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ROLLBACK

This statement reverts all changes in the current transaction inside of TIDB. It is the opposite of a COMMIT statement.

Synopsis

RollbackStmt
ROLLBACKCompletionTypeWithinTransaction
CompletionTypeWithinTransaction
ANDCHAINNORELEASENOCHAINNORELEASENORELEASE

Examples

mysql> CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY); Query OK, 0 rows affected (0.12 sec) mysql> BEGIN; Query OK, 0 rows affected (0.00 sec) mysql> INSERT INTO t1 VALUES (1); Query OK, 1 row affected (0.00 sec) mysql> ROLLBACK; Query OK, 0 rows affected (0.01 sec) mysql> SELECT * FROM t1; Empty set (0.01 sec)

MySQL compatibility

  • TiDB does not support savepoints or the syntax ROLLBACK TO SAVEPOINT.
  • TiDB parses but ignores the syntax ROLLBACK AND [NO] RELEASE. This functionality is used in MySQL to disconnect the client session immediately after rolling back the transaction. In TiDB, it is recommended to instead use the mysql_close() functionality of your client driver.
  • TiDB parses but ignores the syntax ROLLBACK AND [NO] CHAIN. This functionality is used in MySQL to immediately start a new transaction with the same isolation level while the current transaction is being rolled back. In TiDB, it is recommended to instead start a new transaction.

See also

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