diff --git a/intergration/radon-test/r/help.result b/intergration/radon-test/r/help.result
new file mode 100644
index 00000000..d9094048
--- /dev/null
+++ b/intergration/radon-test/r/help.result
@@ -0,0 +1,125 @@
+drop database if exists integrate_test;
+
+create database if not exists integrate_test DEFAULT CHARSET=utf8;
+
+
+help;
+?         (\?) Synonym for `help'.
+clear     (\c) Clear the current input statement.
+connect   (\r) Reconnect to the server. Optional arguments are db and host.
+delimiter (\d) Set statement delimiter.
+edit      (\e) Edit command with $EDITOR.
+ego       (\G) Send command to mysql server, display result vertically.
+exit      (\q) Exit mysql. Same as quit.
+go        (\g) Send command to mysql server.
+help      (\h) Display this help.
+nopager   (\n) Disable pager, print to stdout.
+notee     (\t) Don't write into outfile.
+pager     (\P) Set PAGER [to_pager]. Print the query results via PAGER.
+print     (\p) Print current command.
+prompt    (\R) Change your mysql prompt.
+quit      (\q) Quit mysql.
+rehash    (\#) Rebuild completion hash.
+source    (\.) Execute an SQL script file. Takes a file name as an argument.
+status    (\s) Get status information from the server.
+system    (\!) Execute a system shell command.
+tee       (\T) Set outfile [to_outfile]. Append everything into given outfile.
+use       (\u) Use another database. Takes database name as argument.
+charset   (\C) Switch to another charset. Might be needed for processing binlog with multi-byte charsets.
+warnings  (\W) Show warnings after every statement.
+nowarning (\w) Don't show warnings after every statement.
+resetconnection(\x) Clean session context.
+
+help content;
+
+help 'index';
+   ALTER TABLE
+   CACHE INDEX
+   CREATE INDEX
+   CREATE TABLE
+   DROP INDEX
+   JOIN
+   LOAD INDEX
+   SHOW
+   SHOW INDEX
+   SPATIAL
+
+
+help 'insert';
+Name: 'INSERT'
+Description:
+Syntax:
+INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
+    [INTO] tbl_name
+    [PARTITION (partition_name [, partition_name] ...)]
+    [(col_name [, col_name] ...)]
+    {VALUES | VALUE} (value_list) [, (value_list)] ...
+    [ON DUPLICATE KEY UPDATE assignment_list]
+
+INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
+    [INTO] tbl_name
+    [PARTITION (partition_name [, partition_name] ...)]
+    SET assignment_list
+    [ON DUPLICATE KEY UPDATE assignment_list]
+
+INSERT [LOW_PRIORITY | HIGH_PRIORITY] [IGNORE]
+    [INTO] tbl_name
+    [PARTITION (partition_name [, partition_name] ...)]
+    [(col_name [, col_name] ...)]
+    SELECT ...
+    [ON DUPLICATE KEY UPDATE assignment_list]
+
+value:
+    {expr | DEFAULT}
+
+value_list:
+    value [, value] ...
+
+assignment:
+    col_name = value
+
+assignment_list:
+    assignment [, assignment] ...
+
+INSERT inserts new rows into an existing table. The INSERT ... VALUES
+and INSERT ... SET forms of the statement insert rows based on
+explicitly specified values. The INSERT ... SELECT form inserts rows
+selected from another table or tables. INSERT with an ON DUPLICATE KEY
+UPDATE clause enables existing rows to be updated if a row to be
+inserted would cause a duplicate value in a UNIQUE index or PRIMARY
+KEY.
+
+For additional information about INSERT ... SELECT and INSERT ... ON
+DUPLICATE KEY UPDATE, see [HELP INSERT SELECT], and
+http://dev.mysql.com/doc/refman/5.7/en/insert-on-duplicate.html.
+
+In MySQL 5.7, the DELAYED keyword is accepted but ignored by the
+server. For the reasons for this, see [HELP INSERT DELAYED],
+
+Inserting into a table requires the INSERT privilege for the table. If
+the ON DUPLICATE KEY UPDATE clause is used and a duplicate key causes
+an UPDATE to be performed instead, the statement requires the UPDATE
+privilege for the columns to be updated. For columns that are read but
+not modified you need only the SELECT privilege (such as for a column
+referenced only on the right hand side of an col_name=expr assignment
+in an ON DUPLICATE KEY UPDATE clause).
+
+When inserting into a partitioned table, you can control which
+partitions and subpartitions accept new rows. The PARTITION option
+takes a list of the comma-separated names of one or more partitions or
+subpartitions (or both) of the table. If any of the rows to be inserted
+by a given INSERT statement do not match one of the partitions listed,
+the INSERT statement fails with the error Found a row not matching the
+given partition set. For more information and examples, see
+http://dev.mysql.com/doc/refman/5.7/en/partitioning-selection.html.
+
+URL: http://dev.mysql.com/doc/refman/5.7/en/insert.html
+
+
+
+help /*test nothing get*/ xx;
+
+help /*test nothing get*/ create create;
+
+
+drop database integrate_test;
diff --git a/intergration/radon-test/t/help.test b/intergration/radon-test/t/help.test
new file mode 100644
index 00000000..ad05a444
--- /dev/null
+++ b/intergration/radon-test/t/help.test
@@ -0,0 +1,11 @@
+drop database if exists integrate_test;
+create database if not exists integrate_test DEFAULT CHARSET=utf8;
+
+help;
+help content;
+help 'index';
+help 'insert';
+help /*test nothing get*/ xx;
+help /*test nothing get*/ create create;
+
+drop database integrate_test;
diff --git a/src/proxy/help.go b/src/proxy/help.go
new file mode 100644
index 00000000..0d2f805d
--- /dev/null
+++ b/src/proxy/help.go
@@ -0,0 +1,20 @@
+/*
+ * Radon
+ *
+ * Copyright 2020 The Radon Authors.
+ * Code is licensed under the GPLv3.
+ *
+ */
+
+package proxy
+
+import (
+	"github.com/xelabs/go-mysqlstack/driver"
+	"github.com/xelabs/go-mysqlstack/sqlparser"
+	"github.com/xelabs/go-mysqlstack/sqlparser/depends/sqltypes"
+)
+
+// handleExplain used to handle the EXPLAIN command.
+func (spanner *Spanner) handleHelp(session *driver.Session, query string, node sqlparser.Statement) (*sqltypes.Result, error) {
+	return spanner.ExecuteSingle(query)
+}
diff --git a/src/proxy/help_test.go b/src/proxy/help_test.go
new file mode 100644
index 00000000..da98b02a
--- /dev/null
+++ b/src/proxy/help_test.go
@@ -0,0 +1,48 @@
+/*
+ * Radon
+ *
+ * Copyright 2018 The Radon Authors.
+ * Code is licensed under the GPLv3.
+ *
+ */
+
+package proxy
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/xelabs/go-mysqlstack/driver"
+	"github.com/xelabs/go-mysqlstack/sqlparser/depends/sqltypes"
+	"github.com/xelabs/go-mysqlstack/xlog"
+)
+
+func TestHelpStmt(t *testing.T) {
+	log := xlog.NewStdLog(xlog.Level(xlog.PANIC))
+	fakedbs, proxy, cleanup := MockProxy(log)
+	defer cleanup()
+	address := proxy.Address()
+
+	// fakedbs.
+	{
+		fakedbs.AddQueryPattern("use .*", &sqltypes.Result{})
+		fakedbs.AddQueryPattern("help *.*", &sqltypes.Result{})
+	}
+
+	// show databases.
+	{
+		client, err := driver.NewConn("mock", "mock", address, "test", "utf8")
+		assert.Nil(t, err)
+		defer client.Close()
+		querys := []string{
+			"help",
+			"help index",
+			"help content",
+			"help 'any string'",
+		}
+		for _, query := range querys {
+			_, err = client.FetchAll(query, -1)
+			assert.Nil(t, err)
+		}
+	}
+}
diff --git a/src/proxy/query.go b/src/proxy/query.go
index ea042251..ea6b1399 100644
--- a/src/proxy/query.go
+++ b/src/proxy/query.go
@@ -334,6 +334,13 @@ func (spanner *Spanner) ComQuery(session *driver.Session, query string, bindVari
 		}
 		spanner.auditLog(session, R, xbase.EXPLAIN, query, qr, status)
 		return returnQuery(qr, callback, err)
+	case *sqlparser.Help:
+		if qr, err = spanner.handleHelp(session, query, node); err != nil {
+			log.Error("proxy.help[%s].from.session[%v].error:%+v", query, session.ID(), err)
+			status = 1
+		}
+		spanner.auditLog(session, R, xbase.HELP, query, qr, status)
+		return returnQuery(qr, callback, err)
 	case *sqlparser.Transaction:
 		// Support for myloader.
 		// Support Multiple-statement Transaction
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/ast.go b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/ast.go
index f40c2786..e7001480 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/ast.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/ast.go
@@ -198,6 +198,11 @@ type (
 		Statement Statement
 	}
 
+	// Help represents a help statement.
+	Help struct {
+		HelpInfo *SQLVal
+	}
+
 	// Kill represents a KILL statement.
 	Kill struct {
 		QueryID *NumVal
@@ -230,6 +235,7 @@ func (*OtherRead) iStatement()   {}
 func (*OtherAdmin) iStatement()  {}
 func (*Radon) iStatement()       {}
 func (*Explain) iStatement()     {}
+func (*Help) iStatement()        {}
 func (*Kill) iStatement()        {}
 func (*Transaction) iStatement() {}
 func (*Xa) iStatement()          {}
@@ -1931,6 +1937,14 @@ func (node *Explain) Format(buf *TrackedBuffer) {
 	buf.WriteString("explain")
 }
 
+// Format formats the node.
+func (node *Help) Format(buf *TrackedBuffer) {
+	buf.Myprintf("help")
+	if node.HelpInfo != nil {
+		buf.Myprintf(" %v", node.HelpInfo)
+	}
+}
+
 // Format formats the node.
 func (node *Kill) Format(buf *TrackedBuffer) {
 	buf.Myprintf("kill %s", node.QueryID.raw)
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/parse_test.go b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/parse_test.go
index c7dba454..ed80f8f6 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/parse_test.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/parse_test.go
@@ -731,6 +731,18 @@ func TestValid(t *testing.T) {
 	}, {
 		input:  "explain update t set col = 2",
 		output: "explain",
+	}, {
+		input:  "help",
+		output: "help",
+	}, {
+		input:  "helP Create",
+		output: "help create",
+	}, {
+		input:  "helP 'Create'",
+		output: "help 'Create'",
+	}, {
+		input:  "helP \"Create\"",
+		output: "help 'Create'",
 	}, {
 		input:  "truncate table foo",
 		output: "truncate table foo",
@@ -1266,6 +1278,9 @@ func TestErrors(t *testing.T) {
 	}, {
 		input:  "explain analyze format = json select a from t",
 		output: "syntax error at position 30 near 'json'",
+	}, {
+		input:  "help create create",
+		output: "syntax error at position 19 near 'create'",
 	}, {
 		input:  "select $ from t",
 		output: "syntax error at position 9 near '$'",
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/rewriter.go b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/rewriter.go
index 087dcbf2..eded52d1 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/rewriter.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/rewriter.go
@@ -272,6 +272,10 @@ func replaceGroupConcatExprOrderBy(newNode, parent SQLNode) {
 	parent.(*GroupConcatExpr).OrderBy = newNode.(OrderBy)
 }
 
+func replaceHelpHelpInfo(newNode, parent SQLNode) {
+	parent.(*Help).HelpInfo = newNode.(*SQLVal)
+}
+
 func replaceIndexDefinitionName(newNode, parent SQLNode) {
 	parent.(*IndexDefinition).Name = newNode.(ColIdent)
 }
@@ -839,6 +843,9 @@ func (a *application) apply(parent, node SQLNode, replacer replacerFunc) {
 		a.apply(node, n.Exprs, replaceGroupConcatExprExprs)
 		a.apply(node, n.OrderBy, replaceGroupConcatExprOrderBy)
 
+	case *Help:
+		a.apply(node, n.HelpInfo, replaceHelpHelpInfo)
+
 	case *IndexDefinition:
 		a.apply(node, n.Name, replaceIndexDefinitionName)
 		a.apply(node, n.Opts, replaceIndexDefinitionOpts)
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.go b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.go
index 9501346b..6d5824de 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.go
@@ -233,168 +233,169 @@ const EXPLAIN = 57468
 const SHOW = 57469
 const DATE = 57470
 const ESCAPE = 57471
-const REPAIR = 57472
-const OPTIMIZE = 57473
+const HELP = 57472
+const REPAIR = 57473
 const TRUNCATE = 57474
-const BIT = 57475
-const TINYINT = 57476
-const SMALLINT = 57477
-const MEDIUMINT = 57478
-const INT = 57479
-const INTEGER = 57480
-const BIGINT = 57481
-const INTNUM = 57482
-const REAL = 57483
-const DOUBLE = 57484
-const FLOAT_TYPE = 57485
-const DECIMAL = 57486
-const NUMERIC = 57487
-const TIME = 57488
-const TIMESTAMP = 57489
-const DATETIME = 57490
-const YEAR = 57491
-const CHAR = 57492
-const VARCHAR = 57493
-const BOOL = 57494
-const CHARACTER = 57495
-const VARBINARY = 57496
-const NCHAR = 57497
-const CHARSET = 57498
-const TEXT = 57499
-const TINYTEXT = 57500
-const MEDIUMTEXT = 57501
-const LONGTEXT = 57502
-const BLOB = 57503
-const TINYBLOB = 57504
-const MEDIUMBLOB = 57505
-const LONGBLOB = 57506
-const JSON = 57507
-const ENUM = 57508
-const GEOMETRY = 57509
-const POINT = 57510
-const LINESTRING = 57511
-const POLYGON = 57512
-const GEOMETRYCOLLECTION = 57513
-const MULTIPOINT = 57514
-const MULTILINESTRING = 57515
-const MULTIPOLYGON = 57516
-const NULLX = 57517
-const AUTO_INCREMENT = 57518
-const APPROXNUM = 57519
-const SIGNED = 57520
-const UNSIGNED = 57521
-const ZEROFILL = 57522
-const FIXED = 57523
-const DYNAMIC = 57524
-const STORAGE = 57525
-const DISK = 57526
-const MEMORY = 57527
-const COLUMN_FORMAT = 57528
-const AVG_ROW_LENGTH = 57529
-const COMPRESSION = 57530
-const CONNECTION = 57531
-const DATA = 57532
-const DIRECTORY = 57533
-const DELAY_KEY_WRITE = 57534
-const ENCRYPTION = 57535
-const INSERT_METHOD = 57536
-const MAX_ROWS = 57537
-const MIN_ROWS = 57538
-const PACK_KEYS = 57539
-const PASSWORD = 57540
-const ROW_FORMAT = 57541
-const STATS_AUTO_RECALC = 57542
-const STATS_PERSISTENT = 57543
-const STATS_SAMPLE_PAGES = 57544
-const TABLESPACE = 57545
-const COMPRESSED = 57546
-const REDUNDANT = 57547
-const COMPACT = 57548
-const TOKUDB_DEFAULT = 57549
-const TOKUDB_FAST = 57550
-const TOKUDB_SMALL = 57551
-const TOKUDB_ZLIB = 57552
-const TOKUDB_QUICKLZ = 57553
-const TOKUDB_LZMA = 57554
-const TOKUDB_SNAPPY = 57555
-const TOKUDB_UNCOMPRESSED = 57556
-const COLLATION = 57557
-const DATABASES = 57558
-const TABLES = 57559
-const WARNINGS = 57560
-const VARIABLES = 57561
-const EVENTS = 57562
-const BINLOG = 57563
-const GTID = 57564
-const STATUS = 57565
-const COLUMNS = 57566
-const FIELDS = 57567
-const CURRENT_TIMESTAMP = 57568
-const CURRENT_DATE = 57569
-const DATABASE = 57570
-const SCHEMA = 57571
-const CURRENT_TIME = 57572
-const LOCALTIME = 57573
-const LOCALTIMESTAMP = 57574
-const UTC_DATE = 57575
-const UTC_TIME = 57576
-const UTC_TIMESTAMP = 57577
-const REPLACE = 57578
-const CONVERT = 57579
-const CAST = 57580
-const GROUP_CONCAT = 57581
-const SEPARATOR = 57582
-const MATCH = 57583
-const AGAINST = 57584
-const BOOLEAN = 57585
-const LANGUAGE = 57586
-const WITH = 57587
-const QUERY = 57588
-const EXPANSION = 57589
-const UNUSED = 57590
-const FORMAT = 57591
-const TREE = 57592
-const TRADITIONAL = 57593
-const EXTENDED = 57594
-const PARTITION = 57595
-const PARTITIONS = 57596
-const LIST = 57597
-const XA = 57598
-const DISTRIBUTED = 57599
-const ENGINES = 57600
-const VERSIONS = 57601
-const PROCESSLIST = 57602
-const QUERYZ = 57603
-const TXNZ = 57604
-const KILL = 57605
-const ENGINE = 57606
-const SINGLE = 57607
-const BEGIN = 57608
-const START = 57609
-const TRANSACTION = 57610
-const COMMIT = 57611
-const ROLLBACK = 57612
-const GLOBAL = 57613
-const LOCAL = 57614
-const SESSION = 57615
-const NAMES = 57616
-const ISOLATION = 57617
-const LEVEL = 57618
-const READ = 57619
-const WRITE = 57620
-const ONLY = 57621
-const REPEATABLE = 57622
-const COMMITTED = 57623
-const UNCOMMITTED = 57624
-const SERIALIZABLE = 57625
-const RADON = 57626
-const ATTACH = 57627
-const ATTACHLIST = 57628
-const DETACH = 57629
-const RESHARD = 57630
-const CLEANUP = 57631
-const RECOVER = 57632
-const REBALANCE = 57633
+const OPTIMIZE = 57475
+const BIT = 57476
+const TINYINT = 57477
+const SMALLINT = 57478
+const MEDIUMINT = 57479
+const INT = 57480
+const INTEGER = 57481
+const BIGINT = 57482
+const INTNUM = 57483
+const REAL = 57484
+const DOUBLE = 57485
+const FLOAT_TYPE = 57486
+const DECIMAL = 57487
+const NUMERIC = 57488
+const TIME = 57489
+const TIMESTAMP = 57490
+const DATETIME = 57491
+const YEAR = 57492
+const CHAR = 57493
+const VARCHAR = 57494
+const BOOL = 57495
+const CHARACTER = 57496
+const VARBINARY = 57497
+const NCHAR = 57498
+const CHARSET = 57499
+const TEXT = 57500
+const TINYTEXT = 57501
+const MEDIUMTEXT = 57502
+const LONGTEXT = 57503
+const BLOB = 57504
+const TINYBLOB = 57505
+const MEDIUMBLOB = 57506
+const LONGBLOB = 57507
+const JSON = 57508
+const ENUM = 57509
+const GEOMETRY = 57510
+const POINT = 57511
+const LINESTRING = 57512
+const POLYGON = 57513
+const GEOMETRYCOLLECTION = 57514
+const MULTIPOINT = 57515
+const MULTILINESTRING = 57516
+const MULTIPOLYGON = 57517
+const NULLX = 57518
+const AUTO_INCREMENT = 57519
+const APPROXNUM = 57520
+const SIGNED = 57521
+const UNSIGNED = 57522
+const ZEROFILL = 57523
+const FIXED = 57524
+const DYNAMIC = 57525
+const STORAGE = 57526
+const DISK = 57527
+const MEMORY = 57528
+const COLUMN_FORMAT = 57529
+const AVG_ROW_LENGTH = 57530
+const COMPRESSION = 57531
+const CONNECTION = 57532
+const DATA = 57533
+const DIRECTORY = 57534
+const DELAY_KEY_WRITE = 57535
+const ENCRYPTION = 57536
+const INSERT_METHOD = 57537
+const MAX_ROWS = 57538
+const MIN_ROWS = 57539
+const PACK_KEYS = 57540
+const PASSWORD = 57541
+const ROW_FORMAT = 57542
+const STATS_AUTO_RECALC = 57543
+const STATS_PERSISTENT = 57544
+const STATS_SAMPLE_PAGES = 57545
+const TABLESPACE = 57546
+const COMPRESSED = 57547
+const REDUNDANT = 57548
+const COMPACT = 57549
+const TOKUDB_DEFAULT = 57550
+const TOKUDB_FAST = 57551
+const TOKUDB_SMALL = 57552
+const TOKUDB_ZLIB = 57553
+const TOKUDB_QUICKLZ = 57554
+const TOKUDB_LZMA = 57555
+const TOKUDB_SNAPPY = 57556
+const TOKUDB_UNCOMPRESSED = 57557
+const COLLATION = 57558
+const DATABASES = 57559
+const TABLES = 57560
+const WARNINGS = 57561
+const VARIABLES = 57562
+const EVENTS = 57563
+const BINLOG = 57564
+const GTID = 57565
+const STATUS = 57566
+const COLUMNS = 57567
+const FIELDS = 57568
+const CURRENT_TIMESTAMP = 57569
+const CURRENT_DATE = 57570
+const DATABASE = 57571
+const SCHEMA = 57572
+const CURRENT_TIME = 57573
+const LOCALTIME = 57574
+const LOCALTIMESTAMP = 57575
+const UTC_DATE = 57576
+const UTC_TIME = 57577
+const UTC_TIMESTAMP = 57578
+const REPLACE = 57579
+const CONVERT = 57580
+const CAST = 57581
+const GROUP_CONCAT = 57582
+const SEPARATOR = 57583
+const MATCH = 57584
+const AGAINST = 57585
+const BOOLEAN = 57586
+const LANGUAGE = 57587
+const WITH = 57588
+const QUERY = 57589
+const EXPANSION = 57590
+const UNUSED = 57591
+const FORMAT = 57592
+const TREE = 57593
+const TRADITIONAL = 57594
+const EXTENDED = 57595
+const PARTITION = 57596
+const PARTITIONS = 57597
+const LIST = 57598
+const XA = 57599
+const DISTRIBUTED = 57600
+const ENGINES = 57601
+const VERSIONS = 57602
+const PROCESSLIST = 57603
+const QUERYZ = 57604
+const TXNZ = 57605
+const KILL = 57606
+const ENGINE = 57607
+const SINGLE = 57608
+const BEGIN = 57609
+const START = 57610
+const TRANSACTION = 57611
+const COMMIT = 57612
+const ROLLBACK = 57613
+const GLOBAL = 57614
+const LOCAL = 57615
+const SESSION = 57616
+const NAMES = 57617
+const ISOLATION = 57618
+const LEVEL = 57619
+const READ = 57620
+const WRITE = 57621
+const ONLY = 57622
+const REPEATABLE = 57623
+const COMMITTED = 57624
+const UNCOMMITTED = 57625
+const SERIALIZABLE = 57626
+const RADON = 57627
+const ATTACH = 57628
+const ATTACHLIST = 57629
+const DETACH = 57630
+const RESHARD = 57631
+const CLEANUP = 57632
+const RECOVER = 57633
+const REBALANCE = 57634
 
 var yyToknames = [...]string{
 	"$end",
@@ -543,9 +544,10 @@ var yyToknames = [...]string{
 	"SHOW",
 	"DATE",
 	"ESCAPE",
+	"HELP",
 	"REPAIR",
-	"OPTIMIZE",
 	"TRUNCATE",
+	"OPTIMIZE",
 	"BIT",
 	"TINYINT",
 	"SMALLINT",
@@ -713,7 +715,7 @@ const yyEofCode = 1
 const yyErrCode = 2
 const yyInitialStackSize = 16
 
-//line sql.y:5009
+//line sql.y:5043
 
 //line yacctab:1
 var yyExca = [...]int{
@@ -721,1180 +723,1235 @@ var yyExca = [...]int{
 	1, -1,
 	-2, 0,
 	-1, 3,
-	5, 28,
+	5, 29,
 	-2, 4,
-	-1, 195,
-	6, 355,
-	7, 355,
-	8, 355,
-	9, 355,
-	18, 355,
-	67, 355,
-	253, 355,
-	-2, 882,
-	-1, 238,
-	94, 890,
-	-2, 698,
-	-1, 244,
-	94, 747,
-	-2, 676,
-	-1, 424,
-	5, 28,
-	-2, 347,
-	-1, 503,
-	122, 728,
-	-2, 724,
-	-1, 504,
-	122, 729,
-	-2, 725,
-	-1, 537,
-	119, 89,
-	167, 89,
-	170, 89,
-	173, 89,
-	-2, 101,
-	-1, 588,
-	1, 82,
-	309, 82,
-	-2, 89,
-	-1, 720,
-	5, 28,
-	-2, 647,
-	-1, 749,
-	119, 89,
-	167, 89,
-	170, 89,
-	173, 89,
+	-1, 197,
+	6, 356,
+	7, 356,
+	8, 356,
+	9, 356,
+	18, 356,
+	67, 356,
+	254, 356,
+	-2, 890,
+	-1, 372,
+	94, 898,
+	-2, 705,
+	-1, 378,
+	94, 754,
+	-2, 683,
+	-1, 434,
+	5, 29,
+	-2, 348,
+	-1, 513,
+	122, 735,
+	-2, 731,
+	-1, 514,
+	122, 736,
+	-2, 732,
+	-1, 547,
+	119, 90,
+	168, 90,
+	171, 90,
+	174, 90,
 	-2, 102,
-	-1, 807,
-	35, 309,
-	67, 309,
-	70, 309,
-	133, 309,
-	-2, 887,
-	-1, 860,
+	-1, 598,
 	1, 83,
-	309, 83,
-	-2, 89,
-	-1, 951,
-	122, 731,
-	-2, 727,
-	-1, 1133,
+	310, 83,
+	-2, 90,
+	-1, 728,
 	5, 29,
-	-2, 526,
-	-1, 1157,
+	-2, 654,
+	-1, 757,
+	119, 90,
+	168, 90,
+	171, 90,
+	174, 90,
+	-2, 103,
+	-1, 815,
+	35, 310,
+	67, 310,
+	70, 310,
+	133, 310,
+	-2, 895,
+	-1, 868,
+	1, 84,
+	310, 84,
+	-2, 90,
+	-1, 959,
+	122, 738,
+	-2, 734,
+	-1, 1141,
+	5, 30,
+	-2, 533,
+	-1, 1165,
+	5, 30,
+	-2, 655,
+	-1, 1300,
 	5, 29,
-	-2, 648,
-	-1, 1292,
-	5, 28,
-	-2, 650,
-	-1, 1420,
-	5, 29,
-	-2, 651,
+	-2, 657,
+	-1, 1428,
+	5, 30,
+	-2, 658,
 }
 
