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Besides START TRANSACTION, which statement is used to start a transaction?

王林
王林forward
2023-08-26 16:45:031363browse

除了 START TRANSACTION 之外,哪个语句用于启动事务?

We can also use the BEGIN statement to start a new transaction. It is the same as the START TRANSACTION statement.

Example

mysql> BEGIN;
Query OK, 0 rows affected (0.00 sec)

mysql> INSERT INTO Marks Values(1, 'Aarav','History',40);
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO Marks Values(2, 'Harshit','History',48);
Query OK, 1 row affected (0.00 sec)

mysql> ROLLBACK;
Query OK, 0 rows affected (0.04 sec)

In this example, the transaction is started by the BEGIN statement instead of the START TRANSACTION statement. Then execute two INSERT statements, followed by a ROLLBACK statement. The ROLLBACK statement will undo the changes made to the database, which can be observed from the following result set, which shows that no new values ​​were inserted into the table -

mysql> SELECT * FROM Marks;
+------+---------+---------+-------+
| Id   | Name    | Subject | Marks |
+------+---------+---------+-------+
|    1 | Aarav   | Maths   |    50 |
|    2 | Harshit | Maths   |    55 |
+------+---------+---------+-------+
2 rows in set (0.00 sec)

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