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REPLACE

The REPLACE statement is semantically a combined DELETE+INSERT statement. It can be used to simplify application code.

Synopsis

ReplaceIntoStmt
REPLACEPriorityOptIntoOptTableNamePartitionNameListOptInsertValues
PriorityOpt
LOW_PRIORITYHIGH_PRIORITYDELAYED
IntoOpt
INTO
TableName
Identifier.Identifier
PartitionNameListOpt
PARTITION(Identifier,)
InsertValues
(ColumnNameListOpt)ValueSymValuesListSelectStmt(SelectStmt)UnionStmtSelectStmt)ValueSymValuesListSelectStmtUnionStmtSETColumnSetValue,ColumnSetValue

Examples

mysql> CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL); Query OK, 0 rows affected (0.12 sec) mysql> INSERT INTO t1 (c1) VALUES (1), (2), (3); Query OK, 3 rows affected (0.02 sec) Records: 3 Duplicates: 0 Warnings: 0 mysql> SELECT * FROM t1; +----+----+ | id | c1 | +----+----+ | 1 | 1 | | 2 | 2 | | 3 | 3 | +----+----+ 3 rows in set (0.00 sec) mysql> REPLACE INTO t1 (id, c1) VALUES(3, 99); Query OK, 2 rows affected (0.01 sec) mysql> SELECT * FROM t1; +----+----+ | id | c1 | +----+----+ | 1 | 1 | | 2 | 2 | | 3 | 99 | +----+----+ 3 rows in set (0.00 sec)

MySQL compatibility

The REPLACE statement in TiDB is fully compatible with MySQL. If you find any compatibility differences, report a bug.

See also

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