 const yyPrivate = 57344
 
-const yyLast = 10818
+const yyLast = 11352
 
 var yyAct = [...]int{
 
-	504, 481, 1493, 1423, 1096, 623, 1324, 1282, 1449, 1353,
-	842, 1455, 457, 980, 1367, 1283, 479, 723, 1323, 1479,
-	1316, 1216, 1055, 239, 214, 981, 1032, 856, 1262, 1364,
-	424, 3, 728, 935, 58, 243, 1004, 1126, 945, 111,
-	942, 111, 950, 1118, 889, 1098, 1097, 836, 1045, 68,
-	724, 977, 961, 1034, 378, 422, 459, 189, 912, 626,
-	605, 1008, 777, 379, 1070, 861, 111, 763, 247, 456,
-	381, 811, 523, 446, 506, 522, 606, 944, 512, 455,
-	213, 1035, 235, 588, 242, 111, 852, 111, 482, 49,
-	750, 521, 234, 391, 223, 232, 210, 442, 443, 57,
-	200, 1166, 202, 203, 444, 211, 212, 997, 525, 111,
-	996, 736, 524, 998, 1167, 1168, 737, 738, 441, 524,
-	201, 525, 1377, 1424, 618, 204, 206, 205, 207, 208,
-	747, 209, 376, 897, 1515, 691, 375, 1478, 49, 25,
-	50, 27, 28, 1492, 374, 199, 1514, 398, 399, 219,
-	373, 407, 408, 409, 1469, 411, 412, 413, 414, 415,
-	416, 417, 788, 25, 50, 27, 28, 1512, 1491, 404,
-	1275, 1100, 1347, 25, 50, 27, 28, 1468, 1457, 798,
-	410, 1048, 396, 780, 886, 423, 1049, 1050, 83, 395,
-	1480, 381, 529, 1018, 1017, 611, 1065, 1099, 835, 1061,
-	55, 29, 198, 1241, 37, 843, 434, 436, 111, 619,
-	620, 107, 400, 106, 1393, 775, 947, 1007, 1342, 402,
-	403, 38, 1340, 1091, 55, 1060, 1090, 1089, 111, 1037,
-	111, 1458, 104, 1218, 55, 247, 1041, 1042, 1043, 392,
-	383, 247, 247, 79, 1044, 477, 478, 62, 428, 1218,
-	509, 242, 508, 1088, 420, 1445, 103, 530, 530, 433,
-	25, 50, 27, 28, 437, 1011, 439, 440, 1010, 784,
-	1444, 1009, 1415, 1417, 64, 65, 66, 67, 1443, 805,
-	49, 49, 31, 32, 33, 1076, 35, 1086, 81, 1497,
-	628, 386, 385, 435, 435, 397, 628, 389, 54, 53,
-	52, 36, 72, 384, 47, 48, 34, 388, 49, 108,
-	73, 88, 86, 77, 843, 85, 1374, 526, 96, 105,
-	1332, 55, 651, 652, 653, 654, 655, 648, 1160, 778,
-	658, 1132, 1130, 1011, 1036, 990, 1010, 670, 671, 1009,
-	779, 781, 782, 783, 1416, 785, 786, 787, 789, 790,
-	791, 792, 793, 794, 795, 796, 797, 1062, 1063, 102,
-	1435, 647, 646, 656, 657, 649, 650, 651, 652, 653,
-	654, 655, 648, 1481, 1467, 658, 786, 804, 746, 679,
-	1058, 1059, 430, 590, 658, 1085, 51, 627, 111, 111,
-	744, 648, 590, 627, 658, 633, 891, 111, 111, 429,
-	75, 76, 636, 1005, 1087, 111, 989, 1048, 635, 634,
-	51, 74, 1049, 1050, 1463, 405, 612, 776, 101, 89,
-	51, 100, 98, 634, 87, 636, 95, 1225, 528, 431,
-	39, 111, 449, 507, 533, 706, 1277, 41, 962, 636,
-	42, 43, 1322, 45, 44, 647, 646, 656, 657, 649,
-	650, 651, 652, 653, 654, 655, 648, 591, 46, 658,
-	514, 90, 99, 93, 94, 97, 615, 1100, 510, 1320,
-	962, 609, 1143, 613, 1457, 599, 610, 1226, 607, 635,
-	634, 1136, 1040, 597, 1100, 55, 1119, 890, 1510, 919,
-	621, 1457, 622, 1099, 625, 915, 636, 635, 634, 629,
-	630, 631, 1194, 917, 918, 916, 1138, 51, 1502, 406,
-	1099, 668, 247, 680, 636, 635, 634, 111, 1436, 1321,
-	1213, 247, 1279, 1425, 75, 76, 382, 1458, 712, 1211,
-	1311, 725, 636, 708, 1312, 726, 707, 242, 1499, 381,
-	1209, 1485, 667, 669, 1458, 1315, 720, 1111, 1112, 1113,
-	1212, 1137, 635, 634, 905, 907, 908, 1314, 1190, 1210,
-	906, 1189, 844, 845, 846, 1056, 1188, 1057, 678, 636,
-	1208, 681, 682, 683, 684, 685, 686, 687, 1185, 690,
-	692, 692, 692, 692, 692, 692, 692, 692, 700, 701,
-	702, 703, 1192, 799, 838, 839, 840, 841, 111, 111,
-	936, 387, 937, 1459, 721, 710, 1180, 111, 111, 638,
-	849, 850, 851, 731, 709, 858, 730, 1179, 1178, 739,
-	801, 1074, 1191, 1073, 745, 1066, 885, 111, 693, 694,
-	695, 696, 697, 698, 699, 649, 650, 651, 652, 653,
-	654, 655, 648, 913, 896, 658, 432, 1396, 1313, 1302,
-	1301, 862, 624, 1193, 1186, 1182, 1181, 1196, 1195, 1172,
-	637, 887, 888, 1103, 445, 1102, 1071, 895, 639, 894,
-	1053, 854, 855, 1511, 1318, 1503, 635, 634, 247, 1448,
-	1197, 1198, 1199, 1200, 1201, 1202, 1203, 1204, 1205, 1206,
-	1207, 247, 1390, 636, 941, 1033, 242, 1243, 914, 624,
-	680, 1317, 1240, 949, 1506, 445, 689, 963, 1386, 1483,
-	1386, 1451, 953, 1446, 445, 951, 1386, 1427, 1386, 1426,
-	1384, 982, 247, 1187, 1263, 1351, 445, 1383, 899, 1386,
-	445, 725, 247, 1124, 445, 726, 979, 999, 986, 1232,
-	1231, 1382, 966, 1228, 1229, 742, 381, 1095, 242, 1265,
-	939, 940, 984, 1228, 1227, 1094, 987, 938, 49, 594,
-	954, 955, 593, 991, 958, 1267, 959, 1271, 592, 1266,
-	681, 1264, 1159, 445, 898, 445, 1269, 390, 965, 969,
-	967, 968, 970, 879, 59, 952, 1268, 471, 470, 472,
-	473, 474, 475, 976, 1093, 1152, 476, 964, 1224, 1270,
-	1272, 538, 537, 25, 729, 978, 993, 988, 983, 1000,
-	49, 994, 878, 1006, 526, 1012, 1013, 1014, 1015, 1016,
-	898, 988, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026,
-	1027, 1028, 1029, 1030, 1031, 1001, 1002, 1439, 1124, 881,
-	1003, 718, 25, 1155, 1351, 719, 1230, 1124, 877, 1067,
-	1068, 902, 903, 1124, 909, 910, 1355, 1358, 1359, 1360,
-	1356, 988, 1357, 1361, 55, 111, 111, 111, 25, 647,
-	646, 656, 657, 649, 650, 651, 652, 653, 654, 655,
-	648, 735, 1039, 658, 1291, 733, 704, 520, 55, 220,
-	1429, 837, 1380, 857, 1046, 874, 872, 868, 624, 871,
-	873, 956, 957, 55, 1308, 1355, 1358, 1359, 1360, 1356,
-	480, 1357, 1361, 1072, 1303, 1440, 78, 69, 913, 1222,
-	853, 507, 848, 862, 1077, 1082, 1075, 1106, 1083, 55,
-	1078, 847, 978, 866, 865, 864, 598, 1408, 23, 876,
-	1406, 1442, 1409, 1101, 716, 1407, 992, 1441, 247, 109,
-	55, 193, 1405, 1107, 1105, 1404, 1504, 1410, 1109, 1359,
-	1360, 1490, 875, 1110, 1128, 224, 225, 901, 1476, 513,
-	975, 974, 111, 914, 1100, 1114, 193, 447, 1099, 1328,
-	1177, 227, 511, 1176, 1069, 534, 49, 518, 798, 1153,
-	863, 600, 1363, 221, 222, 193, 70, 193, 513, 218,
-	1099, 725, 381, 381, 448, 726, 1289, 242, 1220, 1052,
-	1051, 1038, 1500, 1142, 1164, 1489, 1165, 1100, 452, 193,
-	1488, 1123, 1161, 870, 1487, 973, 951, 215, 1399, 1173,
-	82, 1154, 1215, 972, 880, 536, 1306, 1140, 1131, 1162,
-	1305, 535, 216, 1121, 1174, 1175, 1307, 1122, 59, 1398,
-	869, 1350, 1217, 729, 1183, 1184, 602, 229, 1133, 1134,
-	1135, 1219, 1371, 1139, 1054, 1170, 1171, 632, 1145, 61,
-	1146, 1147, 1148, 1149, 656, 657, 649, 650, 651, 652,
-	653, 654, 655, 648, 111, 63, 658, 56, 1156, 1157,
-	1158, 1221, 381, 1, 111, 427, 6, 425, 5, 426,
-	4, 372, 1422, 1223, 860, 1169, 859, 810, 1104, 809,
-	1486, 71, 1477, 1233, 1234, 1108, 1454, 1456, 193, 1461,
-	1433, 1430, 1432, 749, 748, 377, 800, 816, 247, 815,
-	814, 812, 1064, 247, 834, 1319, 1248, 1249, 193, 1242,
-	193, 821, 1239, 1246, 1128, 1247, 1244, 242, 820, 242,
-	1250, 743, 774, 111, 949, 773, 1261, 982, 772, 1251,
-	247, 247, 771, 1256, 1288, 1257, 951, 1274, 1235, 1236,
-	1237, 1273, 1260, 1259, 770, 1276, 1294, 1295, 769, 1144,
-	768, 1290, 1281, 767, 1280, 766, 1296, 765, 764, 1292,
-	1252, 762, 761, 760, 759, 758, 757, 1299, 1300, 756,
-	624, 755, 751, 754, 753, 190, 1163, 1376, 752, 1286,
-	647, 646, 656, 657, 649, 650, 651, 652, 653, 654,
-	655, 648, 819, 817, 658, 813, 543, 541, 1255, 542,
-	228, 540, 545, 544, 539, 1362, 247, 247, 247, 1366,
-	1217, 1287, 1309, 1125, 983, 84, 1092, 1293, 1310, 393,
-	197, 394, 1325, 1325, 1325, 1326, 1327, 1084, 646, 656,
-	657, 649, 650, 651, 652, 653, 654, 655, 648, 1329,
-	1330, 658, 867, 418, 40, 1297, 1298, 80, 666, 971,
-	1047, 240, 995, 734, 732, 231, 230, 985, 111, 111,
-	705, 505, 1397, 982, 1349, 1338, 1141, 688, 193, 193,
-	960, 458, 904, 469, 247, 1372, 466, 193, 604, 247,
-	468, 1335, 1336, 467, 1337, 193, 711, 1339, 680, 1341,
-	1325, 717, 1378, 640, 1373, 1325, 450, 1379, 1414, 1285,
-	1217, 882, 1381, 247, 191, 419, 92, 91, 401, 515,
-	1354, 614, 1352, 1284, 1286, 1151, 601, 1392, 1346, 242,
-	1434, 715, 111, 111, 111, 111, 1261, 818, 26, 1400,
-	1278, 1402, 60, 111, 1345, 1333, 111, 1334, 1401, 111,
-	1403, 1411, 438, 1387, 226, 247, 1365, 14, 1343, 1344,
-	983, 247, 49, 1418, 725, 22, 1375, 247, 726, 1419,
-	15, 1421, 517, 1431, 519, 13, 953, 1325, 12, 1428,
-	30, 10, 9, 1325, 8, 1438, 7, 217, 1286, 1286,
-	1286, 1286, 24, 2, 21, 20, 19, 18, 17, 16,
-	11, 802, 1286, 803, 1304, 0, 0, 193, 1385, 727,
-	247, 1388, 1389, 0, 0, 1453, 1450, 1460, 1464, 0,
-	1287, 1287, 1287, 1287, 1462, 1465, 1325, 0, 1452, 0,
-	1475, 1395, 0, 0, 1365, 0, 0, 0, 0, 0,
-	1482, 0, 0, 0, 0, 0, 0, 0, 0, 1413,
-	0, 0, 0, 247, 247, 247, 1495, 1496, 1420, 672,
-	673, 674, 675, 676, 677, 0, 0, 0, 0, 1494,
-	1494, 1494, 1501, 0, 1484, 0, 1348, 0, 0, 1509,
-	0, 0, 0, 0, 0, 0, 0, 247, 193, 193,
-	0, 0, 0, 0, 0, 1498, 0, 892, 193, 0,
-	1120, 0, 0, 1513, 0, 0, 0, 1447, 0, 0,
-	0, 0, 1472, 1473, 1474, 0, 0, 193, 0, 1466,
-	647, 646, 656, 657, 649, 650, 651, 652, 653, 654,
-	655, 648, 595, 596, 658, 0, 0, 0, 0, 0,
-	0, 603, 0, 0, 0, 0, 0, 0, 0, 608,
-	0, 0, 0, 828, 827, 0, 560, 0, 0, 0,
-	0, 0, 824, 0, 0, 0, 435, 0, 0, 948,
-	614, 0, 0, 948, 948, 0, 0, 948, 1505, 0,
-	1507, 1508, 0, 0, 0, 830, 0, 0, 0, 0,
-	0, 948, 948, 948, 948, 1437, 624, 0, 829, 822,
-	0, 0, 0, 0, 0, 823, 948, 0, 0, 727,
+	514, 1457, 1501, 1431, 1331, 1104, 491, 1463, 631, 1332,
+	731, 467, 1012, 988, 1361, 1375, 1324, 1291, 373, 1290,
+	989, 454, 864, 1487, 1224, 1040, 736, 1372, 1063, 1270,
+	1134, 943, 377, 950, 953, 958, 1126, 850, 897, 1105,
+	113, 1106, 113, 203, 388, 348, 1053, 70, 920, 492,
+	51, 732, 969, 60, 844, 1042, 489, 432, 985, 615,
+	634, 1016, 771, 466, 1078, 389, 785, 869, 113, 469,
+	381, 819, 391, 465, 758, 202, 532, 456, 516, 533,
+	522, 860, 1043, 531, 369, 368, 357, 113, 366, 113,
+	616, 598, 401, 539, 64, 452, 453, 59, 796, 1175,
+	1176, 51, 745, 746, 26, 52, 28, 29, 462, 1174,
+	535, 113, 353, 744, 534, 806, 451, 344, 534, 788,
+	535, 335, 66, 67, 68, 69, 376, 1385, 755, 1005,
+	1432, 952, 1004, 699, 626, 1006, 26, 52, 28, 29,
+	905, 1523, 30, 1486, 1500, 38, 338, 340, 339, 341,
+	342, 783, 343, 1522, 333, 386, 1477, 434, 3, 385,
+	1520, 1499, 39, 1476, 1283, 57, 1355, 384, 1108, 420,
+	894, 1056, 410, 383, 405, 1465, 1057, 1058, 1026, 412,
+	413, 85, 1025, 621, 1069, 414, 1073, 955, 26, 52,
+	28, 29, 843, 391, 1107, 406, 1488, 57, 1249, 1068,
+	433, 851, 1015, 1350, 74, 792, 1348, 1099, 109, 347,
+	108, 332, 75, 1401, 1098, 79, 1097, 1226, 1045, 627,
+	628, 402, 393, 32, 33, 34, 81, 36, 1466, 106,
+	1096, 399, 813, 26, 52, 28, 29, 398, 636, 56,
+	55, 54, 37, 51, 51, 42, 49, 35, 50, 57,
+	110, 1019, 438, 105, 1018, 1226, 1453, 1017, 430, 1423,
+	1425, 1049, 1050, 1051, 1452, 1451, 786, 396, 395, 1052,
+	487, 488, 394, 1084, 88, 1382, 87, 787, 789, 790,
+	791, 83, 793, 794, 795, 797, 798, 799, 800, 801,
+	802, 803, 804, 805, 57, 1443, 655, 654, 664, 665,
+	657, 658, 659, 660, 661, 662, 663, 656, 90, 407,
+	666, 678, 679, 76, 851, 98, 107, 1233, 1340, 415,
+	1168, 1140, 1019, 1044, 1330, 1018, 1138, 1108, 1017, 714,
+	812, 1424, 998, 687, 1465, 635, 440, 1094, 656, 666,
+	636, 666, 113, 1070, 1071, 444, 446, 752, 1505, 641,
+	642, 1328, 53, 1107, 784, 1066, 1067, 104, 644, 899,
+	1013, 1475, 113, 1146, 113, 794, 644, 1234, 1095, 381,
+	997, 622, 40, 643, 642, 381, 381, 754, 538, 43,
+	1489, 441, 44, 45, 53, 47, 46, 1466, 445, 445,
+	644, 1285, 1048, 600, 77, 78, 970, 439, 113, 113,
+	48, 1329, 600, 51, 970, 518, 1151, 113, 113, 643,
+	642, 57, 1471, 416, 601, 113, 103, 91, 524, 102,
+	100, 923, 89, 1518, 97, 376, 644, 77, 78, 927,
+	715, 540, 540, 1056, 1510, 1093, 53, 635, 1057, 1058,
+	392, 113, 1271, 925, 926, 924, 1467, 643, 642, 520,
+	898, 1433, 1323, 536, 1444, 1119, 1120, 1121, 1144, 92,
+	101, 95, 96, 99, 644, 643, 642, 1273, 1322, 543,
+	1519, 1198, 1287, 625, 643, 642, 623, 913, 915, 916,
+	619, 53, 644, 914, 1275, 1319, 1279, 1197, 1274, 1320,
+	1272, 644, 607, 609, 1221, 1277, 659, 660, 661, 662,
+	663, 656, 617, 1108, 666, 1276, 1219, 1064, 1196, 1065,
+	1465, 519, 1193, 675, 677, 1188, 1187, 397, 1278, 1280,
+	1186, 1082, 381, 944, 1220, 945, 1507, 113, 1145, 1107,
+	1081, 381, 1074, 904, 676, 442, 1218, 459, 517, 686,
+	733, 717, 689, 690, 691, 692, 693, 694, 695, 391,
+	698, 700, 700, 700, 700, 700, 700, 700, 700, 708,
+	709, 710, 711, 1466, 716, 664, 665, 657, 658, 659,
+	660, 661, 662, 663, 656, 729, 1217, 666, 720, 680,
+	681, 682, 683, 684, 685, 734, 1493, 376, 1404, 1321,
+	1310, 1309, 1200, 807, 1201, 753, 1194, 1190, 1189, 852,
+	853, 854, 1180, 1111, 1110, 1326, 1216, 718, 113, 113,
+	1079, 846, 847, 848, 849, 1061, 739, 113, 113, 738,
+	866, 747, 1199, 1514, 455, 906, 1511, 857, 858, 859,
+	1456, 809, 1325, 632, 1398, 113, 701, 702, 703, 704,
+	705, 706, 707, 481, 480, 482, 483, 484, 485, 647,
+	688, 1041, 486, 907, 1394, 1491, 921, 893, 1394, 1459,
+	1363, 1366, 1367, 1368, 1364, 870, 1365, 1369, 1454, 455,
+	1448, 1394, 1435, 1394, 1434, 455, 862, 863, 902, 1251,
+	632, 1202, 1248, 728, 1359, 455, 381, 697, 654, 664,
+	665, 657, 658, 659, 660, 661, 662, 663, 656, 381,
+	1195, 666, 1394, 455, 1132, 455, 957, 1240, 1239, 1392,
+	960, 657, 658, 659, 660, 661, 662, 663, 656, 922,
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+	168, 0, 0, 0, 0, 161, 0, 115, 0, 0,
+	0, 141, 0, 145, 148, 149, 0, 0, 0, 0,
+	0, 0, 0, 0, 173, 0, 137, 0, 0, 526,
+	131, 0, 0, 0, 0, 0, 0, 151, 0, 0,
+	169, 154, 0, 114, 119, 150, 0, 166, 135, 181,
+	140, 179, 178, 136, 0, 0, 0, 0, 112, 0,
+	0, 0, 0, 0, 0, 134, 171, 121, 172, 0,
+	0, 0, 144, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 184, 185, 187, 186, 188,
+	120, 189, 190, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	180, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 123, 0, 165, 0, 178, 115, 0, 0, 0,
-	0, 0, 0, 0, 0, 128, 137, 0, 0, 174,
-	175, 124, 181, 0, 0, 116, 0, 0, 158, 0,
-	173, 0, 0, 0, 0, 0, 0, 0, 145, 131,
-	140, 162, 150, 163, 141, 156, 155, 157, 0, 0,
-	0, 168, 0, 0, 136, 130, 172, 127, 153, 120,
-	114, 0, 121, 122, 126, 125, 0, 144, 151, 154,
-	160, 161, 166, 0, 159, 0, 113, 0, 0, 0,
-	139, 0, 143, 146, 147, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 171, 0, 135, 129,
-	0, 0, 0, 0, 0, 0, 149, 0, 0, 167,
-	152, 0, 0, 0, 0, 112, 117, 148, 0, 164,
-	133, 179, 138, 177, 176, 134, 0, 380, 0, 0,
-	0, 0, 0, 0, 0, 0, 119, 132, 169, 0,
-	170, 0, 0, 0, 142, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 182, 183, 185,
-	184, 186, 118, 187, 188, 0, 0, 0, 0, 0,
+	0, 0, 182, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 125, 0, 0, 167, 180, 0, 117,
+	0, 0, 0, 0, 0, 0, 0, 0, 130, 139,
+	0, 0, 176, 177, 126, 183, 0, 0, 118, 0,
+	0, 160, 0, 175, 0, 0, 0, 0, 0, 0,
+	0, 147, 133, 142, 164, 152, 165, 143, 158, 157,
+	159, 0, 0, 0, 170, 0, 0, 138, 132, 174,
+	129, 155, 122, 116, 0, 123, 124, 128, 127, 0,
+	146, 153, 156, 162, 163, 168, 0, 161, 0, 115,
+	0, 0, 0, 141, 0, 145, 148, 149, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 173,
+	0, 137, 131, 0, 0, 0, 0, 0, 0, 151,
+	0, 0, 169, 154, 0, 0, 0, 0, 114, 119,
+	150, 0, 166, 135, 181, 140, 179, 178, 136, 0,
+	390, 0, 431, 0, 0, 0, 0, 0, 0, 121,
+	134, 171, 0, 172, 0, 0, 0, 144, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	184, 185, 187, 186, 188, 120, 189, 190, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 180, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 123, 0, 165, 0, 178, 115, 0, 0,
-	0, 0, 0, 0, 0, 0, 128, 137, 0, 0,
-	174, 175, 124, 181, 0, 0, 116, 0, 0, 158,
-	0, 173, 0, 0, 0, 0, 0, 0, 0, 145,
-	131, 140, 162, 150, 163, 141, 156, 155, 157, 0,
-	0, 0, 168, 0, 0, 136, 130, 172, 127, 153,
-	120, 114, 0, 121, 122, 126, 125, 0, 144, 151,
-	154, 160, 161, 166, 0, 159, 0, 113, 0, 0,
-	0, 139, 0, 143, 146, 147, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 171, 0, 135,
-	129, 0, 0, 0, 0, 0, 0, 149, 0, 0,
-	167, 152, 0, 0, 0, 0, 112, 117, 148, 0,
-	164, 133, 179, 138, 177, 176, 134, 0, 1214, 0,
-	0, 0, 0, 0, 0, 0, 0, 119, 132, 169,
-	0, 170, 0, 0, 0, 142, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 182, 183,
-	185, 184, 186, 118, 187, 188, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 182, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 125, 0, 0, 167, 180,
+	0, 117, 0, 0, 0, 0, 0, 0, 0, 0,
+	130, 139, 0, 0, 176, 177, 126, 183, 0, 0,
+	118, 0, 0, 160, 0, 175, 0, 0, 0, 0,
+	0, 0, 0, 147, 133, 142, 164, 152, 165, 143,
+	158, 157, 159, 0, 0, 0, 170, 0, 0, 138,
+	132, 174, 129, 155, 122, 116, 0, 123, 124, 128,
+	127, 0, 146, 153, 156, 162, 163, 168, 0, 161,
+	0, 115, 0, 0, 0, 141, 0, 145, 148, 149,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 173, 0, 137, 131, 0, 0, 0, 0, 0,
+	0, 151, 0, 0, 169, 154, 0, 0, 0, 0,
+	114, 119, 150, 0, 166, 135, 181, 140, 179, 178,
+	136, 0, 380, 0, 0, 0, 0, 0, 0, 0,
+	0, 121, 134, 171, 0, 172, 0, 0, 0, 144,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 184, 185, 187, 186, 188, 120, 189, 190,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 180, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 123, 0, 165, 0, 178, 115, 0,
-	0, 0, 0, 0, 0, 0, 0, 128, 137, 0,
-	0, 174, 175, 124, 181, 0, 0, 116, 0, 0,
-	158, 0, 173, 0, 0, 0, 0, 0, 0, 0,
-	145, 131, 140, 162, 150, 163, 141, 156, 155, 157,
-	0, 0, 0, 168, 0, 0, 136, 130, 172, 127,
-	153, 120, 114, 0, 121, 122, 126, 125, 0, 144,
-	151, 154, 160, 161, 166, 0, 159, 0, 113, 0,
-	0, 0, 139, 0, 143, 146, 147, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 171, 0,
-	135, 129, 0, 0, 0, 0, 0, 0, 149, 0,
-	0, 167, 152, 0, 0, 0, 0, 112, 117, 148,
-	0, 164, 133, 179, 138, 177, 176, 134, 0, 589,
-	0, 0, 0, 0, 0, 0, 0, 0, 119, 132,
-	169, 0, 170, 0, 0, 0, 142, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 182,
-	183, 185, 184, 186, 118, 187, 188, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 182, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 125, 0, 0,
+	167, 180, 0, 117, 0, 0, 0, 0, 0, 0,
+	0, 0, 130, 139, 0, 0, 176, 177, 126, 183,
+	0, 0, 118, 0, 0, 160, 0, 175, 0, 0,
+	0, 0, 0, 0, 0, 147, 133, 142, 164, 152,
+	165, 143, 158, 157, 159, 0, 0, 0, 170, 0,
+	0, 138, 132, 174, 129, 155, 122, 116, 0, 123,
+	124, 128, 127, 0, 146, 153, 156, 162, 163, 168,
+	0, 161, 0, 115, 0, 0, 0, 141, 0, 145,
+	148, 149, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 173, 0, 137, 131, 0, 0, 0,
+	0, 0, 0, 151, 0, 0, 169, 154, 0, 0,
+	0, 0, 114, 119, 150, 0, 166, 135, 181, 140,
+	179, 178, 136, 0, 513, 0, 0, 0, 0, 0,
+	0, 0, 0, 121, 134, 171, 0, 172, 0, 0,
+	0, 144, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 184, 185, 187, 186, 188, 120,
+	189, 190, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 180, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 123, 0, 165, 0, 178, 115,
-	0, 0, 0, 0, 0, 0, 0, 0, 128, 137,
-	0, 0, 174, 175, 124, 181, 0, 0, 116, 0,
-	0, 158, 0, 173, 0, 0, 0, 0, 0, 0,
-	0, 145, 131, 140, 162, 150, 163, 141, 156, 155,
-	157, 0, 0, 0, 168, 0, 0, 136, 130, 172,
-	127, 153, 120, 114, 0, 121, 122, 126, 125, 0,
-	144, 151, 154, 160, 161, 166, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 182, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 125,
+	0, 0, 167, 180, 0, 117, 0, 0, 0, 0,
+	0, 0, 0, 0, 130, 139, 0, 0, 176, 177,
+	126, 183, 0, 0, 118, 0, 0, 160, 0, 175,
+	0, 0, 0, 0, 0, 0, 0, 147, 133, 142,
+	164, 152, 165, 143, 158, 157, 159, 0, 0, 0,
+	170, 0, 0, 138, 132, 174, 129, 155, 122, 116,
+	0, 123, 124, 128, 127, 0, 146, 153, 156, 162,
+	163, 168, 0, 161, 0, 115, 0, 0, 0, 141,
+	0, 145, 148, 149, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 173, 0, 137, 131, 0,
+	0, 0, 0, 0, 0, 151, 0, 0, 169, 154,
+	0, 0, 0, 0, 114, 119, 150, 0, 166, 135,
+	181, 140, 179, 178, 136, 0, 112, 0, 0, 0,
+	0, 0, 0, 0, 0, 121, 134, 171, 0, 172,
+	0, 0, 0, 144, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 184, 185, 187, 186,
+	188, 120, 189, 190, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 171,
-	0, 135, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 112, 117,
-	148, 0, 164, 133, 179, 138, 177, 176, 134, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	132, 169, 0, 170, 0, 0, 0, 142, 0, 0,
+	182, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 125, 0, 0, 167, 180, 0, 117, 0, 0,
+	0, 0, 0, 0, 0, 0, 130, 139, 0, 0,
+	176, 177, 126, 183, 0, 0, 118, 0, 0, 160,
+	0, 175, 0, 0, 0, 0, 0, 0, 0, 147,
+	133, 142, 164, 152, 165, 143, 158, 157, 159, 0,
+	0, 0, 170, 0, 0, 138, 132, 174, 129, 155,
+	122, 116, 0, 123, 124, 128, 127, 0, 146, 153,
+	156, 162, 163, 168, 0, 161, 0, 115, 0, 0,
+	0, 141, 0, 145, 148, 149, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 173, 0, 137,
+	131, 0, 0, 0, 0, 0, 0, 151, 0, 0,
+	169, 154, 0, 0, 0, 0, 114, 119, 150, 0,
+	166, 135, 181, 140, 179, 178, 136, 0, 390, 0,
+	0, 0, 0, 0, 0, 0, 0, 121, 134, 171,
+	0, 172, 0, 0, 0, 144, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 184, 185,
+	187, 186, 188, 120, 189, 190, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	182, 183, 185, 184, 186, 118, 187, 188,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 182, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 125, 0, 0, 167, 180, 0, 117,
+	0, 0, 0, 0, 0, 0, 0, 0, 130, 139,
+	0, 0, 176, 177, 126, 183, 0, 0, 118, 0,
+	0, 160, 0, 175, 0, 0, 0, 0, 0, 0,
+	0, 147, 133, 142, 164, 152, 165, 143, 158, 157,
+	159, 0, 0, 0, 170, 0, 0, 138, 132, 174,
+	129, 155, 122, 116, 0, 123, 124, 128, 127, 0,
+	146, 153, 156, 162, 163, 168, 0, 161, 0, 115,
+	0, 0, 0, 141, 0, 145, 148, 149, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 173,
+	0, 137, 131, 0, 0, 0, 0, 0, 0, 151,
+	0, 0, 169, 154, 0, 0, 0, 0, 114, 119,
+	150, 0, 166, 135, 181, 140, 179, 178, 136, 0,
+	1222, 0, 0, 0, 0, 0, 0, 0, 0, 121,
+	134, 171, 0, 172, 0, 0, 0, 144, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	184, 185, 187, 186, 188, 120, 189, 190, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 182, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 125, 0, 0, 167, 180,
+	0, 117, 0, 0, 0, 0, 0, 0, 0, 0,
+	130, 139, 0, 0, 176, 177, 126, 183, 0, 0,
+	118, 0, 0, 160, 0, 175, 0, 0, 0, 0,
+	0, 0, 0, 147, 133, 142, 164, 152, 165, 143,
+	158, 157, 159, 0, 0, 0, 170, 0, 0, 138,
+	132, 174, 129, 155, 122, 116, 0, 123, 124, 128,
+	127, 0, 146, 153, 156, 162, 163, 168, 0, 161,
+	0, 115, 0, 0, 0, 141, 0, 145, 148, 149,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 173, 0, 137, 131, 0, 0, 0, 0, 0,
+	0, 151, 0, 0, 169, 154, 0, 0, 0, 0,
+	114, 119, 150, 0, 166, 135, 181, 140, 179, 178,
+	136, 0, 599, 0, 0, 0, 0, 0, 0, 0,
+	0, 121, 134, 171, 0, 172, 0, 0, 0, 144,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 184, 185, 187, 186, 188, 120, 189, 190,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 182, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 125, 0, 0,
+	167, 180, 0, 117, 0, 0, 0, 0, 0, 0,
+	0, 0, 130, 139, 0, 0, 176, 177, 126, 183,
+	0, 0, 118, 0, 0, 160, 0, 175, 0, 0,
+	0, 0, 0, 0, 0, 147, 133, 142, 164, 152,
+	165, 143, 158, 157, 159, 0, 0, 0, 170, 0,
+	0, 138, 132, 174, 129, 155, 122, 116, 0, 123,
+	124, 128, 127, 0, 146, 153, 156, 162, 163, 168,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 173, 0, 137, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 114, 119, 150, 0, 166, 135, 181, 140,
+	179, 178, 136, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 134, 171, 0, 172, 0, 0,
+	0, 144, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 184, 185, 187, 186, 188, 120,
+	189, 190,
 }
 var yyPact = [...]int{
 
