Help Center> GaussDB> Distributed_8.x> SQL Reference> Controlling Transactions
Updated on 2024-06-03 GMT+08:00

Controlling Transactions

A transaction is a user-defined sequence of database operations, which form an integral unit of work.

Starting a Transaction

GaussDB starts a transaction using START TRANSACTION and BEGIN. For details, see START TRANSACTION and BEGIN.

Setting a Transaction

GaussDB sets a transaction using SET TRANSACTION or SET LOCAL TRANSACTION. For details, see SET TRANSACTION.

Committing a Transaction

GaussDB commits all operations of a transaction using COMMIT or END. For details, see COMMIT | END.

Rolling Back a Transaction

If a fault occurs during a transaction and the transaction cannot proceed, the system performs rollback to cancel all the completed database operations related to the transaction. For details, see ROLLBACK.

If an execution request (not in a transaction block) received in the database contains multiple statements, the request is packed into a transaction. If one of the statements fails, the entire request will be rolled back.