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Revert "ddl: fix create partition table error under NO_UNSIGNED_SUBTRACTION" (#26935) #27100

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merged 2 commits into from
Oct 12, 2021
Merged

Revert "ddl: fix create partition table error under NO_UNSIGNED_SUBTRACTION" (#26935) #27100

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8536901
cherry pick #26935 to release-5.2
xiongjiwei Aug 10, 2021
83f0f1f
Merge branch 'release-5.2' into release-5.2-bb32631b6af8
ti-chi-bot Oct 12, 2021
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5 changes: 2 additions & 3 deletions ddl/partition.go
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Original file line number Diff line number Diff line change
Expand Up @@ -524,7 +524,7 @@ func checkPartitionValuesIsInt(ctx sessionctx.Context, def *ast.PartitionDefinit
switch val.Kind() {
case types.KindUint64, types.KindNull:
case types.KindInt64:
if !ctx.GetSessionVars().SQLMode.HasNoUnsignedSubtractionMode() && mysql.HasUnsignedFlag(tp.Flag) && val.GetInt64() < 0 {
if mysql.HasUnsignedFlag(tp.Flag) && val.GetInt64() < 0 {
return ErrPartitionConstDomain.GenWithStackByArgs()
}
default:
Expand Down Expand Up @@ -666,8 +666,7 @@ func checkRangePartitionValue(ctx sessionctx.Context, tblInfo *model.TableInfo)
if strings.EqualFold(defs[len(defs)-1].LessThan[0], partitionMaxValue) {
defs = defs[:len(defs)-1]
}
// treat partition value under NoUnsignedSubtractionMode as signed
isUnsigned := isColUnsigned(cols, pi) && !ctx.GetSessionVars().SQLMode.HasNoUnsignedSubtractionMode()
isUnsigned := isColUnsigned(cols, pi)
var prevRangeValue interface{}
for i := 0; i < len(defs); i++ {
if strings.EqualFold(defs[i].LessThan[0], partitionMaxValue) {
Expand Down
49 changes: 18 additions & 31 deletions table/tables/partition_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ import (
. "github.com/pingcap/check"
"github.com/pingcap/parser/model"
"github.com/pingcap/tidb/ddl"
mysql "github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/sessionctx/binloginfo"
"github.com/pingcap/tidb/table"
Expand Down Expand Up @@ -447,41 +448,27 @@ func (ts *testSuite) TestCreatePartitionTableNotSupport(c *C) {
c.Assert(ddl.ErrPartitionFunctionIsNotAllowed.Equal(err), IsTrue)
}

// issue 24880
func (ts *testSuite) TestRangePartitionUnderNoUnsignedSub(c *C) {
func (ts *testSuite) TestRangePartitionUnderNoUnsigned(c *C) {
tk := testkit.NewTestKitWithInit(c, ts.store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t2;")
tk.MustExec("drop table if exists tu;")
defer tk.MustExec("drop table if exists t2;")
defer tk.MustExec("drop table if exists tu;")
tk.MustExec("SET @@sql_mode='NO_UNSIGNED_SUBTRACTION';")
tk.MustExec(`CREATE TABLE tu (c1 BIGINT UNSIGNED) PARTITION BY RANGE(c1 - 10) (
PARTITION p0 VALUES LESS THAN (-5),
PARTITION p1 VALUES LESS THAN (0),
PARTITION p2 VALUES LESS THAN (5),
PARTITION p3 VALUES LESS THAN (10),
PARTITION p4 VALUES LESS THAN (MAXVALUE)
);`)
// currently not support insert records whose partition value is negative
ErrMsg1 := "[types:1690]BIGINT UNSIGNED value is out of range in '(tu.c1 - 10)'"
tk.MustGetErrMsg("insert into tu values (0);", ErrMsg1)
tk.MustGetErrMsg("insert into tu values (cast(1 as unsigned));", ErrMsg1)
tk.MustExec(("insert into tu values (cast(9223372036854775807 as unsigned));"))
// MySQL will not support c1 value bigger than 9223372036854775817 in this case
tk.MustExec(("insert into tu values (cast(18446744073709551615 as unsigned));"))

// test `create table like`
ErrMsg2 := "[types:1690]BIGINT UNSIGNED value is out of range in '(tu2.c1 - 10)'"
tk.MustExec(`CREATE TABLE tu2 like tu;`)
// currently not support insert records whose partition value is negative
tk.MustGetErrMsg("insert into tu2 values (0);", ErrMsg2)
tk.MustGetErrMsg("insert into tu2 values (cast(1 as unsigned));", ErrMsg2)
tk.MustExec(("insert into tu2 values (cast(9223372036854775807 as unsigned));"))
// MySQL will not support c1 value bigger than 9223372036854775817 in this case
tk.MustExec(("insert into tu2 values (cast(18446744073709551615 as unsigned));"))

// compatible with MySQL
ErrMsg3 := "[ddl:1493]VALUES LESS THAN value must be strictly increasing for each partition"
tk.MustExec("SET @@sql_mode='';")
tk.MustGetErrMsg(`CREATE TABLE tu3 like tu;`, ErrMsg3)
tk.MustExec(`create table t2 (a bigint unsigned) partition by range (a) (
partition p1 values less than (0),
partition p2 values less than (1),
partition p3 values less than (18446744073709551614),
partition p4 values less than (18446744073709551615),
partition p5 values less than maxvalue);`)
tk.MustExec("insert into t2 values(10);")
tk.MustGetErrCode(`CREATE TABLE tu (c1 BIGINT UNSIGNED) PARTITION BY RANGE(c1 - 10) (
PARTITION p0 VALUES LESS THAN (-5),
PARTITION p1 VALUES LESS THAN (0),
PARTITION p2 VALUES LESS THAN (5),
PARTITION p3 VALUES LESS THAN (10),
PARTITION p4 VALUES LESS THAN (MAXVALUE));`, mysql.ErrPartitionConstDomain)
}

func (ts *testSuite) TestIntUint(c *C) {
Expand Down