-	157, -1000, -210, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	98, -1000, -213, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 1006, 1049, -1000, -1000, -1000, -1000,
+	-1000, 827, 181, 90, 148, 144, 142, 183, 118, 10436,
+	-1000, 8811, 4310, -53, -1000, -165, -1000, -1000, -157, -1000,
+	-1000, 792, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	988, 1004, 852, 941, 886, -1000, 90, 10436, 1037, 2480,
+	-116, 10638, 85, 139, 135, 134, 85, -1000, -1000, -1000,
+	105, -1000, 99, 681, 84, -1000, 10436, -1000, 10436, -64,
+	63, -1000, -1000, -63, 309, -1000, -1000, -1000, -72, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 1034, 1064, -1000, -1000, -1000, -1000, -1000,
-	850, 279, 107, 155, 183, 180, 186, 177, 9906, -1000,
-	8289, -61, -1000, -165, -1000, -1000, -177, -1000, -1000, 862,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 1011, 1027,
-	883, 957, 911, -1000, 107, 9906, 1047, 2286, -138, 10107,
-	103, 170, 159, 158, 103, -1000, -1000, -1000, 175, -1000,
-	165, 707, 102, -1000, 9906, -1000, 9906, -48, 50, -1000,
-	-1000, -22, 405, -1000, -1000, -1000, -60, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 9906, -1000,
+	10436, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
@@ -1902,13 +1959,8 @@ var yyPact = [...]int{
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, 9830, 182, 130, 214, 287, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	9303, 167, 133, 260, 335, -1000, -1000, 573, -1000, -1000,
-	-1000, -1000, -1000, -1000, 821, 821, -1000, 9906, -1000, -1000,
-	-189, -1000, -1000, 595, 959, 6068, 6068, 1034, -1000, 862,
-	-1000, -1000, -1000, 932, -1000, -1000, 382, 9102, 943, 9906,
-	819, -1000, -1000, -173, 2894, -1000, -1000, -1000, -1000, 334,
-	8088, 8088, -1000, -1000, -1000, 941, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
@@ -1921,238 +1973,235 @@ var yyPact = [...]int{
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 1026, 1020, 733, -1000, 1532,
-	-1000, -1000, 10509, 371, 698, 692, 689, 9906, 9906, 102,
-	870, 10509, 952, -1000, -1000, 1046, 9906, 9906, -1000, -1000,
-	405, 405, -1000, -1000, 9906, -1000, -1000, -1000, -1000, -1000,
-	405, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -11, -1000, -1000, -1000, -1000, -1000, 322,
-	4718, -58, -1000, -1000, -1000, 6068, -1000, -1000, 258, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 1059, 291, 592,
-	-1000, 6068, 1699, 821, 821, -1000, -1000, 214, -1000, -1000,
-	6336, 6336, 6336, 6336, 6336, 6336, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 821,
-	257, -1000, 5798, 821, 821, 821, 821, 821, 821, 6068,
-	821, 821, 821, 821, 821, 821, 821, 821, 821, 821,
-	821, 821, 821, -1000, -1000, 818, -1000, 395, 1011, 595,
-	911, 7887, 887, -1000, -1000, 797, 9906, -1000, 9705, 1042,
-	2590, -1000, 817, 813, -182, -179, -1000, -173, 4988, -1000,
-	-1000, -1000, -1000, 271, -1000, 821, 106, 136, 7077, 1539,
-	2, -1000, -1000, -1000, 824, -1000, 824, 824, 824, 824,
-	35, 35, 35, 35, -1000, -1000, -1000, -1000, -1000, 864,
-	855, -1000, 824, 824, 824, -1000, -1000, -1000, -1000, -1000,
+	-1000, 462, -1000, -1000, -1000, -1000, -1000, -1000, 804, 804,
+	-1000, 10436, -1000, -1000, -192, -1000, -1000, 606, 931, 6853,
+	6853, 1006, -1000, 792, -1000, -1000, -1000, 907, -1000, -1000,
+	340, 9628, 915, 10436, 781, -1000, -1000, -175, 3090, -1000,
+	-1000, -1000, -1000, 284, 8609, 8609, -1000, -1000, -1000, 914,
+	-1000, -1000, -1000, -1000, -1000, 1003, 1001, 713, -1000, 1486,
+	-1000, -1000, 11042, 328, 680, 679, 678, 10436, 10436, 84,
+	845, 11042, 930, -1000, -1000, 1034, 10436, 10436, -1000, -1000,
+	309, 309, -1000, -1000, 10436, -1000, -1000, -1000, -1000, -1000,
+	309, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -24, -1000, -1000, -1000, -1000, -1000, 277,
+	5225, -49, -1000, -1000, -1000, 6853, -1000, -1000, 200, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 1044, 245, 808,
+	-1000, 6853, 1685, 804, 804, -1000, -1000, 188, -1000, -1000,
+	7122, 7122, 7122, 7122, 7122, 7122, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 804,
+	211, -1000, 6582, 804, 804, 804, 804, 804, 804, 6853,
+	804, 804, 804, 804, 804, 804, 804, 804, 804, 804,
+	804, 804, 804, -1000, -1000, 780, -1000, 289, 988, 606,
+	886, 8407, 867, -1000, -1000, 835, 10436, -1000, 10234, 1031,
+	2785, -1000, 776, 771, -181, -194, -1000, -175, 5769, -1000,
+	-1000, -1000, -1000, 228, -1000, 804, 104, 72, 7593, 1647,
+	-5, -1000, -1000, -1000, 815, -1000, 815, 815, 815, 815,
+	30, 30, 30, 30, -1000, -1000, -1000, -1000, -1000, 832,
+	831, -1000, 815, 815, 815, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 853, 853, 853, 826, 826, 945, -1000,
-	-1000, 951, 869, 868, 867, -1000, 769, 9906, 9906, -1000,
-	-1000, 1011, -55, -1000, -1000, 385, 9906, 9906, 405, -1000,
-	-1000, 571, -134, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 706, 324, -1000, 9906, -1000, -1000, -1000,
-	-1000, -1000, -1000, 915, 6068, 6068, 474, 6068, 6068, 301,
-	6336, 418, 401, 6336, 6336, 6336, 6336, 6336, 6336, 6336,
-	6336, 6336, 6336, 6336, 6336, 6336, 6336, 6336, 530, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 687, -1000, 862,
-	716, 716, 265, 265, 265, 265, 265, 6604, 1902, 4414,
-	595, 5798, 5258, 5258, 6068, 6068, 5258, 961, 348, 324,
-	9504, -1000, 595, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	5258, 5258, 5258, 5258, 6068, -1000, -1000, -1000, 959, -1000,
-	961, 1015, -1000, 923, 922, 5258, -1000, 866, 9705, 821,
-	-1000, 7686, -1000, 793, -1000, 312, -1000, 213, 1034, 6068,
-	-1000, 3806, -1000, -186, -1000, -180, -187, -1000, -1000, -1000,
-	-1000, -1000, 324, -1000, 667, 10107, 821, 821, -1000, 136,
+	-1000, -1000, -1000, 830, 830, 830, 821, 821, 917, -1000,
+	-1000, 912, 842, 841, 840, -1000, 896, 10436, 10436, -1000,
+	-1000, 988, -70, -1000, -1000, 348, 10436, 10436, 309, -1000,
+	-1000, 460, -128, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 677, 363, -1000, 10436, -1000, -1000, -1000, -1000, -1000,
+	-1000, 871, 6853, 6853, 397, 6853, 6853, 257, 7122, 344,
+	341, 7122, 7122, 7122, 7122, 7122, 7122, 7122, 7122, 7122,
+	7122, 7122, 7122, 7122, 7122, 7122, 453, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, 666, -1000, 792, 572, 572,
+	220, 220, 220, 220, 220, 7391, 5498, 4920, 606, 6582,
+	6040, 6040, 6853, 6853, 6040, 942, 306, 363, 10032, -1000,
+	606, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 6040, 6040,
+	6040, 6040, 6853, -1000, -1000, -1000, 931, -1000, 942, 1023,
+	-1000, 897, 895, 6040, -1000, 839, 10234, 804, -1000, 8205,
+	-1000, 777, -1000, 276, -1000, 210, 1006, 6853, -1000, 4005,
+	-1000, -185, -1000, -179, -166, -1000, -1000, -1000, -1000, -1000,
+	363, -1000, 665, 10638, 804, 804, -1000, 72, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 309, 309, 98, 309, 309,
-	309, 309, 309, -14, -15, 309, 309, 309, 309, 309,
-	309, 309, 309, 309, 309, 309, 309, 309, -1000, -1000,
-	-1000, 625, 244, 195, -1000, -1000, -1000, -1000, 979, -1000,
-	1539, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 402, 164, -1000, 975, -1000, 974, 598,
-	1056, 495, 182, 156, -1, -1000, -1000, 552, 35, 35,
-	-1000, -1000, -1000, 940, -1000, -1000, -1000, 594, 594, -1000,
-	-1000, -1000, -1000, 550, -1000, -1000, -1000, 548, -1000, -1000,
-	945, -1000, 166, -1000, 9906, 9906, 9906, -1000, 252, 310,
-	118, 87, 86, 83, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, 726, -1000, 955, -1000, 593, -1000, -1000, -1000,
-	591, 6068, -1000, 405, 1042, -1000, -1000, 254, 6068, -1000,
-	-1000, 910, 301, 338, -1000, -1000, 467, -1000, -1000, 324,
-	324, 764, -1000, -1000, -1000, -1000, 418, 6336, 6336, 6336,
-	340, 764, 1435, 967, 1152, 265, 211, 211, 275, 275,
-	275, 275, 275, 526, 526, -1000, -1000, -1000, 595, -1000,
-	-1000, -1000, 595, 5258, 779, -1000, -1000, 6876, 210, 821,
-	209, -1000, -1000, 595, 665, 665, 413, 468, 665, 5258,
-	380, -1000, 6068, 595, -1000, 665, 595, 665, 665, -1000,
-	-1000, 9906, -1000, -1000, -1000, -1000, 785, -1000, 947, 739,
-	775, -1000, -1000, 5528, 595, 704, 206, 1034, 9705, 6068,
-	4414, 1011, 324, -1000, -1000, -1000, -193, -184, -1000, -1000,
-	595, 10107, 10107, -1000, 587, -1000, 495, 309, 309, -1000,
-	939, 936, 545, 544, 533, 584, 583, 309, 309, 505,
-	582, 653, 493, 488, 485, 549, 581, 459, 497, 486,
-	477, 10308, 95, -1000, 625, -1000, 973, 244, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 852, -1000, -1000,
-	-1000, -1000, -1000, -1000, -62, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, 729, -1000, -1000, 357,
-	685, -1000, 675, 778, 671, -1000, 309, 309, -1000, 821,
-	821, 821, -1000, 9906, -1000, -1000, -1000, 632, 33, 850,
-	627, 10107, -1000, 9906, -1000, -1000, -1000, 998, 933, 309,
-	309, -1000, -1000, -1000, 324, 385, -1000, -1000, 324, -1000,
-	-1000, -1000, -1000, -1000, -1000, 340, 764, 1105, -1000, 6336,
-	6336, -1000, -1000, 665, 5258, -1000, -1000, 8898, -1000, -1000,
-	3502, 5258, 4110, -1000, -1000, -1000, 604, 530, 604, -89,
-	770, 343, -1000, 6068, 431, -1000, -1000, -1000, -1000, -1000,
-	-1000, 1042, 8697, 971, -1000, 821, -1000, -1000, 836, 9504,
-	9504, 1011, -1000, 324, -1000, -1000, -1000, -1000, -1000, -1000,
-	595, 595, -1000, -1000, 495, 495, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 578, 577, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 266, 266, 83, 266, 266, 266, 266,
+	266, -27, -31, 266, 266, 266, 266, 266, 266, 266,
+	266, 266, 266, 266, 266, 266, -1000, -1000, -1000, 581,
+	197, 184, -1000, -1000, -1000, -1000, 959, -1000, 1647, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 312, 189, -1000, 952, -1000, 951, 543, 1043, 437,
+	156, 141, -12, -1000, -1000, 459, 30, 30, -1000, -1000,
+	-1000, 910, -1000, -1000, -1000, 538, 538, -1000, -1000, -1000,
+	-1000, 457, -1000, -1000, -1000, 448, -1000, -1000, 917, -1000,
+	154, -1000, 10436, 10436, 10436, -1000, 302, 274, 95, 76,
+	74, 67, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	712, -1000, 929, -1000, 532, -1000, -1000, -1000, 531, 6853,
+	-1000, 309, 1031, -1000, -1000, 227, 6853, -1000, -1000, 885,
+	257, 265, -1000, -1000, 375, -1000, -1000, 363, 363, 1629,
+	-1000, -1000, -1000, -1000, 344, 7122, 7122, 7122, 1153, 1629,
+	1595, 458, 582, 220, 385, 385, 222, 222, 222, 222,
+	222, 602, 602, -1000, -1000, -1000, 606, -1000, -1000, -1000,
+	606, 6040, 760, -1000, -1000, 2018, 204, 804, 199, -1000,
+	-1000, 606, 636, 636, 390, 325, 636, 6040, 314, -1000,
+	6853, 606, -1000, 636, 606, 636, 636, -1000, -1000, 10436,
+	-1000, -1000, -1000, -1000, 768, -1000, 920, 721, 724, -1000,
+	-1000, 6311, 606, 663, 198, 1006, 10234, 6853, 4920, 988,
+	363, -1000, -1000, -1000, -186, -200, -1000, -1000, 606, 10638,
+	10638, -1000, 530, -1000, 437, 266, 266, -1000, 909, 908,
+	447, 443, 442, 526, 525, 266, 266, 439, 524, 630,
+	435, 414, 398, 549, 522, 638, 533, 463, 451, 10840,
+	79, -1000, 581, -1000, 947, 197, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, 828, -1000, -1000, -1000, -1000,
+	-1000, -1000, -73, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 690, -1000, -1000, 247, 660, -1000,
+	655, 727, 639, -1000, 266, 266, -1000, 804, 804, 804,
+	-1000, 10436, -1000, -1000, -1000, 612, 27, 827, 609, 10638,
+	-1000, 10436, -1000, -1000, -1000, 983, 902, 266, 266, -1000,
+	-1000, -1000, 363, 348, -1000, -1000, 363, -1000, -1000, -1000,
+	-1000, -1000, -1000, 1153, 1629, 1513, -1000, 7122, 7122, -1000,
+	-1000, 636, 6040, -1000, -1000, 9423, -1000, -1000, 3700, 6040,
+	4615, -1000, -1000, -1000, 322, 453, 322, -96, 761, 298,
+	-1000, 6853, 381, -1000, -1000, -1000, -1000, -1000, -1000, 1031,
+	9221, 946, -1000, 804, -1000, -1000, 779, 10032, 10032, 988,
+	-1000, 363, -1000, -1000, -1000, -1000, -1000, -1000, 606, 606,
+	-1000, -1000, 437, 437, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 519, 518, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, -1000, 847, -1000, 1016, 837,
-	95, 625, 461, -1000, -1000, -1000, -1000, -1000, 576, -1000,
-	484, -1000, 472, 631, 399, 9504, 9504, 9504, -1000, -1000,
-	-1000, 935, -1000, -1000, -1000, -1000, -1000, -1000, 631, 631,
-	-1000, -1000, 6336, 764, 764, -1000, -1000, -1000, -1000, 198,
-	595, -1000, 595, 824, 824, -1000, 824, 826, -1000, 824,
-	67, 824, 63, 595, 595, 821, -85, -1000, 324, 6068,
-	1039, 776, 800, -1000, -1000, -1000, 954, 7281, 7482, 1054,
-	-1000, 821, -1000, 862, 194, -1000, -1000, 821, -149, -1000,
-	-1000, -1000, -1000, 9504, -1000, -1000, -1000, -1000, 9504, 825,
-	95, -1000, 672, -1000, 658, 651, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, 661, -1000, 824, 661, 661, 622, -1000,
-	-1000, 764, 3198, -1000, -1000, -1000, 144, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, -1000, 6336, 595, 575, 324, 1036,
-	1013, 8697, 8697, 8697, 8697, -1000, 899, 896, -1000, 884,
-	881, 901, 9906, -1000, 657, 7281, 208, -1000, 8493, -1000,
-	-1000, 9705, 775, 595, 9504, -147, -1000, 450, 650, 648,
-	9504, 823, -1000, -1000, -1000, -1000, 9504, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, 256, -1000, -1000, -1000, 6068, 6068,
-	800, 771, 849, -1000, -1000, -1000, -1000, 891, -1000, 885,
-	-1000, -1000, -1000, -1000, -1000, 145, 137, 122, -1000, 753,
-	-1000, -1000, 645, -1000, 609, -1000, -1000, -1000, 642, 9504,
-	465, -1000, 152, 448, 595, 114, -109, 324, 752, 6068,
-	6068, -1000, -1000, 821, 821, 821, -147, -1000, 920, 111,
-	111, -1000, 640, -1000, -1000, -1000, -1000, 309, 469, 1000,
-	-1000, -1000, -1000, 987, -1000, -1000, -1000, 908, -93, -121,
-	324, 324, 9504, 9504, 9504, -1000, 185, -1000, 309, -1000,
-	466, 984, 111, -1000, 435, -1000, -1000, -1000, -1000, 605,
-	-1000, 903, -1000, 636, -1000, 636, 636, 821, 415, -1000,
-	603, 111, -1000, -1000, -95, -1000, 9504, -1000, -1000, -1000,
-	-1000, -1000, -117, -1000, -130, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, 824, -1000, 979, 822, 79, 581,
+	416, -1000, -1000, -1000, -1000, -1000, 517, -1000, 395, -1000,
+	379, 562, 281, 10032, 10032, 10032, -1000, -1000, -1000, 906,
+	-1000, -1000, -1000, -1000, -1000, -1000, 562, 562, -1000, -1000,
+	7122, 1629, 1629, -1000, -1000, -1000, -1000, 196, 606, -1000,
+	606, 815, 815, -1000, 815, 821, -1000, 815, 50, 815,
+	47, 606, 606, 804, -92, -1000, 363, 6853, 1025, 725,
+	794, -1000, -1000, -1000, 933, 7798, 8000, 1042, -1000, 804,
+	-1000, 792, 153, -1000, -1000, 804, -145, -1000, -1000, -1000,
+	-1000, 10032, -1000, -1000, -1000, -1000, 10032, 819, 79, -1000,
+	687, -1000, 656, 640, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, 634, -1000, 815, 634, 634, 564, -1000, -1000, 1629,
+	3395, -1000, -1000, -1000, 143, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, 7122, 606, 516, 363, 1019, 991, 9221,
+	9221, 9221, 9221, -1000, 872, 870, -1000, 866, 856, 857,
+	10436, -1000, 616, 7798, 195, -1000, 9016, -1000, -1000, 10234,
+	724, 606, 10032, -141, -1000, 378, 605, 603, 10032, 805,
+	-1000, -1000, -1000, -1000, 10032, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, 191, -1000, -1000, -1000, 6853, 6853, 794, 838,
+	604, -1000, -1000, -1000, -1000, 858, -1000, 691, -1000, -1000,
+	-1000, -1000, -1000, 132, 131, 123, -1000, 716, -1000, -1000,
+	600, -1000, 560, -1000, -1000, -1000, 590, 10032, 308, -1000,
+	149, 484, 606, 100, -108, 363, 557, 6853, 6853, -1000,
+	-1000, 804, 804, 804, -141, -1000, 894, 117, 117, -1000,
+	586, -1000, -1000, -1000, -1000, 266, 514, 981, -1000, -1000,
+	-1000, 972, -1000, -1000, -1000, 881, -101, -121, 363, 363,
+	10032, 10032, 10032, -1000, 244, -1000, 266, -1000, 454, 964,
+	117, -1000, 361, -1000, -1000, -1000, -1000, 556, -1000, 877,
+	-1000, 555, -1000, 555, 555, 804, 350, -1000, 400, 117,
+	-1000, -1000, -103, -1000, 10032, -1000, -1000, -1000, -1000, -1000,
+	-111, -1000, -124, -1000,
 }
 var yyPgo = [...]int{
 
-	0, 19, 21, 1424, 1423, 1421, 26, 996, 1420, 1419,
-	1418, 1417, 55, 1416, 1415, 1414, 1413, 30, 938, 1412,
-	1407, 1099, 1097, 1095, 1406, 1404, 1402, 1401, 1400, 1398,
-	1395, 1390, 1385, 1377, 247, 1374, 1362, 1358, 48, 1357,
-	78, 1351, 94, 1350, 1348, 1346, 43, 77, 40, 38,
-	216, 1345, 29, 7, 15, 1343, 1342, 9, 1340, 1164,
-	1339, 1338, 60, 76, 1337, 1336, 44, 1335, 1334, 1331,
-	1329, 1328, 2, 32, 1326, 69, 1323, 1321, 79, 1018,
-	1316, 1313, 1310, 1306, 1303, 1302, 58, 5, 13, 1,
-	25, 1301, 56, 12, 1300, 52, 1297, 1296, 1294, 1292,
-	34, 1291, 74, 1290, 24, 73, 1287, 51, 17, 50,
-	1286, 1285, 82, 95, 91, 72, 1284, 75, 1283, 1282,
-	192, 1281, 1280, 1279, 916, 1278, 93, 526, 1277, 1274,
-	1272, 1257, 1250, 1246, 1245, 59, 35, 0, 16, 23,
-	37, 1243, 63, 910, 42, 14, 1239, 83, 1235, 57,
-	33, 92, 28, 1234, 1233, 1232, 1231, 1229, 1227, 1226,
-	47, 1225, 1223, 1222, 1208, 1207, 1204, 1203, 1202, 1201,
-	1199, 1196, 1195, 1194, 1193, 1192, 1191, 67, 1188, 1187,
-	1185, 1183, 1180, 1178, 1174, 1162, 1158, 1155, 1152, 10,
-	1151, 1148, 1141, 22, 61, 36, 62, 1135, 1134, 1132,
-	86, 27, 1131, 1130, 1129, 1127, 64, 54, 1126, 81,
-	53, 49, 1125, 1124, 1123, 90, 6, 18, 1122, 1121,
-	1120, 8, 11, 1119, 1117, 1116, 1112, 4, 46, 45,
-	1111, 1110, 20, 1109, 1107, 71, 1106, 1104, 65, 3,
-	1102, 1101, 1093, 1087, 88, 104, 1085, 135,
+	0, 23, 24, 1336, 1335, 1331, 25, 990, 1330, 1328,
+	1325, 1323, 57, 1322, 1320, 1318, 1315, 1314, 157, 901,
+	1311, 1310, 1060, 1058, 1056, 1309, 1308, 1307, 1305, 1295,
+	1294, 1291, 1289, 1288, 1287, 94, 1284, 1283, 1282, 46,
+	1281, 80, 1280, 86, 1279, 1278, 1275, 36, 131, 33,
+	34, 187, 1271, 27, 19, 17, 1270, 1257, 14, 1256,
+	1465, 1254, 1251, 59, 90, 1248, 1247, 38, 1243, 1241,
+	1239, 1238, 1235, 2, 26, 1234, 63, 1233, 1232, 73,
+	108, 1231, 1229, 1228, 1227, 1226, 1223, 48, 8, 13,
+	6, 20, 1222, 69, 11, 1221, 52, 1219, 1218, 1217,
+	1214, 53, 1209, 78, 1208, 45, 77, 1207, 58, 10,
+	51, 1206, 1205, 84, 88, 83, 79, 1204, 76, 1203,
+	1199, 93, 1198, 1196, 1194, 903, 1193, 92, 440, 1191,
+	1190, 1189, 1187, 1183, 1182, 1181, 60, 32, 0, 56,
+	18, 30, 1180, 65, 878, 35, 15, 1175, 91, 1172,
+	1511, 31, 85, 29, 1165, 1164, 1163, 1156, 1155, 1154,
+	1150, 54, 1149, 1148, 1143, 1142, 1140, 1135, 1134, 1133,
+	1132, 1131, 1130, 1129, 1128, 1127, 1126, 1125, 62, 1124,
+	1123, 1122, 1119, 1118, 1117, 1116, 1115, 1114, 1113, 1112,
+	37, 1111, 1110, 1108, 28, 1107, 61, 12, 66, 1106,
+	1105, 1104, 81, 22, 1103, 1096, 1095, 1093, 64, 44,
+	1091, 82, 55, 47, 1089, 1088, 1086, 74, 9, 4,
+	1085, 1084, 1082, 1, 7, 1081, 1080, 1079, 1078, 5,
+	39, 41, 1077, 1074, 16, 1073, 1072, 71, 1071, 1070,
+	67, 3, 1069, 1066, 1065, 1063, 49, 21, 1062, 133,
 }
 var yyR1 = [...]int{
 
-	0, 242, 243, 243, 16, 16, 16, 16, 16, 16,
-	16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-	16, 16, 16, 16, 17, 17, 17, 18, 19, 19,
-	20, 20, 21, 21, 37, 37, 22, 23, 24, 24,
-	240, 240, 239, 165, 165, 7, 7, 25, 25, 25,
-	25, 25, 241, 241, 241, 241, 241, 241, 231, 231,
-	232, 232, 224, 222, 222, 219, 219, 225, 225, 218,
-	218, 223, 223, 220, 220, 227, 227, 227, 227, 227,
-	228, 229, 236, 236, 237, 237, 238, 238, 238, 196,
-	196, 195, 195, 194, 194, 194, 197, 197, 197, 28,
-	211, 213, 213, 214, 214, 215, 215, 215, 215, 215,
-	215, 215, 215, 215, 215, 215, 215, 215, 215, 215,
-	215, 215, 215, 215, 215, 215, 215, 215, 215, 167,
-	169, 171, 172, 173, 174, 175, 176, 177, 178, 179,
-	180, 181, 182, 182, 183, 184, 184, 184, 184, 184,
-	184, 184, 184, 184, 184, 184, 184, 184, 184, 185,
-	185, 186, 186, 187, 187, 188, 188, 170, 193, 193,
-	168, 164, 166, 212, 212, 212, 207, 142, 142, 153,
-	153, 153, 153, 233, 233, 234, 234, 235, 235, 235,
-	235, 235, 235, 235, 235, 235, 235, 156, 156, 154,
-	154, 154, 154, 154, 154, 154, 154, 154, 155, 155,
-	155, 155, 155, 157, 157, 157, 157, 157, 158, 158,
-	158, 158, 158, 158, 158, 158, 158, 158, 158, 158,
-	158, 158, 158, 159, 159, 159, 159, 159, 159, 159,
-	159, 206, 206, 160, 160, 200, 200, 201, 201, 201,
-	198, 198, 199, 199, 202, 202, 161, 161, 161, 161,
-	161, 161, 39, 38, 38, 38, 122, 122, 122, 203,
-	189, 189, 189, 163, 190, 190, 191, 191, 191, 192,
-	192, 192, 204, 204, 205, 205, 162, 208, 208, 208,
-	208, 6, 6, 226, 226, 226, 226, 221, 221, 4,
-	4, 4, 1, 2, 2, 3, 3, 3, 5, 5,
-	210, 210, 209, 209, 217, 217, 216, 26, 26, 26,
-	26, 26, 26, 26, 26, 128, 128, 133, 133, 133,
-	27, 27, 27, 69, 69, 134, 134, 8, 29, 9,
-	129, 129, 129, 67, 67, 67, 10, 12, 12, 12,
-	12, 68, 68, 68, 68, 68, 68, 11, 11, 11,
-	11, 132, 132, 132, 13, 14, 14, 14, 14, 15,
-	15, 15, 15, 15, 15, 15, 15, 15, 30, 30,
-	30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
-	30, 30, 30, 30, 30, 30, 30, 45, 45, 65,
-	65, 65, 62, 62, 63, 63, 64, 64, 61, 61,
-	66, 66, 66, 33, 31, 32, 32, 246, 34, 35,
-	35, 36, 36, 36, 42, 42, 42, 40, 40, 41,
-	41, 48, 48, 47, 47, 49, 49, 49, 49, 141,
-	141, 141, 140, 140, 51, 51, 52, 52, 53, 53,
-	54, 54, 54, 70, 55, 55, 55, 55, 148, 148,
-	146, 146, 146, 145, 145, 56, 56, 56, 56, 57,
-	57, 57, 57, 58, 58, 60, 60, 59, 59, 71,
-	71, 71, 71, 72, 72, 73, 73, 50, 50, 50,
-	50, 50, 50, 50, 125, 125, 75, 75, 74, 74,
-	74, 74, 74, 74, 74, 74, 74, 74, 85, 85,
-	85, 85, 85, 85, 76, 76, 76, 76, 76, 76,
-	76, 46, 46, 86, 86, 86, 92, 87, 87, 79,
-	79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
-	79, 79, 79, 79, 79, 79, 79, 79, 79, 79,
-	79, 79, 79, 79, 79, 79, 79, 79, 79, 83,
-	83, 83, 81, 81, 81, 81, 81, 81, 81, 81,
-	81, 82, 82, 82, 82, 82, 82, 82, 82, 247,
-	247, 84, 84, 84, 84, 43, 43, 43, 43, 43,
-	150, 150, 152, 152, 152, 152, 152, 152, 152, 152,
-	152, 152, 152, 152, 152, 96, 96, 44, 44, 94,
-	94, 95, 97, 97, 93, 93, 93, 78, 78, 78,
-	78, 78, 78, 78, 80, 80, 80, 98, 98, 99,
-	99, 100, 100, 101, 101, 102, 103, 103, 103, 104,
-	104, 104, 104, 105, 105, 105, 77, 77, 77, 77,
-	77, 77, 106, 106, 106, 106, 107, 107, 88, 88,
-	90, 90, 89, 91, 108, 108, 109, 110, 110, 113,
-	113, 112, 112, 112, 112, 112, 121, 121, 120, 120,
-	120, 111, 111, 114, 114, 118, 118, 117, 119, 119,
-	119, 119, 116, 116, 115, 115, 151, 151, 151, 123,
-	123, 126, 126, 127, 127, 124, 124, 130, 130, 130,
-	130, 130, 130, 130, 130, 130, 130, 135, 135, 135,
-	131, 131, 230, 230, 138, 138, 139, 139, 143, 143,
-	144, 144, 147, 147, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
-	136, 136, 136, 136, 136, 136, 136, 136, 136, 136,
+	0, 244, 245, 245, 17, 17, 17, 17, 17, 17,
+	17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
+	17, 17, 17, 17, 17, 18, 18, 18, 19, 20,
+	20, 21, 21, 22, 22, 38, 38, 23, 24, 25,
+	25, 242, 242, 241, 166, 166, 7, 7, 26, 26,
+	26, 26, 26, 243, 243, 243, 243, 243, 243, 233,
+	233, 234, 234, 226, 224, 224, 221, 221, 227, 227,
+	220, 220, 225, 225, 222, 222, 229, 229, 229, 229,
+	229, 230, 231, 238, 238, 239, 239, 240, 240, 240,
+	198, 198, 197, 197, 196, 196, 196, 199, 199, 199,
+	29, 213, 215, 215, 216, 216, 217, 217, 217, 217,
+	217, 217, 217, 217, 217, 217, 217, 217, 217, 217,
+	217, 217, 217, 217, 217, 217, 217, 217, 217, 217,
+	168, 170, 172, 173, 174, 175, 176, 177, 178, 179,
+	180, 181, 182, 183, 183, 184, 185, 185, 185, 185,
+	185, 185, 185, 185, 185, 185, 185, 185, 185, 185,
+	186, 186, 187, 187, 188, 188, 189, 189, 171, 194,
+	194, 169, 165, 167, 214, 214, 214, 209, 143, 143,
+	154, 154, 154, 154, 235, 235, 236, 236, 237, 237,
+	237, 237, 237, 237, 237, 237, 237, 237, 157, 157,
+	155, 155, 155, 155, 155, 155, 155, 155, 155, 156,
+	156, 156, 156, 156, 158, 158, 158, 158, 158, 159,
+	159, 159, 159, 159, 159, 159, 159, 159, 159, 159,
+	159, 159, 159, 159, 160, 160, 160, 160, 160, 160,
+	160, 160, 208, 208, 161, 161, 202, 202, 203, 203,
+	203, 200, 200, 201, 201, 204, 204, 162, 162, 162,
+	162, 162, 162, 40, 39, 39, 39, 123, 123, 123,
+	205, 190, 190, 190, 164, 191, 191, 192, 192, 192,
+	193, 193, 193, 206, 206, 207, 207, 163, 210, 210,
+	210, 210, 6, 6, 228, 228, 228, 228, 223, 223,
+	4, 4, 4, 1, 2, 2, 3, 3, 3, 5,
+	5, 212, 212, 211, 211, 219, 219, 218, 27, 27,
+	27, 27, 27, 27, 27, 27, 129, 129, 134, 134,
+	134, 28, 28, 28, 70, 70, 135, 135, 8, 30,
+	9, 130, 130, 130, 68, 68, 68, 10, 12, 12,
+	12, 12, 69, 69, 69, 69, 69, 69, 11, 11,
+	11, 11, 195, 195, 195, 195, 195, 13, 133, 133,
+	133, 14, 16, 16, 16, 16, 15, 15, 15, 15,
+	15, 15, 15, 15, 15, 31, 31, 31, 31, 31,
+	31, 31, 31, 31, 31, 31, 31, 31, 31, 31,
+	31, 31, 31, 31, 46, 46, 66, 66, 66, 63,
+	63, 64, 64, 65, 65, 62, 62, 67, 67, 67,
+	34, 32, 33, 33, 248, 35, 36, 36, 37, 37,
+	37, 43, 43, 43, 41, 41, 42, 42, 49, 49,
+	48, 48, 50, 50, 50, 50, 142, 142, 142, 141,
+	141, 52, 52, 53, 53, 54, 54, 55, 55, 55,
+	71, 56, 56, 56, 56, 149, 149, 147, 147, 147,
+	146, 146, 57, 57, 57, 57, 58, 58, 58, 58,
+	59, 59, 61, 61, 60, 60, 72, 72, 72, 72,
+	73, 73, 74, 74, 51, 51, 51, 51, 51, 51,
+	51, 126, 126, 76, 76, 75, 75, 75, 75, 75,
+	75, 75, 75, 75, 75, 86, 86, 86, 86, 86,
+	86, 77, 77, 77, 77, 77, 77, 77, 47, 47,
+	87, 87, 87, 93, 88, 88, 80, 80, 80, 80,
+	80, 80, 80, 80, 80, 80, 80, 80, 80, 80,
+	80, 80, 80, 80, 80, 80, 80, 80, 80, 80,
+	80, 80, 80, 80, 80, 80, 84, 84, 84, 82,
+	82, 82, 82, 82, 82, 82, 82, 82, 83, 83,
+	83, 83, 83, 83, 83, 83, 249, 249, 85, 85,
+	85, 85, 44, 44, 44, 44, 44, 151, 151, 153,
+	153, 153, 153, 153, 153, 153, 153, 153, 153, 153,
+	153, 153, 97, 97, 45, 45, 95, 95, 96, 98,
+	98, 94, 94, 94, 79, 79, 79, 79, 79, 79,
+	79, 81, 81, 81, 99, 99, 100, 100, 101, 101,
+	102, 102, 103, 104, 104, 104, 105, 105, 105, 105,
+	106, 106, 106, 78, 78, 78, 78, 78, 78, 107,
+	107, 107, 107, 108, 108, 89, 89, 91, 91, 90,
+	92, 109, 109, 110, 111, 111, 114, 114, 113, 113,
+	113, 113, 113, 122, 122, 121, 121, 121, 112, 112,
+	115, 115, 119, 119, 118, 120, 120, 120, 120, 117,
+	117, 116, 116, 152, 152, 152, 124, 124, 127, 127,
+	128, 128, 125, 125, 131, 131, 131, 131, 131, 131,
+	131, 131, 131, 131, 136, 136, 136, 132, 132, 232,
+	232, 139, 139, 140, 140, 144, 144, 145, 145, 148,
+	148, 137, 137, 137, 137, 137, 137, 137, 137, 137,
+	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
+	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
+	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
@@ -2160,83 +2209,93 @@ var yyR1 = [...]int{
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
 	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
-	137, 137, 137, 137, 137, 137, 137, 244, 245, 149,
+	137, 137, 137, 137, 137, 137, 137, 137, 137, 137,
+	137, 137, 137, 137, 137, 137, 137, 137, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 138, 138, 138, 138, 138,
+	138, 138, 138, 138, 138, 246, 247, 150,
 }
 var yyR2 = [...]int{
 
