Khóa học miễn phí H2 Database – Rollback nhận dự án làm có lương

H2 Database – Rollback



ROLLBACK is a command from the SQL grammar used to roll back the transaction to a Savepoint or to the previous transaction. By using this command, we can either roll back to the specific Savepoint or we can roll back to the previous executed transaction.

Syntax

There are two different syntaxes for ROLLABCK command.

Following is the generic syntax for the rollback command.

ROLLBACK [ TO SAVEPOINT savepointName ]

Following is the generic syntax of the Rollback command to the specific transaction.

ROLLBACK TRANSACTION transactionName

Example 1

In this example, we will roll back the current transaction to a Savepoint named sp1_test using the following command.

ROLLBACK sp1_test;

The above command produces the following output.

Rollback successfully

Example 2

In the following example, we will roll back the complete transaction named tx_test using the given command.

ROLLBACK TRANSACTION tx_test;

The above command produces the following output.

Rollback successfully

Khóa học lập trình tại Toidayhoc vừa học vừa làm dự án vừa nhận lương: Khóa học lập trình nhận lương tại trung tâm Toidayhoc

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *