ddl: fix prepare stmt with partition related ddl stmts (pingcap#54493)

close pingcap#54283

Author: Defined2014

ast/ast.go

@@ -44,6 +44,7 @@ type Node interface {
 	// SetText sets original text to the Node.
 	SetText(enc charset.Encoding, text string)
 	// SetOriginTextPosition set the start offset of this node in the origin text.
+	// Only be called when `parser.lexer.skipPositionRecording` equals to false.
 	SetOriginTextPosition(offset int)
 	// OriginTextPosition get the start offset of this node in the origin text.
 	OriginTextPosition() int

parser.go

@@ -2124,7 +2124,6 @@ AlterTableSpecSingleOpt:
 		startOffset := parser.yyVAL.offset
 		endOffset := parser.yylval.offset
 		partitionMethod.SetText(parser.lexer.client, parser.src[startOffset:endOffset])
-		partitionMethod.SetOriginTextPosition(startOffset)
 		$$ = &ast.AlterTableSpec{
 			Tp:        ast.AlterTableReorganizeLastPartition,
 			Partition: &ast.PartitionOptions{PartitionMethod: partitionMethod},
@@ -2136,8 +2135,6 @@ AlterTableSpecSingleOpt:
 		startOffset := parser.yyVAL.offset
 		endOffset := parser.yylval.offset
 		partitionMethod.SetText(parser.lexer.client, parser.src[startOffset:endOffset])
-		// Needed for replacing syntactic sugar with generated partitioning definition string
-		partitionMethod.SetOriginTextPosition(startOffset)
 		$$ = &ast.AlterTableSpec{
 			Tp:        ast.AlterTableReorganizeFirstPartition,
 			Partition: &ast.PartitionOptions{PartitionMethod: partitionMethod},
@@ -2318,8 +2315,6 @@ AlterTableSpec:
 		startOffset := parser.yyVAL.offset
 		endOffset := parser.yylval.offset
 		partitionMethod.SetText(parser.lexer.client, parser.src[startOffset:endOffset])
-		// Needed for replacing syntactic sugar with generated partitioning definition string
-		partitionMethod.SetOriginTextPosition(startOffset)
 		$$ = &ast.AlterTableSpec{
 			NoWriteToBinlog: noWriteToBinlog,
 			Tp:              ast.AlterTableAddLastPartition,
@@ -2406,8 +2401,6 @@ AlterTableSpec:
 		startOffset := parser.yyVAL.offset
 		endOffset := parser.yylval.offset
 		partitionMethod.SetText(parser.lexer.client, parser.src[startOffset:endOffset])
-		// Needed for replacing syntactic sugar with generated partitioning definition string
-		partitionMethod.SetOriginTextPosition(startOffset)
 		$$ = &ast.AlterTableSpec{
 			IfExists:  $8.(bool),
 			Tp:        ast.AlterTableDropFirstPartition,
@@ -4713,8 +4706,6 @@ PartitionIntervalOpt:
 		startOffset := parser.yyVAL.offset
 		endOffset := parser.yylval.offset
 		partitionInterval.SetText(parser.lexer.client, parser.src[startOffset:endOffset])
-		// Needed for replacing syntactic sugar with generated partitioning definition string
-		partitionInterval.SetOriginTextPosition(startOffset)
 		$$ = partitionInterval
 	}