 	0, 2, 0, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 4, 6, 7, 10, 1, 3,
-	1, 3, 6, 7, 1, 1, 8, 7, 3, 3,
-	1, 3, 5, 0, 2, 1, 1, 3, 5, 11,
-	11, 11, 0, 1, 1, 5, 9, 7, 1, 1,
-	1, 1, 2, 3, 2, 0, 2, 1, 1, 0,
-	2, 1, 3, 0, 2, 0, 1, 1, 2, 2,
-	3, 3, 0, 1, 1, 2, 4, 4, 2, 0,
-	1, 0, 1, 1, 2, 2, 1, 1, 1, 4,
-	4, 0, 1, 1, 2, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 1, 4, 6, 7, 10, 1,
+	3, 1, 3, 6, 7, 1, 1, 8, 7, 3,
+	3, 1, 3, 5, 0, 2, 1, 1, 3, 5,
+	11, 11, 11, 0, 1, 1, 5, 9, 7, 1,
+	1, 1, 1, 2, 3, 2, 0, 2, 1, 1,
+	0, 2, 1, 3, 0, 2, 0, 1, 1, 2,
+	2, 3, 3, 0, 1, 1, 2, 4, 4, 2,
+	0, 1, 0, 1, 1, 2, 2, 1, 1, 1,
+	4, 4, 0, 1, 1, 2, 1, 1, 1, 1,
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 3,
-	3, 4, 3, 3, 4, 4, 3, 3, 3, 3,
+	3, 3, 4, 3, 3, 4, 4, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 1, 1,
-	3, 3, 4, 1, 3, 3, 3, 1, 1, 3,
-	1, 1, 1, 0, 1, 1, 2, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 2, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
-	2, 2, 2, 1, 2, 2, 2, 1, 3, 3,
-	2, 2, 2, 2, 2, 2, 1, 1, 1, 1,
-	1, 4, 4, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 3, 0, 3, 0, 5, 0, 3, 5,
-	0, 1, 0, 1, 1, 2, 2, 2, 2, 2,
-	2, 2, 3, 1, 3, 4, 1, 1, 1, 1,
-	0, 3, 3, 2, 0, 2, 2, 2, 2, 2,
-	2, 2, 2, 1, 2, 1, 2, 7, 7, 8,
-	9, 0, 1, 3, 1, 2, 3, 0, 2, 0,
-	1, 2, 2, 0, 1, 1, 1, 1, 1, 1,
-	0, 1, 1, 1, 1, 3, 2, 6, 7, 7,
-	7, 9, 7, 7, 7, 0, 1, 0, 1, 1,
-	6, 6, 4, 1, 3, 0, 1, 3, 3, 2,
-	1, 1, 1, 0, 1, 1, 3, 1, 1, 1,
-	1, 0, 3, 3, 3, 1, 1, 3, 5, 3,
-	6, 0, 1, 1, 4, 2, 3, 2, 2, 4,
-	4, 3, 6, 3, 3, 4, 4, 4, 6, 5,
-	5, 3, 3, 5, 6, 7, 3, 3, 3, 5,
-	3, 3, 3, 3, 3, 3, 3, 0, 3, 1,
-	1, 1, 0, 2, 1, 1, 0, 1, 1, 1,
-	0, 2, 2, 4, 2, 2, 2, 0, 2, 0,
-	2, 1, 2, 2, 0, 1, 1, 0, 1, 0,
-	1, 0, 1, 1, 3, 1, 2, 3, 5, 0,
-	1, 2, 1, 1, 0, 2, 1, 3, 1, 1,
-	1, 3, 3, 3, 3, 5, 5, 3, 0, 1,
-	0, 1, 2, 1, 1, 1, 2, 2, 1, 2,
-	3, 2, 3, 2, 2, 2, 1, 1, 3, 0,
-	5, 5, 5, 1, 3, 0, 2, 1, 3, 3,
-	2, 3, 1, 2, 0, 3, 1, 1, 3, 3,
-	4, 4, 5, 3, 4, 5, 6, 2, 1, 2,
-	1, 2, 1, 2, 1, 1, 1, 1, 1, 1,
-	1, 0, 2, 1, 1, 1, 3, 1, 3, 1,
-	1, 1, 1, 1, 3, 3, 3, 3, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
-	2, 2, 2, 2, 3, 1, 1, 1, 1, 4,
-	5, 6, 4, 4, 6, 6, 6, 9, 7, 5,
-	4, 2, 2, 2, 2, 2, 2, 2, 2, 0,
-	2, 4, 4, 4, 4, 0, 3, 4, 7, 3,
-	1, 1, 2, 3, 3, 1, 2, 2, 1, 2,
-	1, 2, 2, 1, 2, 0, 1, 0, 2, 1,
-	2, 4, 0, 2, 1, 3, 5, 1, 1, 1,
-	1, 1, 1, 1, 1, 2, 2, 0, 3, 0,
-	2, 0, 3, 1, 3, 2, 0, 1, 1, 0,
-	2, 4, 4, 0, 2, 4, 2, 1, 3, 5,
-	4, 6, 1, 3, 3, 5, 0, 5, 1, 3,
-	1, 2, 3, 1, 1, 3, 3, 1, 3, 1,
-	2, 3, 3, 3, 2, 3, 1, 2, 1, 1,
-	1, 2, 3, 2, 2, 0, 2, 3, 2, 2,
-	2, 1, 0, 2, 2, 2, 1, 1, 1, 1,
-	1, 0, 2, 0, 3, 0, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 0, 1, 1,
-	1, 1, 0, 1, 1, 1, 1, 1, 1, 1,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 1,
+	1, 3, 3, 4, 1, 3, 3, 3, 1, 1,
+	3, 1, 1, 1, 0, 1, 1, 2, 1, 1,
+	1, 1, 1, 1, 1, 1, 1, 1, 2, 1,
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 2,
+	2, 2, 2, 2, 1, 2, 2, 2, 1, 3,
+	3, 2, 2, 2, 2, 2, 2, 1, 1, 1,
+	1, 1, 4, 4, 1, 1, 1, 1, 1, 1,
+	1, 1, 1, 3, 0, 3, 0, 5, 0, 3,
+	5, 0, 1, 0, 1, 1, 2, 2, 2, 2,
+	2, 2, 2, 3, 1, 3, 4, 1, 1, 1,
+	1, 0, 3, 3, 2, 0, 2, 2, 2, 2,
+	2, 2, 2, 2, 1, 2, 1, 2, 7, 7,
+	8, 9, 0, 1, 3, 1, 2, 3, 0, 2,
+	0, 1, 2, 2, 0, 1, 1, 1, 1, 1,
+	1, 0, 1, 1, 1, 1, 3, 2, 6, 7,
+	7, 7, 9, 7, 7, 7, 0, 1, 0, 1,
+	1, 6, 6, 4, 1, 3, 0, 1, 3, 3,
+	2, 1, 1, 1, 0, 1, 1, 3, 1, 1,
+	1, 1, 0, 3, 3, 3, 1, 1, 3, 5,
+	3, 6, 0, 1, 1, 1, 1, 2, 0, 1,
+	1, 4, 2, 3, 2, 2, 4, 4, 3, 6,
+	3, 3, 4, 4, 4, 6, 5, 5, 3, 3,
+	5, 6, 7, 3, 3, 3, 5, 3, 3, 3,
+	3, 3, 3, 3, 0, 3, 1, 1, 1, 0,
+	2, 1, 1, 0, 1, 1, 1, 0, 2, 2,
+	4, 2, 2, 2, 0, 2, 0, 2, 1, 2,
+	2, 0, 1, 1, 0, 1, 0, 1, 0, 1,
+	1, 3, 1, 2, 3, 5, 0, 1, 2, 1,
+	1, 0, 2, 1, 3, 1, 1, 1, 3, 3,
+	3, 3, 5, 5, 3, 0, 1, 0, 1, 2,
+	1, 1, 1, 2, 2, 1, 2, 3, 2, 3,
+	2, 2, 2, 1, 1, 3, 0, 5, 5, 5,
+	1, 3, 0, 2, 1, 3, 3, 2, 3, 1,
+	2, 0, 3, 1, 1, 3, 3, 4, 4, 5,
+	3, 4, 5, 6, 2, 1, 2, 1, 2, 1,
+	2, 1, 1, 1, 1, 1, 1, 1, 0, 2,
+	1, 1, 1, 3, 1, 3, 1, 1, 1, 1,
+	1, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 2, 2, 2, 2,
+	2, 3, 1, 1, 1, 1, 4, 5, 6, 4,
+	4, 6, 6, 6, 9, 7, 5, 4, 2, 2,
+	2, 2, 2, 2, 2, 2, 0, 2, 4, 4,
+	4, 4, 0, 3, 4, 7, 3, 1, 1, 2,
+	3, 3, 1, 2, 2, 1, 2, 1, 2, 2,
+	1, 2, 0, 1, 0, 2, 1, 2, 4, 0,
+	2, 1, 3, 5, 1, 1, 1, 1, 1, 1,
+	1, 1, 2, 2, 0, 3, 0, 2, 0, 3,
+	1, 3, 2, 0, 1, 1, 0, 2, 4, 4,
+	0, 2, 4, 2, 1, 3, 5, 4, 6, 1,
+	3, 3, 5, 0, 5, 1, 3, 1, 2, 3,
+	1, 1, 3, 3, 1, 3, 1, 2, 3, 3,
+	3, 2, 3, 1, 2, 1, 1, 1, 2, 3,
+	2, 2, 0, 2, 3, 2, 2, 2, 1, 0,
+	2, 2, 2, 1, 1, 1, 1, 1, 0, 2,
+	0, 3, 0, 1, 1, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 0, 1, 1, 1, 1, 0,
+	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@@ -2257,317 +2316,319 @@ var yyR2 = [...]int{
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+	1, 1, 1, 1, 1, 1, 1, 0,
 }
 var yyChk = [...]int{
 
-	-1000, -242, -16, -17, -21, -22, -23, -24, -25, -26,
-	-27, -8, -29, -30, -33, -31, -9, -10, -11, -13,
-	-14, -15, -32, -18, -19, 6, -37, 8, 9, 44,
-	-28, 125, 126, 127, 149, 129, 144, 47, 64, 273,
-	-129, 280, 283, 284, 287, 286, 301, 147, 148, -244,
-	7, 253, 143, 142, 141, 67, -243, 309, -100, 14,
-	-36, 5, -34, -246, -34, -34, -34, -34, -211, 67,
-	-7, -230, 23, 31, 132, 245, 246, 34, -124, 136,
-	-128, 133, -7, 33, -134, 132, 132, 238, 125, 233,
-	275, -64, -65, 277, 278, 240, 132, 279, 236, 276,
-	235, 232, 173, 70, 46, 133, 27, 25, 132, -143,
-	70, -137, 259, 19, 204, 150, 169, 260, 306, 79,
-	203, 206, 207, 145, 165, 209, 208, 201, 159, 42,
-	199, 183, 281, 264, 269, 242, 198, 160, 266, 23,
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+	-219, -229, -227, -224, -226, 26, 79, 138, -229, -225,
+	-224, 263, -229, -224, -247, 261, 63, 264, -51, -51,
+	-246, -246, -246, -241, 48, -228, 26, -1, 79, 263,
+	-223, 69, -197, 72, -233, 24, 20, 28, 53, 262,
+	265, -73, -139, -73, -73, 104, -197, 72, 28, -223,
+	73, 70, 53, -247, 68, -247, -247, -90, 73, 70,
+	263, -139, 264, 265,
 }
 var yyDef = [...]int{
 
 	0, -2, 2, -2, 5, 6, 7, 8, 9, 10,
 	11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
-	21, 22, 23, 631, 0, 417, 417, 417, 417, 417,
-	0, 722, 705, 325, 335, 0, 406, 0, 0, 939,
-	351, 361, 939, 0, 939, 939, 0, 939, 939, 0,
-	34, 35, 340, 341, 342, 937, 1, 3, 639, 0,
-	0, 421, 424, 419, 705, 0, 0, 0, 52, 0,
-	703, 0, 0, 0, 703, 45, 46, 723, 0, 706,
-	0, 0, 701, 326, 0, 336, 0, 0, 0, 939,
-	939, 0, 0, 939, 939, 939, 0, 939, 939, 939,
-	939, 939, 939, 939, 407, 399, 400, 401, 0, 414,
-	728, 729, 860, 861, 862, 863, 864, 865, 866, 867,
-	868, 869, 870, 871, 872, 873, 874, 875, 876, 877,
-	878, 879, 880, 881, 882, 883, 884, 885, 886, 887,
-	888, 889, 890, 891, 892, 893, 894, 895, 896, 897,
-	898, 899, 900, 901, 902, 903, 904, 905, 906, 907,
-	908, 909, 910, 911, 912, 913, 914, 915, 916, 917,
-	918, 919, 920, 921, 922, 923, 924, 925, 926, 927,
-	928, 929, 930, 931, 932, 933, 934, 935, 936, 339,
-	343, 0, 0, 477, 886, -2, 356, 0, 362, 363,
-	365, 939, 367, 368, 0, 0, 939, 0, 939, 939,
-	0, 415, 416, 28, 643, 0, 0, 631, 30, 0,
-	417, 422, 423, 427, 425, 426, 418, 0, 0, 0,
-	38, 39, 667, 0, 0, 669, 696, 697, -2, 0,
-	0, 0, 726, 727, -2, 746, 724, 725, 734, 735,
-	736, 737, 738, 739, 740, 741, 742, 743, 744, 745,
-	748, 749, 750, 751, 752, 753, 754, 755, 756, 757,
-	758, 759, 760, 761, 762, 763, 764, 765, 766, 767,
-	768, 769, 770, 771, 772, 773, 774, 775, 776, 777,
-	778, 779, 780, 781, 782, 783, 784, 785, 786, 787,
-	788, 789, 790, 791, 792, 793, 794, 795, 796, 797,
-	798, 799, 800, 801, 802, 803, 804, 805, 806, 807,
-	808, 809, 810, 811, 812, 813, 814, 815, 816, 817,
-	818, 819, 820, 821, 822, 823, 824, 825, 826, 827,
-	828, 829, 830, 831, 832, 833, 834, 835, 836, 837,
-	838, 839, 840, 841, 842, 843, 844, 845, 846, 847,
-	848, 849, 850, 851, 852, 853, 854, 855, 856, 857,
-	858, 859, 47, 53, 54, 0, 0, 0, 173, 0,
-	177, 178, 0, 0, 0, 0, 0, 0, 0, 701,
-	0, 0, 0, 337, 338, 397, 0, 0, 381, 382,
-	402, 0, 408, 409, 0, 404, 405, 386, 387, 388,
-	402, 390, 391, 392, 393, 394, 395, 396, 939, 346,
-	344, 345, 357, 0, -2, 348, 349, 350, 359, 0,
-	0, 0, 939, 366, 939, 0, 939, 371, 717, 373,
-	374, 939, 939, 939, 29, 938, 24, 0, 0, 640,
-	487, 0, 492, 494, 0, 529, 530, 531, 532, 533,
-	0, 0, 0, 0, 0, 0, 555, 556, 557, 558,
-	617, 618, 619, 620, 621, 622, 623, 496, 497, 614,
-	0, 663, 0, 0, 0, 0, 0, 0, 0, 605,
-	0, 579, 579, 579, 579, 579, 579, 579, 579, 0,
-	0, 0, 0, -2, -2, 632, 633, 636, 639, 28,
-	424, 0, 429, 428, 420, 0, 0, 476, 0, 485,
-	0, 681, 692, 685, 0, 0, 670, 0, 0, 674,
-	678, 679, 680, 274, 677, 0, 0, -2, 299, 183,
-	250, 180, 181, 182, 243, 198, 243, 243, 243, 243,
-	270, 270, 270, 270, 226, 227, 228, 229, 230, 0,
-	0, 213, 243, 243, 243, 217, 233, 234, 235, 236,
-	237, 238, 239, 240, 199, 200, 201, 202, 203, 204,
-	205, 206, 207, 245, 245, 245, 247, 247, -2, 732,
-	733, 0, 0, 0, 0, 99, 0, 0, 0, 332,
-	702, 639, 0, 939, 939, 410, 0, 0, 402, 939,
-	413, 0, 0, 478, 730, 731, 746, 747, 352, 353,
-	354, 364, 369, 0, 527, 370, 0, 718, 719, 375,
-	376, 377, 644, 0, 0, 0, 0, 0, 0, 490,
+	21, 22, 23, 24, 638, 0, 424, 424, 424, 424,
+	424, 0, 729, 712, 326, 336, 0, 413, 0, 0,
+	947, 352, 362, 368, 947, 0, 947, 947, 0, 947,
+	947, 0, 35, 36, 341, 342, 343, 945, 1, 3,
+	646, 0, 0, 428, 431, 426, 712, 0, 0, 0,
+	53, 0, 710, 0, 0, 0, 710, 46, 47, 730,
+	0, 713, 0, 0, 708, 327, 0, 337, 0, 0,
+	0, 947, 947, 0, 0, 947, 947, 947, 0, 947,
+	947, 947, 947, 947, 947, 947, 414, 406, 407, 408,
+	0, 421, 735, 736, 868, 869, 870, 871, 872, 873,
+	874, 875, 876, 877, 878, 879, 880, 881, 882, 883,
+	884, 885, 886, 887, 888, 889, 890, 891, 892, 893,
+	894, 895, 896, 897, 898, 899, 900, 901, 902, 903,
+	904, 905, 906, 907, 908, 909, 910, 911, 912, 913,
+	914, 915, 916, 917, 918, 919, 920, 921, 922, 923,
+	924, 925, 926, 927, 928, 929, 930, 931, 932, 933,
+	934, 935, 936, 937, 938, 939, 940, 941, 942, 943,
+	944, 340, 344, 0, 0, 484, 894, -2, 357, 367,
+	363, 364, 365, 366, 741, 742, 743, 744, 745, 746,
+	747, 748, 749, 750, 751, 752, 753, 754, 755, 756,
+	757, 758, 759, 760, 761, 762, 763, 764, 765, 766,
+	767, 768, 769, 770, 771, 772, 773, 774, 775, 776,
+	777, 778, 779, 780, 781, 782, 783, 784, 785, 786,
+	787, 788, 789, 790, 791, 792, 793, 794, 795, 796,
+	797, 798, 799, 800, 801, 802, 803, 804, 805, 806,
+	807, 808, 809, 810, 811, 812, 813, 814, 815, 816,
+	817, 818, 819, 820, 821, 822, 823, 824, 825, 826,
+	827, 828, 829, 830, 831, 832, 833, 834, 835, 836,
+	837, 838, 839, 840, 841, 842, 843, 844, 845, 846,
+	847, 848, 849, 850, 851, 852, 853, 854, 855, 856,
+	857, 858, 859, 860, 861, 862, 863, 864, 865, 866,
+	867, 0, 369, 370, 372, 947, 374, 375, 0, 0,
+	947, 0, 947, 947, 0, 422, 423, 29, 650, 0,
+	0, 638, 31, 0, 424, 429, 430, 434, 432, 433,
+	425, 0, 0, 0, 39, 40, 674, 0, 0, 676,
+	703, 704, -2, 0, 0, 0, 733, 734, -2, 753,
+	731, 732, 48, 54, 55, 0, 0, 0, 174, 0,
+	178, 179, 0, 0, 0, 0, 0, 0, 0, 708,
+	0, 0, 0, 338, 339, 404, 0, 0, 388, 389,
+	409, 0, 415, 416, 0, 411, 412, 393, 394, 395,
+	409, 397, 398, 399, 400, 401, 402, 403, 947, 347,
+	345, 346, 358, 0, -2, 349, 350, 351, 360, 0,
+	0, 0, 947, 373, 947, 0, 947, 378, 724, 380,
+	381, 947, 947, 947, 30, 946, 25, 0, 0, 647,
+	494, 0, 499, 501, 0, 536, 537, 538, 539, 540,
+	0, 0, 0, 0, 0, 0, 562, 563, 564, 565,
+	624, 625, 626, 627, 628, 629, 630, 503, 504, 621,
+	0, 670, 0, 0, 0, 0, 0, 0, 0, 612,
+	0, 586, 586, 586, 586, 586, 586, 586, 586, 0,
+	0, 0, 0, -2, -2, 639, 640, 643, 646, 29,
+	431, 0, 436, 435, 427, 0, 0, 483, 0, 492,
+	0, 688, 699, 692, 0, 0, 677, 0, 0, 681,
+	685, 686, 687, 275, 684, 0, 0, -2, 300, 184,
+	251, 181, 182, 183, 244, 199, 244, 244, 244, 244,
+	271, 271, 271, 271, 227, 228, 229, 230, 231, 0,
+	0, 214, 244, 244, 244, 218, 234, 235, 236, 237,
+	238, 239, 240, 241, 200, 201, 202, 203, 204, 205,
+	206, 207, 208, 246, 246, 246, 248, 248, -2, 739,
+	740, 0, 0, 0, 0, 100, 0, 0, 0, 333,
+	709, 646, 0, 947, 947, 417, 0, 0, 409, 947,
+	420, 0, 0, 485, 737, 738, 353, 354, 355, 371,
+	376, 0, 534, 377, 0, 725, 726, 382, 383, 384,
+	651, 0, 0, 0, 0, 0, 0, 497, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 514,
-	515, 516, 517, 518, 519, 520, 493, 0, 507, 0,
-	0, 0, 549, 550, 551, 552, 553, 0, 431, 0,
-	28, 0, 0, 0, 0, 0, 0, 427, 0, 606,
-	0, 571, 0, 572, 573, 574, 575, 576, 577, 578,
-	0, 431, 0, 0, 0, 635, 637, 638, 643, 31,
-	427, 0, 624, 0, 0, 0, 430, 656, 0, 0,
-	-2, 0, 475, 485, 664, 0, 614, 0, 631, 0,
-	668, 0, 683, 0, 684, 0, 0, 694, 695, 682,
-	671, 672, 673, 675, 0, 0, 0, 0, 100, -2,
-	103, 105, 106, 107, 108, 109, 110, 111, 112, 113,
-	114, 115, 116, 117, 118, 119, 120, 121, 122, 123,
-	124, 125, 126, 127, 128, 91, 91, 0, 91, 91,
-	91, 91, 91, 0, 0, 91, 91, 91, 91, 91,
-	91, 91, 91, 91, 91, 91, 91, 91, 90, 174,
-	175, 291, 310, 0, 312, 313, 308, -2, 300, 176,
-	184, 185, 187, 188, 189, 190, 191, 192, 193, 194,
-	195, 196, 254, 0, 0, 269, 0, 283, 285, 0,
-	0, 0, 0, 0, 252, 251, 197, 0, 270, 270,
-	220, 221, 222, 0, 223, 224, 225, 0, 0, 214,
-	215, 216, 208, 0, 209, 210, 211, 0, 212, 48,
-	-2, 84, 0, 704, 0, 0, 0, 939, 717, 0,
-	714, 0, 712, 0, 707, 708, 709, 710, 711, 713,
-	715, 716, 327, 333, 75, 939, 0, 379, 380, 383,
-	0, 0, 403, 402, 485, 389, 358, 0, 0, 662,
-	939, 0, 488, 489, 491, 508, 0, 510, 512, 641,
-	642, 498, 499, 523, 524, 525, 0, 0, 0, 0,
-	521, 503, 0, 534, 535, 536, 537, 538, 539, 540,
-	541, 542, 543, 544, 545, 548, 590, 591, 0, 546,
-	547, 554, 0, 0, 432, 433, 435, 439, 0, 615,
-	0, -2, 526, 28, 0, 0, 0, 0, 0, 0,
-	612, 609, 0, 0, 580, 0, 0, 0, 0, 634,
-	25, 0, 699, 700, 625, 626, 444, 32, 0, 656,
-	646, 658, 660, 0, 28, 0, 652, 631, 0, 0,
-	0, 639, 486, 693, 686, 687, 0, 0, 691, 275,
-	0, 0, 0, 104, 0, 92, 0, 91, 91, 93,
-	0, 0, 0, 0, 0, 0, 0, 91, 91, 0,
+	0, 0, 0, 0, 0, 0, 0, 521, 522, 523,
+	524, 525, 526, 527, 500, 0, 514, 0, 0, 0,
+	556, 557, 558, 559, 560, 0, 438, 0, 29, 0,
+	0, 0, 0, 0, 0, 434, 0, 613, 0, 578,
+	0, 579, 580, 581, 582, 583, 584, 585, 0, 438,
+	0, 0, 0, 642, 644, 645, 650, 32, 434, 0,
+	631, 0, 0, 0, 437, 663, 0, 0, -2, 0,
+	482, 492, 671, 0, 621, 0, 638, 0, 675, 0,
+	690, 0, 691, 0, 0, 701, 702, 689, 678, 679,
+	680, 682, 0, 0, 0, 0, 101, -2, 104, 106,
+	107, 108, 109, 110, 111, 112, 113, 114, 115, 116,
+	117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
+	127, 128, 129, 92, 92, 0, 92, 92, 92, 92,
+	92, 0, 0, 92, 92, 92, 92, 92, 92, 92,
+	92, 92, 92, 92, 92, 92, 91, 175, 176, 292,
+	311, 0, 313, 314, 309, -2, 301, 177, 185, 186,
+	188, 189, 190, 191, 192, 193, 194, 195, 196, 197,
+	255, 0, 0, 270, 0, 284, 286, 0, 0, 0,
+	0, 0, 253, 252, 198, 0, 271, 271, 221, 222,
+	223, 0, 224, 225, 226, 0, 0, 215, 216, 217,
+	209, 0, 210, 211, 212, 0, 213, 49, -2, 85,
+	0, 711, 0, 0, 0, 947, 724, 0, 721, 0,
+	719, 0, 714, 715, 716, 717, 718, 720, 722, 723,
+	328, 334, 76, 947, 0, 386, 387, 390, 0, 0,
+	410, 409, 492, 396, 359, 0, 0, 669, 947, 0,
+	495, 496, 498, 515, 0, 517, 519, 648, 649, 505,
+	506, 530, 531, 532, 0, 0, 0, 0, 528, 510,
+	0, 541, 542, 543, 544, 545, 546, 547, 548, 549,
+	550, 551, 552, 555, 597, 598, 0, 553, 554, 561,
+	0, 0, 439, 440, 442, 446, 0, 622, 0, -2,
+	533, 29, 0, 0, 0, 0, 0, 0, 619, 616,
+	0, 0, 587, 0, 0, 0, 0, 641, 26, 0,
+	706, 707, 632, 633, 451, 33, 0, 663, 653, 665,
+	667, 0, 29, 0, 659, 638, 0, 0, 0, 646,
+	493, 700, 693, 694, 0, 0, 698, 276, 0, 0,
+	0, 105, 0, 93, 0, 92, 92, 94, 0, 0,
+	0, 0, 0, 0, 0, 92, 92, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 303, 292, 291, 311, 0, 310, 301, 186,
-	255, 256, 257, 258, 259, 260, 261, 263, 266, 267,
-	268, 282, 284, 286, 0, 273, 168, 169, 276, 277,
-	278, 279, 280, 281, 179, 253, 0, 218, 219, 0,
-	0, 241, 0, 0, 0, 85, 91, 91, 88, 0,
-	0, 0, 317, 0, 939, 720, 721, 0, 0, 0,
-	0, 0, 330, 0, 328, 329, 331, 76, 77, 91,
-	91, 378, 398, 411, 412, 410, 384, 360, 528, 372,
-	645, 509, 511, 513, 500, 521, 504, 0, 501, 0,
-	0, 495, 559, 0, 0, 436, 440, 0, 442, 443,
-	0, 431, 0, -2, 562, 563, 0, 0, 0, 0,
-	631, 0, 610, 0, 0, 570, 581, 582, 583, 584,
-	26, 485, 0, 0, 33, 0, 661, -2, 0, 0,
-	0, 639, 665, 666, 615, 37, 688, 689, 690, 55,
-	0, 0, 170, 171, 0, 0, 94, 95, 129, 130,
-	167, 132, 133, 0, 0, 136, 137, 138, 139, 140,
-	141, 142, 143, 144, 145, 146, 147, 148, 149, 150,
-	151, 152, 153, 154, 155, 156, 157, 158, 159, 160,
-	161, 162, 163, 164, 165, 166, 0, 304, 0, 0,
-	303, 291, 0, 262, 244, 271, 272, 231, 0, 232,
-	0, 248, 0, 0, 0, 0, 0, 0, 318, 319,
-	320, 0, 322, 323, 324, 334, 78, 79, 0, 0,
-	385, 502, 0, 522, 505, 560, 434, 441, 437, 0,
-	0, 616, 0, 243, 243, 595, 243, 247, 598, 243,
-	600, 243, 603, 0, 0, 0, 607, 569, 613, 0,
-	627, 445, 446, 448, 449, 450, 458, 0, 460, 0,
-	659, 0, -2, 0, 654, 653, 36, 0, 43, 131,
-	172, 134, 135, 0, 302, 305, 306, 307, 0, 0,
-	303, 264, 0, 242, 0, 0, 86, 60, 61, 87,
-	96, 97, 98, 0, 314, 243, 0, 0, 0, 80,
-	81, 506, 0, 561, 564, 592, 270, 596, 597, 599,
-	601, 602, 604, 566, 565, 0, 0, 0, 611, 629,
-	0, 0, 0, 0, 0, 465, 0, 0, 468, 0,
-	0, 0, 0, 459, 0, 0, 479, 461, 0, 463,
-	464, 0, 649, 28, 0, 0, 57, 0, 0, 0,
-	0, 0, 265, 246, 249, 65, 0, 316, 69, 73,
-	321, 438, 593, 594, 585, 568, 608, 27, 0, 0,
-	447, 454, 0, 457, 466, 467, 469, 0, 471, 0,
-	473, 474, 451, 452, 453, 0, 0, 0, 462, 657,
-	-2, 655, 0, 40, 0, 44, 297, 297, 0, 0,
-	75, 315, 75, 75, 0, 0, 0, 630, 628, 0,
-	0, 470, 472, 0, 0, 0, 0, 56, 0, 287,
-	288, 297, 0, 49, 66, 67, 68, 91, 0, 0,
-	50, 70, 71, 0, 51, 74, 567, 0, 0, 0,
-	455, 456, 0, 0, 0, 41, 0, 298, 91, 294,
-	0, 0, 289, 297, 0, 64, 62, 58, 59, 0,
-	586, 0, 589, 0, 483, 0, 0, 0, 0, 295,
-	0, 290, 63, 72, 587, 480, 0, 481, 482, 42,
-	293, 296, 0, 484, 0, 588,
+	304, 293, 292, 312, 0, 311, 302, 187, 256, 257,
+	258, 259, 260, 261, 262, 264, 267, 268, 269, 283,
+	285, 287, 0, 274, 169, 170, 277, 278, 279, 280,
+	281, 282, 180, 254, 0, 219, 220, 0, 0, 242,
+	0, 0, 0, 86, 92, 92, 89, 0, 0, 0,
+	318, 0, 947, 727, 728, 0, 0, 0, 0, 0,
+	331, 0, 329, 330, 332, 77, 78, 92, 92, 385,
+	405, 418, 419, 417, 391, 361, 535, 379, 652, 516,
+	518, 520, 507, 528, 511, 0, 508, 0, 0, 502,
+	566, 0, 0, 443, 447, 0, 449, 450, 0, 438,
+	0, -2, 569, 570, 0, 0, 0, 0, 638, 0,
+	617, 0, 0, 577, 588, 589, 590, 591, 27, 492,
+	0, 0, 34, 0, 668, -2, 0, 0, 0, 646,
+	672, 673, 622, 38, 695, 696, 697, 56, 0, 0,
+	171, 172, 0, 0, 95, 96, 130, 131, 168, 133,
+	134, 0, 0, 137, 138, 139, 140, 141, 142, 143,
+	144, 145, 146, 147, 148, 149, 150, 151, 152, 153,
+	154, 155, 156, 157, 158, 159, 160, 161, 162, 163,
+	164, 165, 166, 167, 0, 305, 0, 0, 304, 292,
+	0, 263, 245, 272, 273, 232, 0, 233, 0, 249,
+	0, 0, 0, 0, 0, 0, 319, 320, 321, 0,
+	323, 324, 325, 335, 79, 80, 0, 0, 392, 509,
+	0, 529, 512, 567, 441, 448, 444, 0, 0, 623,
+	0, 244, 244, 602, 244, 248, 605, 244, 607, 244,
+	610, 0, 0, 0, 614, 576, 620, 0, 634, 452,
+	453, 455, 456, 457, 465, 0, 467, 0, 666, 0,
+	-2, 0, 661, 660, 37, 0, 44, 132, 173, 135,
+	136, 0, 303, 306, 307, 308, 0, 0, 304, 265,
+	0, 243, 0, 0, 87, 61, 62, 88, 97, 98,
+	99, 0, 315, 244, 0, 0, 0, 81, 82, 513,
+	0, 568, 571, 599, 271, 603, 604, 606, 608, 609,
+	611, 573, 572, 0, 0, 0, 618, 636, 0, 0,
+	0, 0, 0, 472, 0, 0, 475, 0, 0, 0,
+	0, 466, 0, 0, 486, 468, 0, 470, 471, 0,
+	656, 29, 0, 0, 58, 0, 0, 0, 0, 0,
+	266, 247, 250, 66, 0, 317, 70, 74, 322, 445,
+	600, 601, 592, 575, 615, 28, 0, 0, 454, 461,
+	0, 464, 473, 474, 476, 0, 478, 0, 480, 481,
+	458, 459, 460, 0, 0, 0, 469, 664, -2, 662,
+	0, 41, 0, 45, 298, 298, 0, 0, 76, 316,
+	76, 76, 0, 0, 0, 637, 635, 0, 0, 477,
+	479, 0, 0, 0, 0, 57, 0, 288, 289, 298,
+	0, 50, 67, 68, 69, 92, 0, 0, 51, 71,
+	72, 0, 52, 75, 574, 0, 0, 0, 462, 463,
+	0, 0, 0, 42, 0, 299, 92, 295, 0, 0,
+	290, 298, 0, 65, 63, 59, 60, 0, 593, 0,
+	596, 0, 490, 0, 0, 0, 0, 296, 0, 291,
+	64, 73, 594, 487, 0, 488, 489, 43, 294, 297,
+	0, 491, 0, 595,
 }
 var yyTok1 = [...]int{
 
