ddl: create partition table fail with strconv.ParseInt invalid syntax (…

…pingcap#16436) (pingcap#16498)

ddl/db_partition_test.go

@@ -261,6 +261,23 @@ func (s *testIntegrationSuite9) TestCreateTableWithPartition(c *C) {
 		PARTITION p2 VALUES LESS THAN (2000),
 		PARTITION p3 VALUES LESS THAN (2005)
 	);`, tmysql.ErrBadField)
+
+	// Fix a timezone dependent check bug introduced in https://github.com/pingcap/tidb/pull/10655
+	tk.MustExec(`create table t34 (dt timestamp(3)) partition by range (floor(unix_timestamp(dt))) (
+		partition p0 values less than (unix_timestamp('2020-04-04 00:00:00')),
+		partition p1 values less than (unix_timestamp('2020-04-05 00:00:00')));`)
+
+	tk.MustGetErrCode(`create table t35 (dt timestamp(3)) partition by range (unix_timestamp(date(dt))) (
+		partition p0 values less than (unix_timestamp('2020-04-04 00:00:00')),
+		partition p1 values less than (unix_timestamp('2020-04-05 00:00:00')));`, tmysql.ErrWrongExprInPartitionFunc)
+
+	tk.MustGetErrCode(`create table t35 (dt datetime) partition by range (unix_timestamp(dt)) (
+		partition p0 values less than (unix_timestamp('2020-04-04 00:00:00')),
+		partition p1 values less than (unix_timestamp('2020-04-05 00:00:00')));`, tmysql.ErrWrongExprInPartitionFunc)
+
+	// Fix https://github.com/pingcap/tidb/issues/16333
+	tk.MustExec(`create table t35 (dt timestamp) partition by range (unix_timestamp(dt))
+(partition p0 values less than (unix_timestamp('2020-04-15 00:00:00')));`)
 }
 
 func (s *testIntegrationSuite7) TestCreateTableWithHashPartition(c *C) {

ddl/partition.go

@@ -330,7 +330,7 @@ func checkPartitionFuncType(ctx sessionctx.Context, s *ast.CreateTableStmt, cols
 // Side effect: it may simplify the partition range definition from a constant expression to an integer.
 func checkCreatePartitionValue(ctx sessionctx.Context, tblInfo *model.TableInfo, pi *model.PartitionInfo, cols []*table.Column) error {
 	defs := pi.Definitions
-	if len(defs) <= 1 {
+	if len(defs) == 0 {
 		return nil
 	}