parser: support sysdate

pingcap · Sep 23, 2015 · 91e6610 · 91e6610
1 parent a7b839d
commit 91e6610
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Showing 3 changed files with 19 additions and 0 deletions.
diff --git a/parser/parser.y b/parser/parser.y
@@ -209,6 +209,7 @@ import (
 	substring	"SUBSTRING"
 	sum		"SUM"
 	sysVar		"SYS_VAR"
+	sysDate		"SYSDATE"
 	tableKwd	"TABLE"
 	tables		"TABLES"
 	then		"THEN"
@@ -2257,6 +2258,20 @@ FunctionCallNonKeyword:
 			Len: $7.(expression.Expression),
 		}	
 	}
+|	"SYSDATE" '(' ExpressionOpt ')'
+	{
+		args := []expression.Expression{}
+		if $3 != nil {
+			args = append(args, $3.(expression.Expression))
+		}
+		var err error
+		$$, err = expression.NewCall($1.(string), args, false)
+		if err != nil {
+			l := yylex.(*lexer)
+			l.err(err)
+			return 1
+		}
+	}
 |	"WEEKDAY" '(' Expression ')'
 	{
 		args := []expression.Expression{$3.(expression.Expression)}

diff --git a/parser/parser_test.go b/parser/parser_test.go
@@ -363,6 +363,7 @@ func (s *testParserSuite) TestParser0(c *C) {
 		{"select current_timestamp(6)", true},
 		{"select now()", true},
 		{"select now(6)", true},
+		{"select sysdate(), sysdate(6)", true},
 	}
 
 	for _, t := range table {

diff --git a/parser/scanner.l b/parser/scanner.l
@@ -354,6 +354,7 @@ some		{s}{o}{m}{e}
 start		{s}{t}{a}{r}{t}
 substring	{s}{u}{b}{s}{t}{r}{i}{n}{g}
 sum		{s}{u}{m}
+sysdate		{s}{y}{s}{d}{a}{t}{e}
 table		{t}{a}{b}{l}{e}
 tables		{t}{a}{b}{l}{e}{s}
 then		{t}{h}{e}{n}
@@ -689,6 +690,8 @@ sys_var		"@@"(({global}".")|({session}".")|{local}".")?{ident}
 			return substring
 {sum}			lval.item = string(l.val)
 			return sum
+{sysdate}		lval.item = string(l.val)
+			return sysDate
 {table}			return tableKwd
 {tables}		lval.item = string(l.val)
 			return tables