@@ -2576,7 +2637,7 @@ var yyTok1 = [...]int{
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 87, 3, 3, 3, 114, 106, 3,
 	67, 69, 111, 109, 68, 110, 122, 112, 3, 3,
-	3, 3, 3, 3, 3, 3, 3, 3, 3, 309,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 310,
 	95, 94, 96, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 	3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
@@ -2621,7 +2682,8 @@ var yyTok3 = [...]int{
 	57615, 290, 57616, 291, 57617, 292, 57618, 293, 57619, 294,
 	57620, 295, 57621, 296, 57622, 297, 57623, 298, 57624, 299,
 	57625, 300, 57626, 301, 57627, 302, 57628, 303, 57629, 304,
-	57630, 305, 57631, 306, 57632, 307, 57633, 308, 0,
+	57630, 305, 57631, 306, 57632, 307, 57633, 308, 57634, 309,
+	0,
 }
 
 var yyErrorMessages = [...]struct {
@@ -2963,29 +3025,29 @@ yydefault:
 
 	case 1:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1052
+		//line sql.y:1055
 		{
 			setParseTree(yylex, yyDollar[1].statement)
 		}
 	case 2:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1058
+		//line sql.y:1061
 		{
 		}
 	case 3:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1060
+		//line sql.y:1063
 		{
 		}
 	case 4:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1064
+		//line sql.y:1067
 		{
 			yyVAL.statement = yyDollar[1].selStmt
 		}
-	case 24:
+	case 25:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1089
+		//line sql.y:1093
 		{
 			sel := yyDollar[1].selStmt.(*Select)
 			sel.OrderBy = yyDollar[2].orderBy
@@ -2993,51 +3055,51 @@ yydefault:
 			sel.Lock = yyDollar[4].str
 			yyVAL.selStmt = sel
 		}
-	case 25:
+	case 26:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1097
+		//line sql.y:1101
 		{
 			yyVAL.selStmt = &Union{Type: yyDollar[2].str, Left: yyDollar[1].selStmt, Right: yyDollar[3].selStmt, OrderBy: yyDollar[4].orderBy, Limit: yyDollar[5].limit, Lock: yyDollar[6].str}
 		}
-	case 26:
+	case 27:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1101
+		//line sql.y:1105
 		{
 			yyVAL.selStmt = &Select{Comments: Comments(yyDollar[2].bytes2), Cache: yyDollar[3].str, SelectExprs: SelectExprs{Nextval{Expr: yyDollar[5].expr}}, From: TableExprs{&AliasedTableExpr{Expr: yyDollar[7].tableName}}}
 		}
-	case 27:
+	case 28:
 		yyDollar = yyS[yypt-10 : yypt+1]
-		//line sql.y:1108
+		//line sql.y:1112
 		{
 			yyVAL.selStmt = &Select{Comments: Comments(yyDollar[2].bytes2), Cache: yyDollar[3].str, Distinct: yyDollar[4].str, Hints: yyDollar[5].str, SelectExprs: yyDollar[6].selectExprs, From: yyDollar[7].tableExprs, Where: NewWhere(WhereStr, yyDollar[8].expr), GroupBy: GroupBy(yyDollar[9].exprs), Having: NewWhere(HavingStr, yyDollar[10].expr)}
 		}
-	case 28:
+	case 29:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1114
+		//line sql.y:1118
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
-	case 29:
+	case 30:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1118
+		//line sql.y:1122
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
-	case 30:
+	case 31:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1124
+		//line sql.y:1128
 		{
 			yyVAL.selStmt = yyDollar[1].selStmt
 		}
-	case 31:
+	case 32:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1128
+		//line sql.y:1132
 		{
 			yyVAL.selStmt = &ParenSelect{Select: yyDollar[2].selStmt}
 		}
-	case 32:
+	case 33:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:1134
+		//line sql.y:1138
 		{
 			// insert_data returns a *Insert pre-filled with Columns & Values
 			ins := yyDollar[5].ins
@@ -3048,9 +3110,9 @@ yydefault:
 			ins.OnDup = OnDup(yyDollar[6].updateExprs)
 			yyVAL.statement = ins
 		}
-	case 33:
+	case 34:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1145
+		//line sql.y:1149
 		{
 			cols := make(Columns, 0, len(yyDollar[6].updateExprs))
 			vals := make(ValTuple, 0, len(yyDollar[7].updateExprs))
@@ -3060,69 +3122,69 @@ yydefault:
 			}
 			yyVAL.statement = &Insert{Action: yyDollar[1].str, Comments: Comments(yyDollar[2].bytes2), Ignore: yyDollar[3].str, Table: yyDollar[4].tableName, Columns: cols, Rows: Values{vals}, OnDup: OnDup(yyDollar[7].updateExprs)}
 		}
-	case 34:
+	case 35:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1157
+		//line sql.y:1161
 		{
 			yyVAL.str = InsertStr
 		}
-	case 35:
+	case 36:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1161
+		//line sql.y:1165
 		{
 			yyVAL.str = ReplaceStr
 		}
-	case 36:
+	case 37:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:1167
+		//line sql.y:1171
 		{
 			yyVAL.statement = &Update{Comments: Comments(yyDollar[2].bytes2), Table: yyDollar[3].tableName, Exprs: yyDollar[5].updateExprs, Where: NewWhere(WhereStr, yyDollar[6].expr), OrderBy: yyDollar[7].orderBy, Limit: yyDollar[8].limit}
 		}
-	case 37:
+	case 38:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1173
+		//line sql.y:1177
 		{
 			yyVAL.statement = &Delete{Comments: Comments(yyDollar[2].bytes2), Table: yyDollar[4].tableName, Where: NewWhere(WhereStr, yyDollar[5].expr), OrderBy: yyDollar[6].orderBy, Limit: yyDollar[7].limit}
 		}
-	case 38:
+	case 39:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1179
+		//line sql.y:1183
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Exprs: yyDollar[3].setExprs}
 		}
-	case 39:
+	case 40:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1183
+		//line sql.y:1187
 		{
 			yyVAL.statement = &Set{Comments: Comments(yyDollar[2].bytes2), Exprs: yyDollar[3].setExprs}
 		}
-	case 40:
+	case 41:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1189
+		//line sql.y:1193
 		{
 			yyVAL.partitionDefinitions = []*PartitionDefinition{yyDollar[1].partitionDefinition}
 		}
-	case 41:
+	case 42:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1193
+		//line sql.y:1197
 		{
 			yyVAL.partitionDefinitions = append(yyDollar[1].partitionDefinitions, yyDollar[3].partitionDefinition)
 		}
-	case 42:
+	case 43:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1199
+		//line sql.y:1203
 		{
 			yyVAL.partitionDefinition = &PartitionDefinition{Backend: string(yyDollar[2].bytes), Row: yyDollar[5].valTuple}
 		}
-	case 43:
+	case 44:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1205
+		//line sql.y:1209
 		{
 			yyVAL.optVal = nil
 		}
-	case 44:
+	case 45:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1209
+		//line sql.y:1213
 		{
 			if string(yyDollar[2].bytes) == "0" {
 				yylex.Error("Number of partitions must be a positive integer")
@@ -3130,30 +3192,30 @@ yydefault:
 			}
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
-	case 45:
+	case 46:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1219
+		//line sql.y:1223
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 46:
+	case 47:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1223
+		//line sql.y:1227
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 47:
+	case 48:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1229
+		//line sql.y:1233
 		{
 			yyDollar[1].ddl.Action = CreateTableStr
 			yyDollar[1].ddl.TableSpec = yyDollar[2].tableSpec
 			yyDollar[1].ddl.PartitionOption = yyDollar[3].partitionOption
 			yyVAL.statement = yyDollar[1].ddl
 		}
-	case 48:
+	case 49:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1236
+		//line sql.y:1240
 		{
 			var ifnotexists bool
 			if yyDollar[3].byt != 0 {
@@ -3161,230 +3223,230 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: CreateDBStr, IfNotExists: ifnotexists, Database: yyDollar[4].tableIdent, DatabaseOptions: yyDollar[5].databaseOptionListOpt}
 		}
-	case 49:
+	case 50:
 		yyDollar = yyS[yypt-11 : yypt+1]
-		//line sql.y:1244
+		//line sql.y:1248
 		{
 			yyVAL.statement = &DDL{Action: CreateIndexStr, IndexType: yyDollar[2].str, IndexName: string(yyDollar[4].bytes), Table: yyDollar[6].tableName, NewName: yyDollar[6].tableName, IndexOpts: NewIndexOptions(yyDollar[8].indexColumns, yyDollar[10].indexOptionList), indexLockAndAlgorithm: yyDollar[11].indexLockAndAlgorithm}
 		}
-	case 50:
+	case 51:
 		yyDollar = yyS[yypt-11 : yypt+1]
-		//line sql.y:1248
+		//line sql.y:1252
 		{
 			yyVAL.statement = &DDL{Action: CreateIndexStr, IndexType: FullTextStr, IndexName: string(yyDollar[4].bytes), Table: yyDollar[6].tableName, NewName: yyDollar[6].tableName, IndexOpts: NewIndexOptions(yyDollar[8].indexColumns, yyDollar[10].indexOptionList), indexLockAndAlgorithm: yyDollar[11].indexLockAndAlgorithm}
 		}
-	case 51:
+	case 52:
 		yyDollar = yyS[yypt-11 : yypt+1]
-		//line sql.y:1252
+		//line sql.y:1256
 		{
 			yyVAL.statement = &DDL{Action: CreateIndexStr, IndexType: SpatialStr, IndexName: string(yyDollar[4].bytes), Table: yyDollar[6].tableName, NewName: yyDollar[6].tableName, IndexOpts: NewIndexOptions(yyDollar[8].indexColumns, yyDollar[10].indexOptionList), indexLockAndAlgorithm: yyDollar[11].indexLockAndAlgorithm}
 		}
-	case 52:
+	case 53:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1258
+		//line sql.y:1262
 		{
 			yyVAL.partitionOption = &PartOptNormal{}
 		}
-	case 53:
+	case 54:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1262
+		//line sql.y:1266
 		{
 			yyVAL.partitionOption = &PartOptGlobal{}
 		}
-	case 54:
+	case 55:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1266
+		//line sql.y:1270
 		{
 			yyVAL.partitionOption = &PartOptSingle{}
 		}
-	case 55:
+	case 56:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:1270
+		//line sql.y:1274
 		{
 			yyVAL.partitionOption = &PartOptSingle{
 				BackendName: yyDollar[4].colIdent.String(),
 			}
 		}
-	case 56:
+	case 57:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:1276
+		//line sql.y:1280
 		{
 			yyVAL.partitionOption = &PartOptList{
 				Name:     yyDollar[5].colIdent.String(),
 				PartDefs: yyDollar[8].partitionDefinitions,
 			}
 		}
-	case 57:
+	case 58:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:1283
+		//line sql.y:1287
 		{
 			yyVAL.partitionOption = &PartOptHash{
 				Name:         yyDollar[5].colIdent.String(),
 				PartitionNum: yyDollar[7].optVal,
 			}
 		}
-	case 58:
+	case 59:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1292
+		//line sql.y:1296
 		{
 			yyVAL.str = "hash"
 		}
-	case 59:
+	case 60:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1296
+		//line sql.y:1300
 		{
 			yyVAL.str = "btree"
 		}
-	case 60:
+	case 61:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1302
+		//line sql.y:1306
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 61:
+	case 62:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1306
+		//line sql.y:1310
 		{
 			yyVAL.str = "default"
 		}
-	case 62:
+	case 63:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1313
+		//line sql.y:1317
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionUsing,
 				Val:  NewStrValWithoutQuote([]byte(yyDollar[2].str)),
 			}
 		}
-	case 63:
+	case 64:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1322
+		//line sql.y:1326
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionBlockSize,
 				Val:  NewIntVal(yyDollar[3].bytes),
 			}
 		}
-	case 64:
+	case 65:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1329
+		//line sql.y:1333
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionComment,
 				Val:  NewStrVal(yyDollar[2].bytes),
 			}
 		}
-	case 65:
+	case 66:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1337
+		//line sql.y:1341
 		{
 			yyVAL.indexOptionList = []*IndexOption{}
 		}
-	case 66:
+	case 67:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1341
+		//line sql.y:1345
 		{
 			yyVAL.indexOptionList = append(yyDollar[1].indexOptionList, yyDollar[2].indexOption)
 		}
-	case 67:
+	case 68:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1347
+		//line sql.y:1351
 		{
 			yyVAL.indexOption = yyDollar[1].indexOption
 		}
-	case 68:
+	case 69:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1351
+		//line sql.y:1355
 		{
 			yyVAL.indexOption = yyDollar[1].indexOption
 		}
-	case 69:
+	case 70:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1356
+		//line sql.y:1360
 		{
 			yyVAL.indexOptionList = []*IndexOption{}
 		}
-	case 70:
+	case 71:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1360
+		//line sql.y:1364
 		{
 			yyVAL.indexOptionList = append(yyDollar[1].indexOptionList, yyDollar[2].indexOption)
 		}
-	case 71:
+	case 72:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1366
+		//line sql.y:1370
 		{
 			yyVAL.indexOption = yyDollar[1].indexOption
 		}
-	case 72:
+	case 73:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1370
+		//line sql.y:1374
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionParser,
 				Val:  NewStrValWithoutQuote(yyDollar[3].bytes),
 			}
 		}
-	case 73:
+	case 74:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1378
+		//line sql.y:1382
 		{
 			yyVAL.indexOptionList = []*IndexOption{}
 		}
-	case 74:
+	case 75:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1382
+		//line sql.y:1386
 		{
 			yyVAL.indexOptionList = append(yyDollar[1].indexOptionList, yyDollar[2].indexOption)
 		}
-	case 75:
+	case 76:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1387
+		//line sql.y:1391
 		{
 			yyVAL.indexLockAndAlgorithm = &IndexLockAndAlgorithm{
 				LockOption:      LockOptionEmpty,
 				AlgorithmOption: AlgorithmOptionEmpty,
 			}
 		}
-	case 76:
+	case 77:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1394
+		//line sql.y:1398
 		{
 			yyVAL.indexLockAndAlgorithm = &IndexLockAndAlgorithm{
 				LockOption:      yyDollar[1].lockOptionType,
 				AlgorithmOption: AlgorithmOptionEmpty,
 			}
 		}
-	case 77:
+	case 78:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1401
+		//line sql.y:1405
 		{
 			yyVAL.indexLockAndAlgorithm = &IndexLockAndAlgorithm{
 				LockOption:      LockOptionEmpty,
 				AlgorithmOption: yyDollar[1].algorithmOptionType,
 			}
 		}
-	case 78:
+	case 79:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1408
+		//line sql.y:1412
 		{
 			yyVAL.indexLockAndAlgorithm = &IndexLockAndAlgorithm{
 				LockOption:      yyDollar[1].lockOptionType,
 				AlgorithmOption: yyDollar[2].algorithmOptionType,
 			}
 		}
-	case 79:
+	case 80:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1415
+		//line sql.y:1419
 		{
 			yyVAL.indexLockAndAlgorithm = &IndexLockAndAlgorithm{
 				LockOption:      yyDollar[2].lockOptionType,
 				AlgorithmOption: yyDollar[1].algorithmOptionType,
 			}
 		}
-	case 80:
+	case 81:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1424
+		//line sql.y:1428
 		{
 			switch StrToLower(yyDollar[3].str) {
 			case "none":
@@ -3400,9 +3462,9 @@ yydefault:
 				return 1
 			}
 		}
-	case 81:
+	case 82:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1442
+		//line sql.y:1446
 		{
 			switch StrToLower(yyDollar[3].str) {
 			case "default":
@@ -3418,100 +3480,94 @@ yydefault:
 				return 1
 			}
 		}
-	case 82:
+	case 83:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1459
+		//line sql.y:1463
 		{
 			yyVAL.databaseOptionListOpt.DBOptList = []*DatabaseOption{}
 		}
-	case 83:
+	case 84:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1463
+		//line sql.y:1467
 		{
 			yyVAL.databaseOptionListOpt.DBOptList = yyDollar[1].databaseOptionList
 		}
-	case 84:
+	case 85:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1469
+		//line sql.y:1473
 		{
 			yyVAL.databaseOptionList = append(yyVAL.databaseOptionList, yyDollar[1].databaseOption)
 		}
-	case 85:
+	case 86:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1473
+		//line sql.y:1477
 		{
 			yyVAL.databaseOptionList = append(yyDollar[1].databaseOptionList, yyDollar[2].databaseOption)
 		}
-	case 86:
+	case 87:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1482
+		//line sql.y:1486
 		{
 			yyVAL.databaseOption = &DatabaseOption{
 				OptType: string(yyDollar[2].bytes),
 				Value:   NewStrValWithoutQuote([]byte(yyDollar[4].str)),
 			}
 		}
-	case 87:
+	case 88:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1489
+		//line sql.y:1493
 		{
 			yyVAL.databaseOption = &DatabaseOption{
 				OptType: string(yyDollar[2].str),
 				Value:   NewStrValWithoutQuote([]byte(yyDollar[4].str)),
 			}
 		}
-	case 88:
+	case 89:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1496
+		//line sql.y:1500
 		{
 			yyVAL.databaseOption = &DatabaseOption{
 				OptType: "encryption",
 				Value:   yyDollar[2].optVal,
 			}
 		}
-	case 89:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1504
-		{
-		}
 	case 90:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1506
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:1508
 		{
 		}
 	case 91:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1509
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:1510
 		{
 		}
 	case 92:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1511
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:1513
 		{
 		}
 	case 93:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:1515
 		{
-			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 94:
-		yyDollar = yyS[yypt-2 : yypt+1]
+		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:1519
 		{
-			yyVAL.str = "character set"
+			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 95:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:1523
 		{
-			yyVAL.str = "char set"
+			yyVAL.str = "character set"
 		}
 	case 96:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1529
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:1527
 		{
-			yyVAL.str = string(yyDollar[1].bytes)
+			yyVAL.str = "char set"
 		}
 	case 97:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -3523,11 +3579,17 @@ yydefault:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:1537
 		{
-			yyVAL.str = "default"
+			yyVAL.str = string(yyDollar[1].bytes)
 		}
 	case 99:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:1541
+		{
+			yyVAL.str = "default"
+		}
+	case 100:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1543
+		//line sql.y:1547
 		{
 			var ifnotexists bool
 			if yyDollar[3].byt != 0 {
@@ -3536,9 +3598,9 @@ yydefault:
 			yyVAL.ddl = &DDL{Action: CreateTableStr, IfNotExists: ifnotexists, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 			setDDL(yylex, yyVAL.ddl)
 		}
-	case 100:
+	case 101:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1554
+		//line sql.y:1558
 		{
 			yyVAL.tableSpec = yyDollar[2].tableSpec
 
@@ -3618,266 +3680,266 @@ yydefault:
 				}
 			}
 		}
-	case 101:
+	case 102:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:1635
+		//line sql.y:1639
 		{
 			yyVAL.tableOptionListOpt.TblOptList = []*TableOption{}
 		}
-	case 102:
+	case 103:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1639
+		//line sql.y:1643
 		{
 			yyVAL.tableOptionListOpt.TblOptList = yyDollar[1].tableOptionList
 		}
-	case 103:
+	case 104:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1645
+		//line sql.y:1649
 		{
 			yyVAL.tableOptionList = append(yyVAL.tableOptionList, yyDollar[1].tableOption)
 		}
-	case 104:
+	case 105:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:1649
+		//line sql.y:1653
 		{
 			yyVAL.tableOptionList = append(yyDollar[1].tableOptionList, yyDollar[2].tableOption)
 		}
-	case 105:
+	case 106:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1655
+		//line sql.y:1659
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionComment,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 106:
+	case 107:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1662
+		//line sql.y:1666
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionEngine,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 107:
+	case 108:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1669
+		//line sql.y:1673
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionCharset,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 108:
+	case 109:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1676
+		//line sql.y:1680
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionAutoInc,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 109:
+	case 110:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1683
+		//line sql.y:1687
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionAvgRowLength,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 110:
+	case 111:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1690
+		//line sql.y:1694
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionChecksum,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 111:
+	case 112:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1697
+		//line sql.y:1701
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionCollate,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 112:
+	case 113:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1704
+		//line sql.y:1708
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionCompression,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 113:
+	case 114:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1711
+		//line sql.y:1715
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionConnection,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 114:
+	case 115:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1718
+		//line sql.y:1722
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionDataDirectory,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 115:
+	case 116:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1725
+		//line sql.y:1729
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionIndexDirectory,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 116:
+	case 117:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1732
+		//line sql.y:1736
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionDelayKeyWrite,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 117:
+	case 118:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1739
+		//line sql.y:1743
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionEncryption,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 118:
+	case 119:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1746
+		//line sql.y:1750
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionInsertMethod,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 119:
+	case 120:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1753
+		//line sql.y:1757
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionKeyBlockSize,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 120:
+	case 121:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1760
+		//line sql.y:1764
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionMaxRows,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 121:
+	case 122:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1767
+		//line sql.y:1771
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionMinRows,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 122:
+	case 123:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1774
+		//line sql.y:1778
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionPackKeys,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 123:
+	case 124:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1781
+		//line sql.y:1785
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionPassword,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 124:
+	case 125:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1788
+		//line sql.y:1792
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionRowFormat,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 125:
+	case 126:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1795
+		//line sql.y:1799
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionStatsAutoRecalc,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 126:
+	case 127:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1802
+		//line sql.y:1806
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionStatsPersistent,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 127:
+	case 128:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1809
+		//line sql.y:1813
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionStatsSamplePages,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 128:
+	case 129:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:1816
+		//line sql.y:1820
 		{
 			yyVAL.tableOption = &TableOption{
 				Type: TableOptionTableSpace,
 				Val:  yyDollar[1].optVal,
 			}
 		}
-	case 129:
+	case 130:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1825
+		//line sql.y:1829
 		{
 		}
-	case 130:
+	case 131:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1829
+		//line sql.y:1833
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
 		}
-	case 131:
+	case 132:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1835
+		//line sql.y:1839
 		{
 			yyVAL.optVal = yyDollar[4].optVal
 		}
-	case 132:
+	case 133:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1841
+		//line sql.y:1845
 		{
 			switch StrToLower(string(yyDollar[3].bytes)) {
 			case "zlib", "lz4", "none":
@@ -3888,33 +3950,33 @@ yydefault:
 			}
 			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
 		}
-	case 133:
+	case 134:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1854
+		//line sql.y:1858
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
 		}
-	case 134:
+	case 135:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1860
+		//line sql.y:1864
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[4].bytes)
 		}
-	case 135:
+	case 136:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:1866
+		//line sql.y:1870
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[4].bytes)
 		}
-	case 136:
+	case 137:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1872
+		//line sql.y:1876
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
 		}
-	case 137:
+	case 138:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1878
+		//line sql.y:1882
 		{
 			switch string(yyDollar[3].bytes) {
 			case "Y", "y":
@@ -3928,9 +3990,9 @@ yydefault:
 			}
 			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
 		}
-	case 138:
+	case 139:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1894
+		//line sql.y:1898
 		{
 			switch StrToLower(string(yyDollar[3].bytes)) {
 			case "no", "first", "last":
@@ -3941,29 +4003,23 @@ yydefault:
 			}
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
-	case 139:
-		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1907
-		{
-			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
-		}
 	case 140:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1913
+		//line sql.y:1911
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
 		}
 	case 141:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1919
+		//line sql.y:1917
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
 		}
 	case 142:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1925
+		//line sql.y:1923
 		{
-			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
+			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
 		}
 	case 143:
 		yyDollar = yyS[yypt-3 : yypt+1]
@@ -3973,15 +4029,15 @@ yydefault:
 		}
 	case 144:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1935
+		//line sql.y:1933
 		{
-			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
+			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
 	case 145:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:1943
+		//line sql.y:1939
 		{
-			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
+			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
 		}
 	case 146:
 		yyDollar = yyS[yypt-3 : yypt+1]
@@ -4063,7 +4119,7 @@ yydefault:
 		}
 	case 159:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2001
+		//line sql.y:1999
 		{
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
@@ -4075,7 +4131,7 @@ yydefault:
 		}
 	case 161:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2011
+		//line sql.y:2009
 		{
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
@@ -4087,7 +4143,7 @@ yydefault:
 		}
 	case 163:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2022
+		//line sql.y:2019
 		{
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
@@ -4099,7 +4155,7 @@ yydefault:
 		}
 	case 165:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2032
+		//line sql.y:2030
 		{
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
@@ -4111,64 +4167,70 @@ yydefault:
 		}
 	case 167:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2042
+		//line sql.y:2040
 		{
-			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
+			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[3].bytes)
 		}
 	case 168:
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:2046
+		{
+			yyVAL.optVal = NewIntVal(yyDollar[3].bytes)
+		}
+	case 169:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2048
+		//line sql.y:2052
 		{
 			// Normal str as an identify, without quote
 			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[1].bytes)
 		}
-	case 169:
+	case 170:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2053
+		//line sql.y:2057
 		{
 			// Str with Quote, it will be parsed by Lex begin with quote \' or \"
 			yyVAL.optVal = NewStrVal(yyDollar[1].bytes)
 		}
-	case 170:
+	case 171:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2060
+		//line sql.y:2064
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[3].bytes)
 		}
-	case 171:
+	case 172:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2066
+		//line sql.y:2070
 		{
 			yyVAL.optVal = yyDollar[3].optVal
 		}
-	case 172:
+	case 173:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2072
+		//line sql.y:2076
 		{
 			yyVAL.optVal = yyDollar[4].optVal
 		}
-	case 173:
+	case 174:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2078
+		//line sql.y:2082
 		{
 			yyVAL.tableSpec = &TableSpec{}
 			yyVAL.tableSpec.AddColumn(yyDollar[1].columnDefinition)
 		}
-	case 174:
+	case 175:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2083
+		//line sql.y:2087
 		{
 			yyVAL.tableSpec.AddColumn(yyDollar[3].columnDefinition)
 		}
-	case 175:
+	case 176:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2087
+		//line sql.y:2091
 		{
 			yyVAL.tableSpec.AddIndex(yyDollar[3].indexDefinition)
 		}
-	case 176:
+	case 177:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2093
+		//line sql.y:2097
 		{
 			yyDollar[2].columnType.NotNull = yyDollar[3].columnOptionListOpt.GetColumnOption(ColumnOptionNotNull).NotNull
 			yyDollar[2].columnType.Autoincrement = yyDollar[3].columnOptionListOpt.GetColumnOption(ColumnOptionAutoincrement).Autoincrement
@@ -4182,158 +4244,152 @@ yydefault:
 			yyDollar[2].columnType.Storage = yyDollar[3].columnOptionListOpt.GetColumnOption(ColumnOptionStorage).Storage
 			yyVAL.columnDefinition = &ColumnDefinition{Name: yyDollar[1].colIdent, Type: yyDollar[2].columnType}
 		}
-	case 177:
+	case 178:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2109
+		//line sql.y:2113
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 178:
+	case 179:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2113
+		//line sql.y:2117
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 179:
+	case 180:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2119
+		//line sql.y:2123
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Unsigned = yyDollar[2].boolVal
 			yyVAL.columnType.Zerofill = yyDollar[3].boolVal
 		}
-	case 183:
+	case 184:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2129
+		//line sql.y:2133
 		{
 			yyVAL.columnOptionListOpt.ColOptList = []*ColumnOption{}
 		}
-	case 184:
+	case 185:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2133
+		//line sql.y:2137
 		{
 			yyVAL.columnOptionListOpt.ColOptList = yyDollar[1].columnOptionList
 		}
-	case 185:
+	case 186:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2139
+		//line sql.y:2143
 		{
 			yyVAL.columnOptionList = append(yyVAL.columnOptionList, yyDollar[1].columnOption)
 		}
-	case 186:
+	case 187:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2143
+		//line sql.y:2147
 		{
 			yyVAL.columnOptionList = append(yyDollar[1].columnOptionList, yyDollar[2].columnOption)
 		}
-	case 187:
+	case 188:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2149
+		//line sql.y:2153
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:     ColumnOptionNotNull,
 				NotNull: yyDollar[1].boolVal,
 			}
 		}
-	case 188:
+	case 189:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2156
+		//line sql.y:2160
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:     ColumnOptionDefault,
 				Default: yyDollar[1].optVal,
 			}
 		}
-	case 189:
+	case 190:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2163
+		//line sql.y:2167
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:           ColumnOptionAutoincrement,
 				Autoincrement: yyDollar[1].boolVal,
 			}
 		}
-	case 190:
+	case 191:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2170
+		//line sql.y:2174
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:           ColumnOptionKeyPrimaryOpt,
 				PrimaryKeyOpt: yyDollar[1].colPrimaryKeyOpt,
 			}
 		}
-	case 191:
+	case 192:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2177
+		//line sql.y:2181
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:          ColumnOptionKeyUniqueOpt,
 				UniqueKeyOpt: yyDollar[1].colUniqueKeyOpt,
 			}
 		}
-	case 192:
+	case 193:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2184
+		//line sql.y:2188
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:     ColumnOptionComment,
 				Comment: yyDollar[1].optVal,
 			}
 		}
-	case 193:
+	case 194:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2191
+		//line sql.y:2195
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:      ColumnOptionOnUpdate,
 				OnUpdate: yyDollar[1].str,
 			}
 		}
-	case 194:
+	case 195:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2198
+		//line sql.y:2202
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:     ColumnOptionCollate,
 				Collate: yyDollar[1].optVal,
 			}
 		}
-	case 195:
+	case 196:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2205
+		//line sql.y:2209
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:          ColumnOptionFormat,
 				ColumnFormat: yyDollar[1].str,
 			}
 		}
-	case 196:
+	case 197:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2212
+		//line sql.y:2216
 		{
 			yyVAL.columnOption = &ColumnOption{
 				typ:     ColumnOptionStorage,
 				Storage: yyDollar[1].str,
 			}
 		}
-	case 197:
+	case 198:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2221
+		//line sql.y:2225
 		{
 			yyVAL.columnType = yyDollar[1].columnType
 			yyVAL.columnType.Length = yyDollar[2].optVal
 		}
-	case 198:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2226
-		{
-			yyVAL.columnType = yyDollar[1].columnType
-		}
 	case 199:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2232
+		//line sql.y:2230
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+			yyVAL.columnType = yyDollar[1].columnType
 		}
 	case 200:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -4384,16 +4440,14 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 208:
-		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2270
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2268
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
-			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
-			yyVAL.columnType.Scale = yyDollar[2].lengthScaleOption.Scale
 		}
 	case 209:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2276
+		//line sql.y:2274
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
@@ -4401,7 +4455,7 @@ yydefault:
 		}
 	case 210:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2282
+		//line sql.y:2280
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
@@ -4409,7 +4463,7 @@ yydefault:
 		}
 	case 211:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2288
+		//line sql.y:2286
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
@@ -4417,23 +4471,25 @@ yydefault:
 		}
 	case 212:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2294
+		//line sql.y:2292
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
 			yyVAL.columnType.Scale = yyDollar[2].lengthScaleOption.Scale
 		}
 	case 213:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2302
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:2298
 		{
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+			yyVAL.columnType.Length = yyDollar[2].lengthScaleOption.Length
+			yyVAL.columnType.Scale = yyDollar[2].lengthScaleOption.Scale
 		}
 	case 214:
-		yyDollar = yyS[yypt-2 : yypt+1]
+		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2306
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 215:
 		yyDollar = yyS[yypt-2 : yypt+1]
@@ -4448,16 +4504,16 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 217:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2318
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 218:
-		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2324
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2322
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 219:
 		yyDollar = yyS[yypt-3 : yypt+1]
@@ -4466,10 +4522,10 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str}
 		}
 	case 220:
-		yyDollar = yyS[yypt-2 : yypt+1]
+		yyDollar = yyS[yypt-3 : yypt+1]
 		//line sql.y:2332
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str}
 		}
 	case 221:
 		yyDollar = yyS[yypt-2 : yypt+1]
@@ -4481,7 +4537,7 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2340
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
 	case 223:
 		yyDollar = yyS[yypt-2 : yypt+1]
@@ -4502,10 +4558,10 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str}
 		}
 	case 226:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2356
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), Charset: yyDollar[2].str}
 		}
 	case 227:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -4532,10 +4588,10 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 231:
-		yyDollar = yyS[yypt-4 : yypt+1]
+		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2376
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
 		}
 	case 232:
 		yyDollar = yyS[yypt-4 : yypt+1]
@@ -4544,10 +4600,10 @@ yydefault:
 			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs}
 		}
 	case 233:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2386
+		yyDollar = yyS[yypt-4 : yypt+1]
+		//line sql.y:2384
 		{
-			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes), EnumValues: yyDollar[3].strs}
 		}
 	case 234:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -4593,136 +4649,142 @@ yydefault:
 		}
 	case 241:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2420
+		//line sql.y:2418
+		{
+			yyVAL.columnType = ColumnType{Type: string(yyDollar[1].bytes)}
+		}
+	case 242:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2424
 		{
 			yyVAL.strs = make([]string, 0, 4)
 			yyVAL.strs = append(yyVAL.strs, "'"+string(yyDollar[1].bytes)+"'")
 		}
-	case 242:
+	case 243:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2425
+		//line sql.y:2429
 		{
 			yyVAL.strs = append(yyDollar[1].strs, "'"+string(yyDollar[3].bytes)+"'")
 		}
-	case 243:
+	case 244:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2430
+		//line sql.y:2434
 		{
 			yyVAL.optVal = nil
 		}
-	case 244:
+	case 245:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2434
+		//line sql.y:2438
 		{
 			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
-	case 245:
+	case 246:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2439
+		//line sql.y:2443
 		{
 			yyVAL.lengthScaleOption = LengthScaleOption{}
 		}
-	case 246:
+	case 247:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2443
+		//line sql.y:2447
 		{
 			yyVAL.lengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 				Scale:  NewIntVal(yyDollar[4].bytes),
 			}
 		}
-	case 247:
+	case 248:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2451
+		//line sql.y:2455
 		{
 			yyVAL.lengthScaleOption = LengthScaleOption{}
 		}
-	case 248:
+	case 249:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2455
+		//line sql.y:2459
 		{
 			yyVAL.lengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 			}
 		}
-	case 249:
+	case 250:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:2461
+		//line sql.y:2465
 		{
 			yyVAL.lengthScaleOption = LengthScaleOption{
 				Length: NewIntVal(yyDollar[2].bytes),
 				Scale:  NewIntVal(yyDollar[4].bytes),
 			}
 		}
-	case 250:
+	case 251:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2469
+		//line sql.y:2473
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 251:
+	case 252:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2473
+		//line sql.y:2477
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 252:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2478
-		{
-			yyVAL.boolVal = BoolVal(false)
-		}
 	case 253:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-0 : yypt+1]
 		//line sql.y:2482
 		{
-			yyVAL.boolVal = BoolVal(true)
+			yyVAL.boolVal = BoolVal(false)
 		}
 	case 254:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2489
+		//line sql.y:2486
 		{
-			yyVAL.boolVal = BoolVal(false)
+			yyVAL.boolVal = BoolVal(true)
 		}
 	case 255:
-		yyDollar = yyS[yypt-2 : yypt+1]
+		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2493
 		{
-			yyVAL.boolVal = BoolVal(true)
+			yyVAL.boolVal = BoolVal(false)
 		}
 	case 256:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2499
+		//line sql.y:2497
 		{
-			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
+			yyVAL.boolVal = BoolVal(true)
 		}
 	case 257:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2503
 		{
-			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
+			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
 	case 258:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2507
 		{
-			yyVAL.optVal = NewFloatVal(yyDollar[2].bytes)
+			yyVAL.optVal = NewIntVal(yyDollar[2].bytes)
 		}
 	case 259:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2511
 		{
-			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
+			yyVAL.optVal = NewFloatVal(yyDollar[2].bytes)
 		}
 	case 260:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2515
 		{
-			yyVAL.optVal = NewStrValWithoutQuote([]byte(yyDollar[2].str))
+			yyVAL.optVal = NewValArg(yyDollar[2].bytes)
 		}
 	case 261:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2519
+		{
+			yyVAL.optVal = NewStrValWithoutQuote([]byte(yyDollar[2].str))
+		}
+	case 262:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:2523
 		{
 			if yyDollar[2].boolVal {
 				yyVAL.optVal = NewStrValWithoutQuote([]byte("true"))
@@ -4730,36 +4792,30 @@ yydefault:
 				yyVAL.optVal = NewStrValWithoutQuote([]byte("false"))
 			}
 		}
-	case 262:
+	case 263:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2529
+		//line sql.y:2533
 		{
 			yyVAL.str = yyDollar[3].str
 		}
-	case 263:
+	case 264:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2535
+		//line sql.y:2539
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 264:
+	case 265:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2539
+		//line sql.y:2543
 		{
 			yyVAL.str = string(yyDollar[1].bytes) + "(" + ")"
 		}
-	case 265:
+	case 266:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2543
+		//line sql.y:2547
 		{
 			yyVAL.str = string(yyDollar[1].bytes) + "(" + string(yyDollar[3].bytes) + ")"
 		}
-	case 266:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2551
-		{
-			yyVAL.bytes = yyDollar[1].bytes
-		}
 	case 267:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2555
@@ -4774,21 +4830,21 @@ yydefault:
 		}
 	case 269:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2566
+		//line sql.y:2563
 		{
-			yyVAL.boolVal = BoolVal(true)
+			yyVAL.bytes = yyDollar[1].bytes
 		}
 	case 270:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2571
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2570
 		{
-			yyVAL.str = ""
+			yyVAL.boolVal = BoolVal(true)
 		}
 	case 271:
-		yyDollar = yyS[yypt-3 : yypt+1]
+		yyDollar = yyS[yypt-0 : yypt+1]
 		//line sql.y:2575
 		{
-			yyVAL.str = string(yyDollar[3].bytes)
+			yyVAL.str = ""
 		}
 	case 272:
 		yyDollar = yyS[yypt-3 : yypt+1]
@@ -4797,26 +4853,26 @@ yydefault:
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
 	case 273:
-		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2586
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:2583
 		{
-			yyVAL.optVal = yyDollar[2].optVal
+			yyVAL.str = string(yyDollar[3].bytes)
 		}
 	case 274:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2591
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:2590
 		{
-			yyVAL.str = ""
+			yyVAL.optVal = yyDollar[2].optVal
 		}
 	case 275:
-		yyDollar = yyS[yypt-2 : yypt+1]
+		yyDollar = yyS[yypt-0 : yypt+1]
 		//line sql.y:2595
 		{
-			yyVAL.str = string(yyDollar[2].bytes)
+			yyVAL.str = ""
 		}
 	case 276:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2601
+		//line sql.y:2599
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
@@ -4834,16 +4890,16 @@ yydefault:
 		}
 	case 279:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2615
+		//line sql.y:2613
 		{
-			// "default" is not in official doc: https://dev.mysql.com/doc/refman/5.7/en/create-table.html
-			// but actually mysql support it, see: https://github.com/mysql/mysql-server/blob/5.7/sql/sql_yacc.yy#L6953
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
 	case 280:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2621
+		//line sql.y:2619
 		{
+			// "default" is not in official doc: https://dev.mysql.com/doc/refman/5.7/en/create-table.html
+			// but actually mysql support it, see: https://github.com/mysql/mysql-server/blob/5.7/sql/sql_yacc.yy#L6953
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
 	case 281:
@@ -4854,40 +4910,46 @@ yydefault:
 		}
 	case 282:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2631
+		//line sql.y:2629
 		{
-			yyVAL.colPrimaryKeyOpt = ColKeyPrimary
+			yyVAL.str = string(yyDollar[2].bytes)
 		}
 	case 283:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-2 : yypt+1]
 		//line sql.y:2635
+		{
+			yyVAL.colPrimaryKeyOpt = ColKeyPrimary
+		}
+	case 284:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2639
 		{
 			// KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY
 			// can also be specified as just KEY when given in a column definition.
 			// See http://dev.mysql.com/doc/refman/5.7/en/create-table.html
 			yyVAL.colPrimaryKeyOpt = ColKeyPrimary
 		}
-	case 284:
+	case 285:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2644
+		//line sql.y:2648
 		{
 			yyVAL.colUniqueKeyOpt = ColKeyUniqueKey
 		}
-	case 285:
+	case 286:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2648
+		//line sql.y:2652
 		{
 			yyVAL.colUniqueKeyOpt = ColKeyUniqueKey
 		}
-	case 286:
+	case 287:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2654
+		//line sql.y:2658
 		{
 			yyVAL.optVal = NewStrVal(yyDollar[2].bytes)
 		}
-	case 287:
+	case 288:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2660
+		//line sql.y:2664
 		{
 			// TODO(): in the future we'll support format out index_type, currently skip it.
 			// If index_name is empty, becarful that the `name` result will be diffirent when doing format.
@@ -4899,9 +4961,9 @@ yydefault:
 				Unique:  false,
 			}
 		}
-	case 288:
+	case 289:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2672
+		//line sql.y:2676
 		{
 			typ := string(yyDollar[1].bytes)
 			if yyDollar[3].str != "" {
@@ -4915,9 +4977,9 @@ yydefault:
 				Unique:  false,
 			}
 		}
-	case 289:
+	case 290:
 		yyDollar = yyS[yypt-8 : yypt+1]
-		//line sql.y:2686
+		//line sql.y:2690
 		{
 			// TODO(): in the future we'll support format out index_type, currently skip it
 			yyVAL.indexDefinition = &IndexDefinition{
@@ -4928,9 +4990,9 @@ yydefault:
 				Unique:  true,
 			}
 		}
-	case 290:
+	case 291:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:2697
+		//line sql.y:2701
 		{
 			// TODO(): in the future we'll support format out index_type, currently skip it
 			typ := string(yyDollar[2].bytes)
@@ -4945,101 +5007,95 @@ yydefault:
 				Unique:  true,
 			}
 		}
-	case 291:
+	case 292:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2713
+		//line sql.y:2717
 		{
 			yyVAL.str = ""
 		}
-	case 292:
+	case 293:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2717
+		//line sql.y:2721
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 293:
+	case 294:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2723
+		//line sql.y:2727
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionBlockSize,
 				Val:  NewIntVal(yyDollar[3].bytes),
 			}
 		}
-	case 294:
+	case 295:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2730
+		//line sql.y:2734
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionUsing,
 				Val:  NewStrValWithoutQuote(yyDollar[1].bytes),
 			}
 		}
-	case 295:
+	case 296:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2737
+		//line sql.y:2741
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionComment,
 				Val:  NewStrVal(yyDollar[2].bytes),
 			}
 		}
-	case 296:
+	case 297:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2744
+		//line sql.y:2748
 		{
 			yyVAL.indexOption = &IndexOption{
 				Type: IndexOptionParser,
 				Val:  NewStrValWithoutQuote(yyDollar[3].bytes),
 			}
 		}
-	case 297:
+	case 298:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2752
+		//line sql.y:2756
 		{
 			yyVAL.indexOptionList = []*IndexOption{}
 		}
-	case 298:
+	case 299:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2756
+		//line sql.y:2760
 		{
 			yyVAL.indexOptionList = append(yyDollar[1].indexOptionList, yyDollar[2].indexOption)
 		}
-	case 299:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2762
-		{
-		}
 	case 300:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2765
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:2766
 		{
 		}
 	case 301:
-		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2768
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2769
 		{
 		}
 	case 302:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2774
+		//line sql.y:2772
 		{
-			yyVAL.bytes = yyDollar[2].bytes
 		}
 	case 303:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2779
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:2778
 		{
+			yyVAL.bytes = yyDollar[2].bytes
 		}
 	case 304:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2782
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:2783
 		{
-			yyVAL.bytes = yyDollar[1].bytes
 		}
 	case 305:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2788
+		//line sql.y:2786
 		{
 			yyVAL.bytes = yyDollar[1].bytes
 		}
@@ -5057,7 +5113,7 @@ yydefault:
 		}
 	case 308:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2802
+		//line sql.y:2800
 		{
 			yyVAL.bytes = yyDollar[1].bytes
 		}
@@ -5068,128 +5124,134 @@ yydefault:
 			yyVAL.bytes = yyDollar[1].bytes
 		}
 	case 310:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2810
+		{
+			yyVAL.bytes = yyDollar[1].bytes
+		}
+	case 311:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2811
+		//line sql.y:2815
 		{
 			// set empty
 			yyVAL.str = ""
 		}
-	case 311:
+	case 312:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2816
+		//line sql.y:2820
 		{
 			yyVAL.str = yyDollar[1].str
 		}
-	case 312:
+	case 313:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2823
+		//line sql.y:2827
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 313:
+	case 314:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2827
+		//line sql.y:2831
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 314:
+	case 315:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2833
+		//line sql.y:2837
 		{
 			yyVAL.indexColumns = []*IndexColumn{yyDollar[1].indexColumn}
 		}
-	case 315:
+	case 316:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2837
+		//line sql.y:2841
 		{
 			yyVAL.indexColumns = append(yyVAL.indexColumns, yyDollar[3].indexColumn)
 		}
-	case 316:
+	case 317:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2843
+		//line sql.y:2847
 		{
 			yyVAL.indexColumn = &IndexColumn{Column: yyDollar[1].colIdent, Length: yyDollar[2].optVal}
 		}
-	case 317:
+	case 318:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2849
+		//line sql.y:2853
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 318:
+	case 319:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2853
+		//line sql.y:2857
 		{
 			// Change this to a rename statement
 			yyVAL.statement = &DDL{Action: RenameStr, Table: yyDollar[4].tableName, NewName: yyDollar[7].tableName}
 		}
-	case 319:
+	case 320:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2858
+		//line sql.y:2862
 		{
 			// Rename an index can just be an alter
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName}
 		}
-	case 320:
+	case 321:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2863
+		//line sql.y:2867
 		{
 			yyVAL.statement = &DDL{Action: AlterEngineStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName, Engine: string(yyDollar[7].bytes)}
 		}
-	case 321:
+	case 322:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:2867
+		//line sql.y:2871
 		{
 			yyVAL.statement = &DDL{Action: AlterCharsetStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName, Charset: string(yyDollar[9].bytes)}
 		}
-	case 322:
+	case 323:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2871
+		//line sql.y:2875
 		{
 			yyVAL.statement = &DDL{Action: AlterAddColumnStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName, TableSpec: yyDollar[7].tableSpec}
 		}
-	case 323:
+	case 324:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2875
+		//line sql.y:2879
 		{
 			yyVAL.statement = &DDL{Action: AlterDropColumnStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName, DropColumnName: string(yyDollar[7].bytes)}
 		}
-	case 324:
+	case 325:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:2879
+		//line sql.y:2883
 		{
 			yyVAL.statement = &DDL{Action: AlterModifyColumnStr, Table: yyDollar[4].tableName, NewName: yyDollar[4].tableName, ModifyColumnDef: yyDollar[7].columnDefinition}
 		}
-	case 325:
+	case 326:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2884
+		//line sql.y:2888
 		{
 			yyVAL.byt = 0
 		}
-	case 326:
+	case 327:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2888
+		//line sql.y:2892
 		{
 			yyVAL.byt = 1
 		}
-	case 327:
+	case 328:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2893
+		//line sql.y:2897
 		{
 		}
-	case 328:
+	case 329:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2895
+		//line sql.y:2899
 		{
 		}
-	case 329:
+	case 330:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2897
+		//line sql.y:2901
 		{
 		}
-	case 330:
+	case 331:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2901
+		//line sql.y:2905
 		{
 			var exists bool
 			if yyDollar[4].byt != 0 {
@@ -5201,15 +5263,15 @@ yydefault:
 				yyVAL.statement = &DDL{Action: DropTableStr, Tables: yyDollar[5].tableNames, IfExists: exists}
 			}
 		}
-	case 331:
+	case 332:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:2913
+		//line sql.y:2917
 		{
 			yyVAL.statement = &DDL{Action: DropIndexStr, IndexName: string(yyDollar[3].bytes), Table: yyDollar[5].tableName, NewName: yyDollar[5].tableName, indexLockAndAlgorithm: yyDollar[6].indexLockAndAlgorithm}
 		}
-	case 332:
+	case 333:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:2917
+		//line sql.y:2921
 		{
 			var exists bool
 			if yyDollar[3].byt != 0 {
@@ -5217,96 +5279,90 @@ yydefault:
 			}
 			yyVAL.statement = &DDL{Action: DropDBStr, Database: yyDollar[4].tableIdent, IfExists: exists}
 		}
-	case 333:
+	case 334:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2927
+		//line sql.y:2931
 		{
 			yyVAL.tableNames = TableNames{yyDollar[1].tableName}
 		}
-	case 334:
+	case 335:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2931
+		//line sql.y:2935
 		{
 			yyVAL.tableNames = append(yyVAL.tableNames, yyDollar[3].tableName)
 		}
-	case 335:
+	case 336:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2937
+		//line sql.y:2941
 		{
 		}
-	case 336:
+	case 337:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2939
+		//line sql.y:2943
 		{
 		}
-	case 337:
+	case 338:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2943
+		//line sql.y:2947
 		{
 			yyVAL.statement = &DDL{Action: TruncateTableStr, Table: yyDollar[3].tableName, NewName: yyDollar[3].tableName}
 		}
-	case 338:
+	case 339:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2949
+		//line sql.y:2953
 		{
 			yyVAL.statement = &DDL{Action: AlterStr, Table: yyDollar[3].tableName, NewName: yyDollar[3].tableName}
 		}
-	case 339:
+	case 340:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:2955
+		//line sql.y:2959
 		{
 			yyVAL.statement = &Xa{}
 		}
-	case 340:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2961
-		{
-		}
 	case 341:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2963
+		//line sql.y:2965
 		{
 		}
 	case 342:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2965
+		//line sql.y:2967
 		{
 		}
 	case 343:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:2968
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2969
 		{
-			yyVAL.showFilter = nil
 		}
 	case 344:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-0 : yypt+1]
 		//line sql.y:2972
 		{
-			yyVAL.showFilter = &ShowFilter{Like: yyDollar[1].colIdent.String()}
+			yyVAL.showFilter = nil
 		}
 	case 345:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2976
 		{
-			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[1].bytes)}
+			yyVAL.showFilter = &ShowFilter{Like: yyDollar[1].colIdent.String()}
 		}
 	case 346:
-		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:2982
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:2980
 		{
-			yyVAL.statement = &Show{Type: ShowColumnsStr, Table: yyDollar[2].tableName, Filter: yyDollar[3].showFilter}
+			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[1].bytes)}
 		}
 	case 347:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:2988
+		yyDollar = yyS[yypt-3 : yypt+1]
+		//line sql.y:2986
 		{
-			yyVAL.statement = yyDollar[1].selStmt
+			yyVAL.statement = &Show{Type: ShowColumnsStr, Table: yyDollar[2].tableName, Filter: yyDollar[3].showFilter}
 		}
 	case 348:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:2992
 		{
-			yyVAL.statement = yyDollar[1].statement
+			yyVAL.statement = yyDollar[1].selStmt
 		}
 	case 349:
 		yyDollar = yyS[yypt-1 : yypt+1]
@@ -5321,204 +5377,248 @@ yydefault:
 			yyVAL.statement = yyDollar[1].statement
 		}
 	case 351:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3005
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3004
 		{
-			yyVAL.explainType = ExplainTypeEmpty
+			yyVAL.statement = yyDollar[1].statement
 		}
 	case 352:
-		yyDollar = yyS[yypt-3 : yypt+1]
+		yyDollar = yyS[yypt-0 : yypt+1]
 		//line sql.y:3009
 		{
-			yyVAL.explainType = ExplainTypeJSON
+			yyVAL.explainType = ExplainTypeEmpty
 		}
 	case 353:
 		yyDollar = yyS[yypt-3 : yypt+1]
 		//line sql.y:3013
 		{
-			yyVAL.explainType = ExplainTypeTree
+			yyVAL.explainType = ExplainTypeJSON
 		}
 	case 354:
 		yyDollar = yyS[yypt-3 : yypt+1]
 		//line sql.y:3017
 		{
-			yyVAL.explainType = ExplainTypeTraditional
+			yyVAL.explainType = ExplainTypeTree
 		}
 	case 355:
-		yyDollar = yyS[yypt-1 : yypt+1]
+		yyDollar = yyS[yypt-3 : yypt+1]
 		//line sql.y:3021
 		{
-			yyVAL.explainType = ExplainTypeExtended
+			yyVAL.explainType = ExplainTypeTraditional
 		}
 	case 356:
 		yyDollar = yyS[yypt-1 : yypt+1]
 		//line sql.y:3025
 		{
-			yyVAL.explainType = ExplainTypePartitions
+			yyVAL.explainType = ExplainTypeExtended
 		}
 	case 357:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3029
+		{
+			yyVAL.explainType = ExplainTypePartitions
+		}
+	case 358:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3031
+		//line sql.y:3035
 		{
 			yyVAL.statement = &Explain{Type: yyDollar[2].explainType, Statement: yyDollar[3].statement}
 		}
-	case 358:
+	case 359:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3035
+		//line sql.y:3039
 		{
 			// Currently we just parse it.
 			yyVAL.statement = &Explain{Type: yyDollar[2].explainType, Statement: &OtherRead{}}
 		}
-	case 359:
+	case 360:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3040
+		//line sql.y:3044
 		{
 			yyVAL.statement = &Explain{Type: ExplainTypeEmpty, Analyze: true, Statement: yyDollar[3].statement}
 		}
-	case 360:
+	case 361:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3044
+		//line sql.y:3048
 		{
 			yyVAL.statement = &Explain{Type: ExplainTypeEmpty, Analyze: true, Statement: yyDollar[6].statement}
 		}
-	case 361:
-		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3049
-		{
-		}
 	case 362:
-		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3051
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:3053
 		{
+			yyVAL.optVal = nil
 		}
 	case 363:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3053
+		//line sql.y:3057
 		{
+			// Normal str as an identify, without quote
+			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[1].bytes)
 		}
 	case 364:
-		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3057
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3062
 		{
-			yyVAL.statement = &Kill{QueryID: &NumVal{raw: string(yyDollar[3].bytes)}}
+			// Str with Quote, it will be parsed by Lex begin with quote \' or \"
+			yyVAL.optVal = NewStrVal(yyDollar[1].bytes)
 		}
 	case 365:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3067
+		{
+			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[1].bytes)
+		}
+	case 366:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3071
+		{
+			yyVAL.optVal = NewStrValWithoutQuote(yyDollar[1].bytes)
+		}
+	case 367:
+		yyDollar = yyS[yypt-2 : yypt+1]
+		//line sql.y:3077
+		{
+			yyVAL.statement = &Help{HelpInfo: yyDollar[2].optVal}
+		}
+	case 368:
+		yyDollar = yyS[yypt-0 : yypt+1]
+		//line sql.y:3082
+		{
+		}
+	case 369:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3084
+		{
+		}
+	case 370:
+		yyDollar = yyS[yypt-1 : yypt+1]
+		//line sql.y:3086
+		{
+		}
+	case 371:
+		yyDollar = yyS[yypt-4 : yypt+1]
+		//line sql.y:3090
+		{
+			yyVAL.statement = &Kill{QueryID: &NumVal{raw: string(yyDollar[3].bytes)}}
+		}
+	case 372:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3063
+		//line sql.y:3096
 		{
 			yyVAL.statement = &Transaction{Action: BeginTxnStr}
 		}
-	case 366:
+	case 373:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3067
+		//line sql.y:3100
 		{
 			yyVAL.statement = &Transaction{Action: StartTxnStr}
 		}
-	case 367:
+	case 374:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3071
+		//line sql.y:3104
 		{
 			yyVAL.statement = &Transaction{Action: RollbackTxnStr}
 		}
-	case 368:
+	case 375:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3075
+		//line sql.y:3108
 		{
 			yyVAL.statement = &Transaction{Action: CommitTxnStr}
 		}
-	case 369:
+	case 376:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3081
+		//line sql.y:3114
 		{
 			yyVAL.statement = &Radon{Action: AttachStr, Row: yyDollar[3].valTuple}
 		}
-	case 370:
+	case 377:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3085
+		//line sql.y:3118
 		{
 			yyVAL.statement = &Radon{Action: DetachStr, Row: yyDollar[3].valTuple}
 		}
-	case 371:
+	case 378:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3089
+		//line sql.y:3122
 		{
 			yyVAL.statement = &Radon{Action: AttachListStr}
 		}
-	case 372:
+	case 379:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3093
+		//line sql.y:3126
 		{
 			yyVAL.statement = &Radon{Action: ReshardStr, Table: yyDollar[3].tableName, NewName: yyDollar[5].tableName}
 		}
-	case 373:
+	case 380:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3097
+		//line sql.y:3130
 		{
 			yyVAL.statement = &Radon{Action: CleanupStr}
 		}
-	case 374:
+	case 381:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3101
+		//line sql.y:3134
 		{
 			yyVAL.statement = &Radon{Action: RebalanceStr}
 		}
-	case 375:
+	case 382:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3105
+		//line sql.y:3138
 		{
 			yyVAL.statement = &Radon{Action: XARecoverStr}
 		}
-	case 376:
+	case 383:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3109
+		//line sql.y:3142
 		{
 			yyVAL.statement = &Radon{Action: XACommitStr}
 		}
-	case 377:
+	case 384:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3113
+		//line sql.y:3146
 		{
 			yyVAL.statement = &Radon{Action: XARollbackStr}
 		}
-	case 378:
+	case 385:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3119
+		//line sql.y:3152
 		{
 			yyVAL.statement = &Show{Type: ShowBinlogEventsStr, From: yyDollar[4].str, Limit: yyDollar[5].limit}
 		}
-	case 379:
+	case 386:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3123
+		//line sql.y:3156
 		{
 			yyVAL.statement = &Show{Type: ShowCreateTableStr, Table: yyDollar[4].tableName}
 		}
-	case 380:
+	case 387:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3127
+		//line sql.y:3160
 		{
 			yyVAL.statement = &Show{Type: ShowCreateDatabaseStr, Database: yyDollar[4].tableIdent.v}
 		}
-	case 381:
+	case 388:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3131
+		//line sql.y:3164
 		{
 			yyVAL.statement = &Show{Type: ShowDatabasesStr}
 		}
-	case 382:
+	case 389:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3135
+		//line sql.y:3168
 		{
 			yyVAL.statement = &Show{Type: ShowEnginesStr}
 		}
-	case 383:
+	case 390:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3139
+		//line sql.y:3172
 		{
 			yyVAL.statement = &Show{Full: yyDollar[2].str, Type: ShowTablesStr, Database: yyDollar[4].str, Filter: yyDollar[5].showFilter}
 		}
-	case 384:
+	case 391:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3143
+		//line sql.y:3176
 		{
 			if yyDollar[5].str != "" {
 				yyDollar[4].tableName.Qualifier.v = yyDollar[5].str
@@ -5529,523 +5629,523 @@ yydefault:
 			}
 			yyVAL.statement = &Show{Type: ShowIndexStr, Table: yyDollar[4].tableName, Filter: filter}
 		}
-	case 385:
+	case 392:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:3154
+		//line sql.y:3187
 		{
 			if yyDollar[6].str != "" {
 				yyDollar[5].tableName.Qualifier.v = yyDollar[6].str
 			}
 			yyVAL.statement = &Show{Full: yyDollar[2].str, Type: ShowColumnsStr, Table: yyDollar[5].tableName, Filter: yyDollar[7].showFilter}
 		}
-	case 386:
+	case 393:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3161
+		//line sql.y:3194
 		{
 			yyVAL.statement = &Show{Type: ShowProcesslistStr}
 		}
-	case 387:
+	case 394:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3165
+		//line sql.y:3198
 		{
 			yyVAL.statement = &Show{Type: ShowQueryzStr}
 		}
-	case 388:
+	case 395:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3169
+		//line sql.y:3202
 		{
 			yyVAL.statement = &Show{Type: ShowStatusStr}
 		}
-	case 389:
+	case 396:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3173
+		//line sql.y:3206
 		{
 			yyVAL.statement = &Show{Type: ShowTableStatusStr, Database: yyDollar[4].str}
 		}
-	case 390:
+	case 397:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3177
+		//line sql.y:3210
 		{
 			yyVAL.statement = &Show{Type: ShowTxnzStr}
 		}
-	case 391:
+	case 398:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3181
+		//line sql.y:3214
 		{
 			yyVAL.statement = &Show{Type: ShowVariablesStr}
 		}
-	case 392:
+	case 399:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3185
+		//line sql.y:3218
 		{
 			yyVAL.statement = &Show{Type: ShowVersionsStr}
 		}
-	case 393:
+	case 400:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3189
+		//line sql.y:3222
 		{
 			yyVAL.statement = &Show{Type: ShowWarningsStr}
 		}
-	case 394:
+	case 401:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3193
+		//line sql.y:3226
 		{
 			yyVAL.statement = &Show{Type: ShowCollationStr}
 		}
-	case 395:
+	case 402:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3197
+		//line sql.y:3230
 		{
 			yyVAL.statement = &Show{Type: ShowCharsetStr}
 		}
-	case 396:
+	case 403:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3201
+		//line sql.y:3234
 		{
 			yyVAL.statement = &Show{Type: ShowUnsupportedStr}
 		}
-	case 397:
+	case 404:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3206
+		//line sql.y:3239
 		{
 			yyVAL.str = ""
 		}
-	case 398:
+	case 405:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3210
+		//line sql.y:3243
 		{
 			yyVAL.str = string(yyDollar[3].bytes)
 		}
-	case 399:
+	case 406:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3216
+		//line sql.y:3249
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 400:
+	case 407:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3220
+		//line sql.y:3253
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 401:
+	case 408:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3224
+		//line sql.y:3257
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 402:
+	case 409:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3230
+		//line sql.y:3263
 		{
 			yyVAL.str = ""
 		}
-	case 403:
+	case 410:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3234
+		//line sql.y:3267
 		{
 			yyVAL.str = yyDollar[2].tableIdent.v
 		}
-	case 404:
+	case 411:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3240
+		//line sql.y:3273
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 405:
+	case 412:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3244
+		//line sql.y:3277
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 406:
+	case 413:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3250
+		//line sql.y:3283
 		{
 			yyVAL.str = ""
 		}
-	case 407:
+	case 414:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3254
+		//line sql.y:3287
 		{
 			yyVAL.str = "full "
 		}
-	case 408:
+	case 415:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3260
+		//line sql.y:3293
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 409:
+	case 416:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3264
+		//line sql.y:3297
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 410:
+	case 417:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3270
+		//line sql.y:3303
 		{
 			yyVAL.showFilter = nil
 		}
-	case 411:
+	case 418:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3274
+		//line sql.y:3307
 		{
 			yyVAL.showFilter = &ShowFilter{Like: string(yyDollar[2].bytes)}
 		}
-	case 412:
+	case 419:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3278
+		//line sql.y:3311
 		{
 			yyVAL.showFilter = &ShowFilter{Filter: yyDollar[2].expr}
 		}
-	case 413:
+	case 420:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3284
+		//line sql.y:3317
 		{
 			yyVAL.statement = &Checksum{Table: yyDollar[3].tableName}
 		}
-	case 414:
+	case 421:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3290
+		//line sql.y:3323
 		{
 			yyVAL.statement = &Use{DBName: yyDollar[2].tableIdent}
 		}
-	case 415:
+	case 422:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3296
+		//line sql.y:3329
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 416:
+	case 423:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3300
+		//line sql.y:3333
 		{
 			yyVAL.statement = &OtherAdmin{}
 		}
-	case 417:
+	case 424:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3305
+		//line sql.y:3338
 		{
 			setAllowComments(yylex, true)
 		}
-	case 418:
+	case 425:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3308
+		//line sql.y:3341
 		{
 			yyVAL.bytes2 = yyDollar[2].bytes2
 			setAllowComments(yylex, false)
 		}
-	case 419:
+	case 426:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3314
+		//line sql.y:3347
 		{
 			yyVAL.bytes2 = nil
 		}
-	case 420:
+	case 427:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3318
+		//line sql.y:3351
 		{
 			yyVAL.bytes2 = append(yyDollar[1].bytes2, yyDollar[2].bytes)
 		}
-	case 421:
+	case 428:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3324
+		//line sql.y:3357
 		{
 			yyVAL.str = UnionStr
 		}
-	case 422:
+	case 429:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3328
+		//line sql.y:3361
 		{
 			yyVAL.str = UnionAllStr
 		}
-	case 423:
+	case 430:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3332
+		//line sql.y:3365
 		{
 			yyVAL.str = UnionDistinctStr
 		}
-	case 424:
+	case 431:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3337
+		//line sql.y:3370
 		{
 			yyVAL.str = ""
 		}
-	case 425:
+	case 432:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3341
+		//line sql.y:3374
 		{
 			yyVAL.str = SQLNoCacheStr
 		}
-	case 426:
+	case 433:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3345
+		//line sql.y:3378
 		{
 			yyVAL.str = SQLCacheStr
 		}
-	case 427:
+	case 434:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3350
+		//line sql.y:3383
 		{
 			yyVAL.str = ""
 		}
-	case 428:
+	case 435:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3354
+		//line sql.y:3387
 		{
 			yyVAL.str = DistinctStr
 		}
-	case 429:
+	case 436:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3359
+		//line sql.y:3392
 		{
 			yyVAL.str = ""
 		}
-	case 430:
+	case 437:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3363
+		//line sql.y:3396
 		{
 			yyVAL.str = StraightJoinHint
 		}
-	case 431:
+	case 438:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3368
+		//line sql.y:3401
 		{
 			yyVAL.selectExprs = nil
 		}
-	case 432:
+	case 439:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3372
+		//line sql.y:3405
 		{
 			yyVAL.selectExprs = yyDollar[1].selectExprs
 		}
-	case 433:
+	case 440:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3378
+		//line sql.y:3411
 		{
 			yyVAL.selectExprs = SelectExprs{yyDollar[1].selectExpr}
 		}
-	case 434:
+	case 441:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3382
+		//line sql.y:3415
 		{
 			yyVAL.selectExprs = append(yyVAL.selectExprs, yyDollar[3].selectExpr)
 		}
-	case 435:
+	case 442:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3388
+		//line sql.y:3421
 		{
 			yyVAL.selectExpr = &StarExpr{}
 		}
-	case 436:
+	case 443:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3392
+		//line sql.y:3425
 		{
 			yyVAL.selectExpr = &AliasedExpr{Expr: yyDollar[1].expr, As: yyDollar[2].colIdent}
 		}
-	case 437:
+	case 444:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3396
+		//line sql.y:3429
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Name: yyDollar[1].tableIdent}}
 		}
-	case 438:
+	case 445:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3400
+		//line sql.y:3433
 		{
 			yyVAL.selectExpr = &StarExpr{TableName: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}}
 		}
-	case 439:
+	case 446:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3405
+		//line sql.y:3438
 		{
 			yyVAL.colIdent = ColIdent{}
 		}
-	case 440:
+	case 447:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3409
+		//line sql.y:3442
 		{
 			yyVAL.colIdent = yyDollar[1].colIdent
 		}
-	case 441:
+	case 448:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3413
+		//line sql.y:3446
 		{
 			yyVAL.colIdent = yyDollar[2].colIdent
 		}
-	case 443:
+	case 450:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3420
+		//line sql.y:3453
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 444:
+	case 451:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3425
+		//line sql.y:3458
 		{
 			yyVAL.tableExprs = TableExprs{&AliasedTableExpr{Expr: TableName{Name: NewTableIdent("dual")}}}
 		}
-	case 445:
+	case 452:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3429
+		//line sql.y:3462
 		{
 			yyVAL.tableExprs = yyDollar[2].tableExprs
 		}
-	case 446:
+	case 453:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3435
+		//line sql.y:3468
 		{
 			yyVAL.tableExprs = TableExprs{yyDollar[1].tableExpr}
 		}
-	case 447:
+	case 454:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3439
+		//line sql.y:3472
 		{
 			yyVAL.tableExprs = append(yyVAL.tableExprs, yyDollar[3].tableExpr)
 		}
-	case 450:
+	case 457:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3449
+		//line sql.y:3482
 		{
 			yyVAL.tableExpr = yyDollar[1].aliasedTableName
 		}
-	case 451:
+	case 458:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3453
+		//line sql.y:3486
 		{
 			yyVAL.tableExpr = &AliasedTableExpr{Expr: yyDollar[1].subquery, As: yyDollar[3].tableIdent}
 		}
-	case 452:
+	case 459:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3457
+		//line sql.y:3490
 		{
 			yyVAL.tableExpr = &ParenTableExpr{Exprs: yyDollar[2].tableExprs}
 		}
-	case 453:
+	case 460:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3463
+		//line sql.y:3496
 		{
 			yyVAL.aliasedTableName = &AliasedTableExpr{Expr: yyDollar[1].tableName, As: yyDollar[2].tableIdent, Hints: yyDollar[3].indexHints}
 		}
-	case 454:
+	case 461:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3476
+		//line sql.y:3509
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr}
 		}
-	case 455:
+	case 462:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3480
+		//line sql.y:3513
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, On: yyDollar[5].expr}
 		}
-	case 456:
+	case 463:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3484
+		//line sql.y:3517
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr, On: yyDollar[5].expr}
 		}
-	case 457:
+	case 464:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3488
+		//line sql.y:3521
 		{
 			yyVAL.tableExpr = &JoinTableExpr{LeftExpr: yyDollar[1].tableExpr, Join: yyDollar[2].str, RightExpr: yyDollar[3].tableExpr}
 		}
-	case 458:
+	case 465:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3493
+		//line sql.y:3526
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 459:
+	case 466:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3497
+		//line sql.y:3530
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 460:
+	case 467:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3502
+		//line sql.y:3535
 		{
 			yyVAL.tableIdent = NewTableIdent("")
 		}
-	case 461:
+	case 468:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3506
+		//line sql.y:3539
 		{
 			yyVAL.tableIdent = yyDollar[1].tableIdent
 		}
-	case 462:
+	case 469:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3510
+		//line sql.y:3543
 		{
 			yyVAL.tableIdent = yyDollar[2].tableIdent
 		}
-	case 464:
+	case 471:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3517
+		//line sql.y:3550
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 465:
+	case 472:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3523
+		//line sql.y:3556
 		{
 			yyVAL.str = JoinStr
 		}
-	case 466:
+	case 473:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3527
+		//line sql.y:3560
 		{
 			yyVAL.str = JoinStr
 		}
-	case 467:
+	case 474:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3531
+		//line sql.y:3564
 		{
 			yyVAL.str = JoinStr
 		}
-	case 468:
+	case 475:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3535
+		//line sql.y:3568
 		{
 			yyVAL.str = StraightJoinStr
 		}
-	case 469:
+	case 476:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3541
+		//line sql.y:3574
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 470:
+	case 477:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3545
+		//line sql.y:3578
 		{
 			yyVAL.str = LeftJoinStr
 		}
-	case 471:
+	case 478:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3549
+		//line sql.y:3582
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 472:
+	case 479:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3553
+		//line sql.y:3586
 		{
 			yyVAL.str = RightJoinStr
 		}
-	case 473:
+	case 480:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3559
+		//line sql.y:3592
 		{
 			yyVAL.str = NaturalJoinStr
 		}
-	case 474:
+	case 481:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3563
+		//line sql.y:3596
 		{
 			if yyDollar[2].str == LeftJoinStr {
 				yyVAL.str = NaturalLeftJoinStr
@@ -6053,459 +6153,459 @@ yydefault:
 				yyVAL.str = NaturalRightJoinStr
 			}
 		}
-	case 475:
+	case 482:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3573
+		//line sql.y:3606
 		{
 			yyVAL.tableName = yyDollar[2].tableName
 		}
-	case 476:
+	case 483:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3577
+		//line sql.y:3610
 		{
 			yyVAL.tableName = yyDollar[1].tableName
 		}
-	case 477:
+	case 484:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3583
+		//line sql.y:3616
 		{
 			yyVAL.tableName = TableName{Name: yyDollar[1].tableIdent}
 		}
-	case 478:
+	case 485:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3587
+		//line sql.y:3620
 		{
 			yyVAL.tableName = TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}
 		}
-	case 479:
+	case 486:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3592
+		//line sql.y:3625
 		{
 			yyVAL.indexHints = nil
 		}
-	case 480:
+	case 487:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3596
+		//line sql.y:3629
 		{
 			yyVAL.indexHints = &IndexHints{Type: UseStr, Indexes: yyDollar[4].colIdents}
 		}
-	case 481:
+	case 488:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3600
+		//line sql.y:3633
 		{
 			yyVAL.indexHints = &IndexHints{Type: IgnoreStr, Indexes: yyDollar[4].colIdents}
 		}
-	case 482:
+	case 489:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3604
+		//line sql.y:3637
 		{
 			yyVAL.indexHints = &IndexHints{Type: ForceStr, Indexes: yyDollar[4].colIdents}
 		}
-	case 483:
+	case 490:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3610
+		//line sql.y:3643
 		{
 			yyVAL.colIdents = []ColIdent{yyDollar[1].colIdent}
 		}
-	case 484:
+	case 491:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3614
+		//line sql.y:3647
 		{
 			yyVAL.colIdents = append(yyDollar[1].colIdents, yyDollar[3].colIdent)
 		}
-	case 485:
+	case 492:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3619
+		//line sql.y:3652
 		{
 			yyVAL.expr = nil
 		}
-	case 486:
+	case 493:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3623
+		//line sql.y:3656
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 487:
+	case 494:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3629
+		//line sql.y:3662
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 488:
+	case 495:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3633
+		//line sql.y:3666
 		{
 			yyVAL.expr = &AndExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 489:
+	case 496:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3637
+		//line sql.y:3670
 		{
 			yyVAL.expr = &OrExpr{Left: yyDollar[1].expr, Right: yyDollar[3].expr}
 		}
-	case 490:
+	case 497:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3641
+		//line sql.y:3674
 		{
 			yyVAL.expr = &NotExpr{Expr: yyDollar[2].expr}
 		}
-	case 491:
+	case 498:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3645
+		//line sql.y:3678
 		{
 			yyVAL.expr = &IsExpr{Operator: yyDollar[3].str, Expr: yyDollar[1].expr}
 		}
-	case 492:
+	case 499:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3649
+		//line sql.y:3682
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 493:
+	case 500:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3653
+		//line sql.y:3686
 		{
 			yyVAL.expr = &Default{ColName: yyDollar[2].str}
 		}
-	case 494:
+	case 501:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3659
+		//line sql.y:3692
 		{
 			yyVAL.str = ""
 		}
-	case 495:
+	case 502:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3663
+		//line sql.y:3696
 		{
 			yyVAL.str = string(yyDollar[2].bytes)
 		}
-	case 496:
+	case 503:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3669
+		//line sql.y:3702
 		{
 			yyVAL.boolVal = BoolVal(true)
 		}
-	case 497:
+	case 504:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3673
+		//line sql.y:3706
 		{
 			yyVAL.boolVal = BoolVal(false)
 		}
-	case 498:
+	case 505:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3679
+		//line sql.y:3712
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: yyDollar[2].str, Right: yyDollar[3].expr}
 		}
-	case 499:
+	case 506:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3683
+		//line sql.y:3716
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: InStr, Right: yyDollar[3].colTuple}
 		}
-	case 500:
+	case 507:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3687
+		//line sql.y:3720
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotInStr, Right: yyDollar[4].colTuple}
 		}
-	case 501:
+	case 508:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3691
+		//line sql.y:3724
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: LikeStr, Right: yyDollar[3].expr, Escape: yyDollar[4].expr}
 		}
-	case 502:
+	case 509:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3695
+		//line sql.y:3728
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotLikeStr, Right: yyDollar[4].expr, Escape: yyDollar[5].expr}
 		}
-	case 503:
+	case 510:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3699
+		//line sql.y:3732
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: RegexpStr, Right: yyDollar[3].expr}
 		}
-	case 504:
+	case 511:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3703
+		//line sql.y:3736
 		{
 			yyVAL.expr = &ComparisonExpr{Left: yyDollar[1].expr, Operator: NotRegexpStr, Right: yyDollar[4].expr}
 		}
-	case 505:
+	case 512:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3707
+		//line sql.y:3740
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: BetweenStr, From: yyDollar[3].expr, To: yyDollar[5].expr}
 		}
-	case 506:
+	case 513:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3711
+		//line sql.y:3744
 		{
 			yyVAL.expr = &RangeCond{Left: yyDollar[1].expr, Operator: NotBetweenStr, From: yyDollar[4].expr, To: yyDollar[6].expr}
 		}
-	case 507:
+	case 514:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3715
+		//line sql.y:3748
 		{
 			yyVAL.expr = &ExistsExpr{Subquery: yyDollar[2].subquery}
 		}
-	case 508:
+	case 515:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3721
+		//line sql.y:3754
 		{
 			yyVAL.str = IsNullStr
 		}
-	case 509:
+	case 516:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3725
+		//line sql.y:3758
 		{
 			yyVAL.str = IsNotNullStr
 		}
-	case 510:
+	case 517:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3729
+		//line sql.y:3762
 		{
 			yyVAL.str = IsTrueStr
 		}
-	case 511:
+	case 518:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3733
+		//line sql.y:3766
 		{
 			yyVAL.str = IsNotTrueStr
 		}
-	case 512:
+	case 519:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3737
+		//line sql.y:3770
 		{
 			yyVAL.str = IsFalseStr
 		}
-	case 513:
+	case 520:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3741
+		//line sql.y:3774
 		{
 			yyVAL.str = IsNotFalseStr
 		}
-	case 514:
+	case 521:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3747
+		//line sql.y:3780
 		{
 			yyVAL.str = EqualStr
 		}
-	case 515:
+	case 522:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3751
+		//line sql.y:3784
 		{
 			yyVAL.str = LessThanStr
 		}
-	case 516:
+	case 523:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3755
+		//line sql.y:3788
 		{
 			yyVAL.str = GreaterThanStr
 		}
-	case 517:
+	case 524:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3759
+		//line sql.y:3792
 		{
 			yyVAL.str = LessEqualStr
 		}
-	case 518:
+	case 525:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3763
+		//line sql.y:3796
 		{
 			yyVAL.str = GreaterEqualStr
 		}
-	case 519:
+	case 526:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3767
+		//line sql.y:3800
 		{
 			yyVAL.str = NotEqualStr
 		}
-	case 520:
+	case 527:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3771
+		//line sql.y:3804
 		{
 			yyVAL.str = NullSafeEqualStr
 		}
-	case 521:
+	case 528:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:3776
+		//line sql.y:3809
 		{
 			yyVAL.expr = nil
 		}
-	case 522:
+	case 529:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3780
+		//line sql.y:3813
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 523:
+	case 530:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3786
+		//line sql.y:3819
 		{
 			yyVAL.colTuple = yyDollar[1].valTuple
 		}
-	case 524:
+	case 531:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3790
+		//line sql.y:3823
 		{
 			yyVAL.colTuple = yyDollar[1].subquery
 		}
-	case 525:
+	case 532:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3794
+		//line sql.y:3827
 		{
 			yyVAL.colTuple = ListArg(yyDollar[1].bytes)
 		}
-	case 526:
+	case 533:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3800
+		//line sql.y:3833
 		{
 			yyVAL.subquery = &Subquery{yyDollar[2].selStmt}
 		}
-	case 527:
+	case 534:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3806
+		//line sql.y:3839
 		{
 			yyVAL.exprs = Exprs{yyDollar[1].expr}
 		}
-	case 528:
+	case 535:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3810
+		//line sql.y:3843
 		{
 			yyVAL.exprs = append(yyDollar[1].exprs, yyDollar[3].expr)
 		}
-	case 529:
+	case 536:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3816
+		//line sql.y:3849
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 530:
+	case 537:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3820
+		//line sql.y:3853
 		{
 			yyVAL.expr = yyDollar[1].boolVal
 		}
-	case 531:
+	case 538:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3824
+		//line sql.y:3857
 		{
 			yyVAL.expr = yyDollar[1].colName
 		}
-	case 532:
+	case 539:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3828
+		//line sql.y:3861
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 533:
+	case 540:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:3832
+		//line sql.y:3865
 		{
 			yyVAL.expr = yyDollar[1].subquery
 		}
-	case 534:
+	case 541:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3836
+		//line sql.y:3869
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitAndStr, Right: yyDollar[3].expr}
 		}
-	case 535:
+	case 542:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3840
+		//line sql.y:3873
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitOrStr, Right: yyDollar[3].expr}
 		}
-	case 536:
+	case 543:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3844
+		//line sql.y:3877
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: BitXorStr, Right: yyDollar[3].expr}
 		}
-	case 537:
+	case 544:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3848
+		//line sql.y:3881
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: PlusStr, Right: yyDollar[3].expr}
 		}
-	case 538:
+	case 545:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3852
+		//line sql.y:3885
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MinusStr, Right: yyDollar[3].expr}
 		}
-	case 539:
+	case 546:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3856
+		//line sql.y:3889
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: MultStr, Right: yyDollar[3].expr}
 		}
-	case 540:
+	case 547:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3860
+		//line sql.y:3893
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: DivStr, Right: yyDollar[3].expr}
 		}
-	case 541:
+	case 548:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3864
+		//line sql.y:3897
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: IntDivStr, Right: yyDollar[3].expr}
 		}
-	case 542:
+	case 549:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3868
+		//line sql.y:3901
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 543:
+	case 550:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3872
+		//line sql.y:3905
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ModStr, Right: yyDollar[3].expr}
 		}
-	case 544:
+	case 551:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3876
+		//line sql.y:3909
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftLeftStr, Right: yyDollar[3].expr}
 		}
-	case 545:
+	case 552:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3880
+		//line sql.y:3913
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].expr, Operator: ShiftRightStr, Right: yyDollar[3].expr}
 		}
-	case 546:
+	case 553:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3884
+		//line sql.y:3917
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONExtractOp, Right: yyDollar[3].expr}
 		}
-	case 547:
+	case 554:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3888
+		//line sql.y:3921
 		{
 			yyVAL.expr = &BinaryExpr{Left: yyDollar[1].colName, Operator: JSONUnquoteExtractOp, Right: yyDollar[3].expr}
 		}
-	case 548:
+	case 555:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3892
+		//line sql.y:3925
 		{
 			yyVAL.expr = &CollateExpr{Expr: yyDollar[1].expr, Charset: yyDollar[3].str}
 		}
-	case 549:
+	case 556:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3896
+		//line sql.y:3929
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BinaryStr, Expr: yyDollar[2].expr}
 		}
-	case 550:
+	case 557:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3900
+		//line sql.y:3933
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				yyVAL.expr = num
@@ -6513,9 +6613,9 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UPlusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 551:
+	case 558:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3908
+		//line sql.y:3941
 		{
 			if num, ok := yyDollar[2].expr.(*SQLVal); ok && num.Type == IntVal {
 				// Handle double negative
@@ -6529,21 +6629,21 @@ yydefault:
 				yyVAL.expr = &UnaryExpr{Operator: UMinusStr, Expr: yyDollar[2].expr}
 			}
 		}
-	case 552:
+	case 559:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3922
+		//line sql.y:3955
 		{
 			yyVAL.expr = &UnaryExpr{Operator: TildaStr, Expr: yyDollar[2].expr}
 		}
-	case 553:
+	case 560:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:3926
+		//line sql.y:3959
 		{
 			yyVAL.expr = &UnaryExpr{Operator: BangStr, Expr: yyDollar[2].expr}
 		}
-	case 554:
+	case 561:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:3930
+		//line sql.y:3963
 		{
 			// This rule prevents the usage of INTERVAL
 			// as a function. If support is needed for that,
@@ -6551,389 +6651,389 @@ yydefault:
 			// will be non-trivial because of grammar conflicts.
 			yyVAL.expr = &IntervalExpr{Expr: yyDollar[2].expr, Unit: yyDollar[3].colIdent.String()}
 		}
-	case 559:
+	case 566:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3948
+		//line sql.y:3981
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Exprs: yyDollar[3].selectExprs}
 		}
-	case 560:
+	case 567:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3952
+		//line sql.y:3985
 		{
 			yyVAL.expr = &FuncExpr{Name: yyDollar[1].colIdent, Distinct: true, Exprs: yyDollar[4].selectExprs}
 		}
-	case 561:
+	case 568:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3956
+		//line sql.y:3989
 		{
 			yyVAL.expr = &FuncExpr{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].colIdent, Exprs: yyDollar[5].selectExprs}
 		}
-	case 562:
+	case 569:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3966
+		//line sql.y:3999
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("left"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 563:
+	case 570:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3970
+		//line sql.y:4003
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("right"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 564:
+	case 571:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3974
+		//line sql.y:4007
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 565:
+	case 572:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3978
+		//line sql.y:4011
 		{
 			yyVAL.expr = &ConvertExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].convertType}
 		}
-	case 566:
+	case 573:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:3982
+		//line sql.y:4015
 		{
 			yyVAL.expr = &ConvertUsingExpr{Expr: yyDollar[3].expr, Type: yyDollar[5].str}
 		}
-	case 567:
+	case 574:
 		yyDollar = yyS[yypt-9 : yypt+1]
-		//line sql.y:3986
+		//line sql.y:4019
 		{
 			yyVAL.expr = &MatchExpr{Columns: yyDollar[3].selectExprs, Expr: yyDollar[7].expr, Option: yyDollar[8].str}
 		}
-	case 568:
+	case 575:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:3990
+		//line sql.y:4023
 		{
 			yyVAL.expr = &GroupConcatExpr{Distinct: yyDollar[3].str, Exprs: yyDollar[4].selectExprs, OrderBy: yyDollar[5].orderBy, Separator: yyDollar[6].str}
 		}
-	case 569:
+	case 576:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:3994
+		//line sql.y:4027
 		{
 			yyVAL.expr = &CaseExpr{Expr: yyDollar[2].expr, Whens: yyDollar[3].whens, Else: yyDollar[4].expr}
 		}
-	case 570:
+	case 577:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:3998
+		//line sql.y:4031
 		{
 			yyVAL.expr = &ValuesFuncExpr{Name: yyDollar[3].colIdent}
 		}
-	case 571:
+	case 578:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4008
+		//line sql.y:4041
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_timestamp")}
 		}
-	case 572:
+	case 579:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4012
+		//line sql.y:4045
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_timestamp")}
 		}
-	case 573:
+	case 580:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4016
+		//line sql.y:4049
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_time")}
 		}
-	case 574:
+	case 581:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4020
+		//line sql.y:4053
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("utc_date")}
 		}
-	case 575:
+	case 582:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4025
+		//line sql.y:4058
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtime")}
 		}
-	case 576:
+	case 583:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4030
+		//line sql.y:4063
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("localtimestamp")}
 		}
-	case 577:
+	case 584:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4035
+		//line sql.y:4068
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_date")}
 		}
-	case 578:
+	case 585:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4040
+		//line sql.y:4073
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("current_time")}
 		}
-	case 581:
+	case 588:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4055
+		//line sql.y:4088
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("if"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 582:
+	case 589:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4059
+		//line sql.y:4092
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("database"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 583:
+	case 590:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4063
+		//line sql.y:4096
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("mod"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 584:
+	case 591:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4067
+		//line sql.y:4100
 		{
 			yyVAL.expr = &FuncExpr{Name: NewColIdent("replace"), Exprs: yyDollar[3].selectExprs}
 		}
-	case 585:
+	case 592:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4073
+		//line sql.y:4106
 		{
 			yyVAL.str = ""
 		}
-	case 586:
+	case 593:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4077
+		//line sql.y:4110
 		{
 			yyVAL.str = BooleanModeStr
 		}
-	case 587:
+	case 594:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4081
+		//line sql.y:4114
 		{
 			yyVAL.str = NaturalLanguageModeStr
 		}
-	case 588:
+	case 595:
 		yyDollar = yyS[yypt-7 : yypt+1]
-		//line sql.y:4085
+		//line sql.y:4118
 		{
 			yyVAL.str = NaturalLanguageModeWithQueryExpansionStr
 		}
-	case 589:
+	case 596:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4089
+		//line sql.y:4122
 		{
 			yyVAL.str = QueryExpansionStr
 		}
-	case 590:
+	case 597:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4095
+		//line sql.y:4128
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 591:
+	case 598:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4099
+		//line sql.y:4132
 		{
 			yyVAL.str = string(yyDollar[1].bytes)
 		}
-	case 592:
+	case 599:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4105
+		//line sql.y:4138
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 593:
+	case 600:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4109
+		//line sql.y:4142
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: yyDollar[3].str, Operator: CharacterSetStr}
 		}
-	case 594:
+	case 601:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4113
+		//line sql.y:4146
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal, Charset: string(yyDollar[3].bytes)}
 		}
-	case 595:
+	case 602:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4117
+		//line sql.y:4150
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 596:
+	case 603:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4121
+		//line sql.y:4154
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 597:
+	case 604:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4125
+		//line sql.y:4158
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 			yyVAL.convertType.Length = yyDollar[2].lengthScaleOption.Length
 			yyVAL.convertType.Scale = yyDollar[2].lengthScaleOption.Scale
 		}
-	case 598:
+	case 605:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4131
+		//line sql.y:4164
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 599:
+	case 606:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4135
+		//line sql.y:4168
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 600:
+	case 607:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4139
+		//line sql.y:4172
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 601:
+	case 608:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4143
+		//line sql.y:4176
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 602:
+	case 609:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4147
+		//line sql.y:4180
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes), Length: yyDollar[2].optVal}
 		}
-	case 603:
+	case 610:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4151
+		//line sql.y:4184
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 604:
+	case 611:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4155
+		//line sql.y:4188
 		{
 			yyVAL.convertType = &ConvertType{Type: string(yyDollar[1].bytes)}
 		}
-	case 605:
+	case 612:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4160
+		//line sql.y:4193
 		{
 			yyVAL.expr = nil
 		}
-	case 606:
+	case 613:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4164
+		//line sql.y:4197
 		{
 			yyVAL.expr = yyDollar[1].expr
 		}
-	case 607:
+	case 614:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4169
+		//line sql.y:4202
 		{
 			yyVAL.str = string("")
 		}
-	case 608:
+	case 615:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4173
+		//line sql.y:4206
 		{
 			yyVAL.str = " separator '" + string(yyDollar[2].bytes) + "'"
 		}
-	case 609:
+	case 616:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4179
+		//line sql.y:4212
 		{
 			yyVAL.whens = []*When{yyDollar[1].when}
 		}
-	case 610:
+	case 617:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4183
+		//line sql.y:4216
 		{
 			yyVAL.whens = append(yyDollar[1].whens, yyDollar[2].when)
 		}
-	case 611:
+	case 618:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4189
+		//line sql.y:4222
 		{
 			yyVAL.when = &When{Cond: yyDollar[2].expr, Val: yyDollar[4].expr}
 		}
-	case 612:
+	case 619:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4194
+		//line sql.y:4227
 		{
 			yyVAL.expr = nil
 		}
-	case 613:
+	case 620:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4198
+		//line sql.y:4231
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 614:
+	case 621:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4204
+		//line sql.y:4237
 		{
 			yyVAL.colName = &ColName{Name: yyDollar[1].colIdent}
 		}
-	case 615:
+	case 622:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4208
+		//line sql.y:4241
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Name: yyDollar[1].tableIdent}, Name: yyDollar[3].colIdent}
 		}
-	case 616:
+	case 623:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:4212
+		//line sql.y:4245
 		{
 			yyVAL.colName = &ColName{Qualifier: TableName{Qualifier: yyDollar[1].tableIdent, Name: yyDollar[3].tableIdent}, Name: yyDollar[5].colIdent}
 		}
-	case 617:
+	case 624:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4218
+		//line sql.y:4251
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 618:
+	case 625:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4222
+		//line sql.y:4255
 		{
 			yyVAL.expr = NewHexVal(yyDollar[1].bytes)
 		}
-	case 619:
+	case 626:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4226
+		//line sql.y:4259
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 620:
+	case 627:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4230
+		//line sql.y:4263
 		{
 			yyVAL.expr = NewFloatVal(yyDollar[1].bytes)
 		}
-	case 621:
+	case 628:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4234
+		//line sql.y:4267
 		{
 			yyVAL.expr = NewHexNum(yyDollar[1].bytes)
 		}
-	case 622:
+	case 629:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4238
+		//line sql.y:4271
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 623:
+	case 630:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4242
+		//line sql.y:4275
 		{
 			yyVAL.expr = &NullVal{}
 		}
-	case 624:
+	case 631:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4248
+		//line sql.y:4281
 		{
 			// TODO(sougou): Deprecate this construct.
 			if yyDollar[1].colIdent.Lowered() != "value" {
@@ -6942,239 +7042,239 @@ yydefault:
 			}
 			yyVAL.expr = NewIntVal([]byte("1"))
 		}
-	case 625:
+	case 632:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4257
+		//line sql.y:4290
 		{
 			yyVAL.expr = NewIntVal(yyDollar[1].bytes)
 		}
-	case 626:
+	case 633:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4261
+		//line sql.y:4294
 		{
 			yyVAL.expr = NewValArg(yyDollar[1].bytes)
 		}
-	case 627:
+	case 634:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4266
+		//line sql.y:4299
 		{
 			yyVAL.exprs = nil
 		}
-	case 628:
+	case 635:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4270
+		//line sql.y:4303
 		{
 			yyVAL.exprs = yyDollar[3].exprs
 		}
-	case 629:
+	case 636:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4275
+		//line sql.y:4308
 		{
 			yyVAL.expr = nil
 		}
-	case 630:
+	case 637:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4279
+		//line sql.y:4312
 		{
 			yyVAL.expr = yyDollar[2].expr
 		}
-	case 631:
+	case 638:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4284
+		//line sql.y:4317
 		{
 			yyVAL.orderBy = nil
 		}
-	case 632:
+	case 639:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4288
+		//line sql.y:4321
 		{
 			yyVAL.orderBy = yyDollar[3].orderBy
 		}
-	case 633:
+	case 640:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4294
+		//line sql.y:4327
 		{
 			yyVAL.orderBy = OrderBy{yyDollar[1].order}
 		}
-	case 634:
+	case 641:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4298
+		//line sql.y:4331
 		{
 			yyVAL.orderBy = append(yyDollar[1].orderBy, yyDollar[3].order)
 		}
-	case 635:
+	case 642:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4304
+		//line sql.y:4337
 		{
 			yyVAL.order = &Order{Expr: yyDollar[1].expr, Direction: yyDollar[2].str}
 		}
-	case 636:
+	case 643:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4309
+		//line sql.y:4342
 		{
 			yyVAL.str = AscScr
 		}
-	case 637:
+	case 644:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4313
+		//line sql.y:4346
 		{
 			yyVAL.str = AscScr
 		}
-	case 638:
+	case 645:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4317
+		//line sql.y:4350
 		{
 			yyVAL.str = DescScr
 		}
-	case 639:
+	case 646:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4322
+		//line sql.y:4355
 		{
 			yyVAL.limit = nil
 		}
-	case 640:
+	case 647:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4326
+		//line sql.y:4359
 		{
 			yyVAL.limit = &Limit{Rowcount: yyDollar[2].expr}
 		}
-	case 641:
+	case 648:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4330
+		//line sql.y:4363
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[2].expr, Rowcount: yyDollar[4].expr}
 		}
-	case 642:
+	case 649:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4334
+		//line sql.y:4367
 		{
 			yyVAL.limit = &Limit{Offset: yyDollar[4].expr, Rowcount: yyDollar[2].expr}
 		}
-	case 643:
+	case 650:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4339
+		//line sql.y:4372
 		{
 			yyVAL.str = ""
 		}
-	case 644:
+	case 651:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4343
+		//line sql.y:4376
 		{
 			yyVAL.str = ForUpdateStr
 		}
-	case 645:
+	case 652:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4347
+		//line sql.y:4380
 		{
 			yyVAL.str = ShareModeStr
 		}
-	case 646:
+	case 653:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4360
+		//line sql.y:4393
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[2].values}
 		}
-	case 647:
+	case 654:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4364
+		//line sql.y:4397
 		{
 			yyVAL.ins = &Insert{Rows: yyDollar[1].selStmt}
 		}
-	case 648:
+	case 655:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4368
+		//line sql.y:4401
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Rows: yyDollar[2].selStmt}
 		}
-	case 649:
+	case 656:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:4373
+		//line sql.y:4406
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].values}
 		}
-	case 650:
+	case 657:
 		yyDollar = yyS[yypt-4 : yypt+1]
-		//line sql.y:4377
+		//line sql.y:4410
 		{
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[4].selStmt}
 		}
-	case 651:
+	case 658:
 		yyDollar = yyS[yypt-6 : yypt+1]
-		//line sql.y:4381
+		//line sql.y:4414
 		{
 			// Drop the redundant parenthesis.
 			yyVAL.ins = &Insert{Columns: yyDollar[2].columns, Rows: yyDollar[5].selStmt}
 		}
-	case 652:
+	case 659:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4388
+		//line sql.y:4421
 		{
 			yyVAL.columns = Columns{yyDollar[1].colIdent}
 		}
-	case 653:
+	case 660:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4392
+		//line sql.y:4425
 		{
 			yyVAL.columns = Columns{yyDollar[3].colIdent}
 		}
-	case 654:
+	case 661:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4396
+		//line sql.y:4429
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[3].colIdent)
 		}
-	case 655:
+	case 662:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:4400
+		//line sql.y:4433
 		{
 			yyVAL.columns = append(yyVAL.columns, yyDollar[5].colIdent)
 		}
-	case 656:
+	case 663:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4405
+		//line sql.y:4438
 		{
 			yyVAL.updateExprs = nil
 		}
-	case 657:
+	case 664:
 		yyDollar = yyS[yypt-5 : yypt+1]
-		//line sql.y:4409
+		//line sql.y:4442
 		{
 			yyVAL.updateExprs = yyDollar[5].updateExprs
 		}
-	case 658:
+	case 665:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4415
+		//line sql.y:4448
 		{
 			yyVAL.values = Values{yyDollar[1].valTuple}
 		}
-	case 659:
+	case 666:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4419
+		//line sql.y:4452
 		{
 			yyVAL.values = append(yyDollar[1].values, yyDollar[3].valTuple)
 		}
-	case 660:
+	case 667:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4425
+		//line sql.y:4458
 		{
 			yyVAL.valTuple = yyDollar[1].valTuple
 		}
-	case 661:
+	case 668:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4429
+		//line sql.y:4462
 		{
 			yyVAL.valTuple = ValTuple{}
 		}
-	case 662:
+	case 669:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4435
+		//line sql.y:4468
 		{
 			yyVAL.valTuple = ValTuple(yyDollar[2].exprs)
 		}
-	case 663:
+	case 670:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4441
+		//line sql.y:4474
 		{
 			if len(yyDollar[1].valTuple) == 1 {
 				yyVAL.expr = &ParenExpr{yyDollar[1].valTuple[0]}
@@ -7182,415 +7282,415 @@ yydefault:
 				yyVAL.expr = yyDollar[1].valTuple
 			}
 		}
-	case 664:
+	case 671:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4451
+		//line sql.y:4484
 		{
 			yyVAL.updateExprs = UpdateExprs{yyDollar[1].updateExpr}
 		}
-	case 665:
+	case 672:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4455
+		//line sql.y:4488
 		{
 			yyVAL.updateExprs = append(yyDollar[1].updateExprs, yyDollar[3].updateExpr)
 		}
-	case 666:
+	case 673:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4461
+		//line sql.y:4494
 		{
 			yyVAL.updateExpr = &UpdateExpr{Name: yyDollar[1].colName, Expr: yyDollar[3].expr}
 		}
-	case 667:
+	case 674:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4467
+		//line sql.y:4500
 		{
 			yyVAL.setExprs = SetExprs{yyDollar[1].setExpr}
 		}
-	case 668:
+	case 675:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4471
+		//line sql.y:4504
 		{
 			yyVAL.setExprs = append(yyDollar[1].setExprs, yyDollar[3].setExpr)
 		}
-	case 669:
+	case 676:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4477
+		//line sql.y:4510
 		{
 			yyVAL.setExpr = yyDollar[1].setExpr
 		}
-	case 670:
+	case 677:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4481
+		//line sql.y:4514
 		{
 			yyDollar[2].setExpr.Scope = yyDollar[1].str
 			yyVAL.setExpr = yyDollar[2].setExpr
 		}
-	case 671:
+	case 678:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4488
+		//line sql.y:4521
 		{
 			yyVAL.setExpr = &SetExpr{Type: yyDollar[1].colIdent, Val: &OptVal{Value: NewStrVal([]byte("on"))}}
 		}
-	case 672:
+	case 679:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4492
+		//line sql.y:4525
 		{
 			yyVAL.setExpr = &SetExpr{Type: yyDollar[1].colIdent, Val: &OptVal{Value: NewStrVal([]byte("off"))}}
 		}
-	case 673:
+	case 680:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4496
+		//line sql.y:4529
 		{
 			yyVAL.setExpr = &SetExpr{Type: yyDollar[1].colIdent, Val: &OptVal{Value: yyDollar[3].expr}}
 		}
-	case 674:
+	case 681:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4500
+		//line sql.y:4533
 		{
 			yyVAL.setExpr = &SetExpr{Type: NewColIdent(string(yyDollar[1].bytes)), Val: &OptVal{Value: yyDollar[2].expr}}
 		}
-	case 675:
+	case 682:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4504
+		//line sql.y:4537
 		{
 			yyVAL.setExpr = &SetExpr{Type: NewColIdent(string(yyDollar[1].bytes)), Val: &OptVal{Value: &CollateExpr{Expr: yyDollar[2].expr, Charset: yyDollar[3].str}}}
 		}
-	case 677:
+	case 684:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4511
+		//line sql.y:4544
 		{
 			yyVAL.bytes = []byte("charset")
 		}
-	case 678:
+	case 685:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4517
+		//line sql.y:4550
 		{
 			yyVAL.expr = NewStrVal([]byte(yyDollar[1].colIdent.String()))
 		}
-	case 679:
+	case 686:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4521
+		//line sql.y:4554
 		{
 			yyVAL.expr = NewStrVal(yyDollar[1].bytes)
 		}
-	case 680:
+	case 687:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4525
+		//line sql.y:4558
 		{
 			yyVAL.expr = &Default{}
 		}
-	case 681:
+	case 688:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4531
+		//line sql.y:4564
 		{
 			yyVAL.setExprs = SetExprs{&SetExpr{Type: NewColIdent(string(yyDollar[1].bytes)), Val: yyDollar[2].setVal}}
 		}
-	case 682:
+	case 689:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4535
+		//line sql.y:4568
 		{
 			yyVAL.setExprs = SetExprs{&SetExpr{Scope: yyDollar[1].str, Type: NewColIdent(string(yyDollar[2].bytes)), Val: yyDollar[3].setVal}}
 		}
-	case 683:
+	case 690:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4541
+		//line sql.y:4574
 		{
 			yyVAL.setVal = &TxnVal{Level: yyDollar[1].str, Mode: yyDollar[2].str}
 		}
-	case 684:
+	case 691:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4545
+		//line sql.y:4578
 		{
 			yyVAL.setVal = &TxnVal{Level: yyDollar[2].str, Mode: yyDollar[1].str}
 		}
-	case 685:
+	case 692:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4551
+		//line sql.y:4584
 		{
 			yyVAL.str = ""
 		}
-	case 686:
+	case 693:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4555
+		//line sql.y:4588
 		{
 			yyVAL.str = yyDollar[2].str
 		}
-	case 687:
+	case 694:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4561
+		//line sql.y:4594
 		{
 			yyVAL.str = yyDollar[3].str
 		}
-	case 688:
+	case 695:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4567
+		//line sql.y:4600
 		{
 			yyVAL.str = RepeatableRead
 		}
-	case 689:
+	case 696:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4571
+		//line sql.y:4604
 		{
 			yyVAL.str = ReadCommitted
 		}
-	case 690:
+	case 697:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4575
+		//line sql.y:4608
 		{
 			yyVAL.str = ReadUncommitted
 		}
-	case 691:
+	case 698:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4579
+		//line sql.y:4612
 		{
 			yyVAL.str = Serializable
 		}
-	case 692:
+	case 699:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4585
+		//line sql.y:4618
 		{
 			yyVAL.str = ""
 		}
-	case 693:
+	case 700:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4589
+		//line sql.y:4622
 		{
 			yyVAL.str = yyDollar[2].str
 		}
-	case 694:
+	case 701:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4595
+		//line sql.y:4628
 		{
 			yyVAL.str = TxReadWrite
 		}
-	case 695:
+	case 702:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4599
+		//line sql.y:4632
 		{
 			yyVAL.str = TxReadOnly
 		}
-	case 696:
+	case 703:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4605
+		//line sql.y:4638
 		{
 			yyVAL.str = SessionStr
 		}
-	case 697:
+	case 704:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4609
+		//line sql.y:4642
 		{
 			yyVAL.str = SessionStr
 		}
-	case 698:
+	case 705:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4613
+		//line sql.y:4646
 		{
 			yyVAL.str = GlobalStr
 		}
-	case 701:
+	case 708:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4622
+		//line sql.y:4655
 		{
 			yyVAL.byt = 0
 		}
-	case 702:
+	case 709:
 		yyDollar = yyS[yypt-2 : yypt+1]
-		//line sql.y:4626
+		//line sql.y:4659
 		{
 			yyVAL.byt = 1
 		}
-	case 703:
+	case 710:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4631
+		//line sql.y:4664
 		{
 			yyVAL.byt = 0
 		}
-	case 704:
+	case 711:
 		yyDollar = yyS[yypt-3 : yypt+1]
-		//line sql.y:4635
+		//line sql.y:4668
 		{
 			yyVAL.byt = 1
 		}
-	case 705:
+	case 712:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4640
+		//line sql.y:4673
 		{
 			yyVAL.str = ""
 		}
-	case 706:
+	case 713:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4644
+		//line sql.y:4677
 		{
 			yyVAL.str = IgnoreStr
 		}
-	case 707:
+	case 714:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4650
+		//line sql.y:4683
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 708:
+	case 715:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4654
+		//line sql.y:4687
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 709:
+	case 716:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4658
+		//line sql.y:4691
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 710:
+	case 717:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4662
+		//line sql.y:4695
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 711:
+	case 718:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4666
+		//line sql.y:4699
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 712:
+	case 719:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4670
+		//line sql.y:4703
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 713:
+	case 720:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4674
+		//line sql.y:4707
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 714:
+	case 721:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4678
+		//line sql.y:4711
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 715:
+	case 722:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4682
+		//line sql.y:4715
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 716:
+	case 723:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4686
+		//line sql.y:4719
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 717:
+	case 724:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4691
+		//line sql.y:4724
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 718:
+	case 725:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4695
+		//line sql.y:4728
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 719:
+	case 726:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4699
+		//line sql.y:4732
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 720:
+	case 727:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4705
+		//line sql.y:4738
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 721:
+	case 728:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4709
+		//line sql.y:4742
 		{
 			yyVAL.empty = struct{}{}
 		}
-	case 722:
+	case 729:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:4714
+		//line sql.y:4747
 		{
 			yyVAL.str = IndexStr
 		}
-	case 723:
+	case 730:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4718
+		//line sql.y:4751
 		{
 			yyVAL.str = UniqueStr
 		}
-	case 724:
+	case 731:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4724
+		//line sql.y:4757
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 725:
+	case 732:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4728
+		//line sql.y:4761
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 727:
+	case 734:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4735
+		//line sql.y:4768
 		{
 			yyVAL.colIdent = NewColIdent(string(yyDollar[1].bytes))
 		}
-	case 728:
+	case 735:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4741
+		//line sql.y:4774
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 729:
+	case 736:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4745
+		//line sql.y:4778
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 731:
+	case 738:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4752
+		//line sql.y:4785
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 732:
+	case 739:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4758
+		//line sql.y:4791
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 733:
+	case 740:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4762
+		//line sql.y:4795
 		{
 			yyVAL.tableIdent = NewTableIdent(string(yyDollar[1].bytes))
 		}
-	case 937:
+	case 945:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:4992
+		//line sql.y:5026
 		{
 			if incNesting(yylex) {
 				yylex.Error("max nesting level reached")
 				return 1
 			}
 		}
-	case 938:
+	case 946:
 		yyDollar = yyS[yypt-1 : yypt+1]
-		//line sql.y:5001
+		//line sql.y:5035
 		{
 			decNesting(yylex)
 		}
-	case 939:
+	case 947:
 		yyDollar = yyS[yypt-0 : yypt+1]
-		//line sql.y:5006
+		//line sql.y:5040
 		{
 			forceEOF(yylex)
 		}
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.y b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.y
index 83929516..7c454e22 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.y
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/sql.y
@@ -359,9 +359,10 @@ func forceEOF(yylex interface{}) {
 %token	<bytes>
 	DATE
 	ESCAPE
+	HELP
 	REPAIR
-	OPTIMIZE
 	TRUNCATE
+	OPTIMIZE
 
 // Type Tokens
 %token	<bytes>
@@ -547,9 +548,10 @@ func forceEOF(yylex interface{}) {
 	describe_statement
 	explain_statement
 	explainable_statement
+	help_statement
 	kill_statement
-	transaction_statement
 	radon_statement
+	transaction_statement
 
 %token	<bytes>
 	ENGINES
@@ -929,6 +931,7 @@ func forceEOF(yylex interface{}) {
 
 %type	<optVal>
 	id_or_string
+	id_or_string_opt
 
 %type	<str>
 	opt_charset
@@ -1079,6 +1082,7 @@ command:
 |	xa_statement
 |	describe_statement
 |	explain_statement
+|	help_statement
 |	kill_statement
 |	transaction_statement
 |	radon_statement
@@ -3045,6 +3049,35 @@ explain_statement:
 		$$ = &Explain{Type: ExplainTypeEmpty, Analyze: true, Statement: $6}
 	}
 
+id_or_string_opt:
+	{
+		$$ = nil
+	}
+|	ID
+	{
+		// Normal str as an identify, without quote
+		$$ = NewStrValWithoutQuote($1)
+	}
+|	STRING
+	{
+		// Str with Quote, it will be parsed by Lex begin with quote \' or \"
+		$$ = NewStrVal($1)
+	}
+|	reserved_keyword
+	{
+		$$ = NewStrValWithoutQuote($1)
+	}
+|	non_reserved_keyword
+	{
+		$$ = NewStrValWithoutQuote($1)
+	}
+
+help_statement:
+	HELP id_or_string_opt
+	{
+		$$ = &Help{HelpInfo: $2}
+	}
+
 kill_opt:
 	{}
 |	QUERY
@@ -4819,6 +4852,7 @@ reserved_keyword:
 |	FULL
 |	GROUP
 |	HAVING
+|	HELP
 |	IF
 |	IGNORE
 |	IN
diff --git a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/token.go b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/token.go
index 70c644c2..92bb22a6 100644
--- a/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/token.go
+++ b/src/vendor/github.com/xelabs/go-mysqlstack/sqlparser/token.go
@@ -194,6 +194,7 @@ var keywords = map[string]int{
 	"gtid":                GTID,
 	"hash":                HASH,
 	"having":              HAVING,
+	"help":                HELP,
 	"high_priority":       UNUSED,
 	"hour_microsecond":    UNUSED,
 	"hour_minute":         UNUSED,
diff --git a/src/xbase/querytypes.go b/src/xbase/querytypes.go
index bfa84d4b..d9d73373 100644
--- a/src/xbase/querytypes.go
+++ b/src/xbase/querytypes.go
@@ -31,6 +31,9 @@ const (
 	// EXPLAIN type.
 	EXPLAIN = "EXPLAIN"
 
+	// HELP type.
+	HELP = "HELP"
+
 	// KILL type.
 	KILL = "KILL"