Is mysql automatically submitted?

mysql is automatically submitted. Methods to turn off automatic submission: 1. Use the SET AUTOCOMMIT = 0; statement; 2. Use the COMMIT; statement; 3. Use the ROLLBACK; statement.

The operating environment of this tutorial: windows10 system, mysql8.0.16 version, DELL G3 computer.

MySQL is a relational database management system commonly used to store and manage large amounts of data. A common question when using MySQL is whether to do autocommit. In this article, we will explore whether MySQL automatically commits transactions and how to control the commit behavior through settings.

For MySQL, automatic commit is the default behavior. This means that each SQL statement automatically commits a transaction to ensure data consistency and durability. When an INSERT, UPDATE, or DELETE statement is executed, MySQL automatically commits these changes to the database.

The advantage of automatic submission is simplicity and convenience. Since each statement is an independent transaction, we don't need to manually call the commit command between each change. This greatly reduces the amount of code and reduces the risk of errors.

However, sometimes we may want to process multiple statements as a transaction. In this case, we can control the submission behavior by turning off automatic submission.

To turn off automatic submission, you can use the following statement:

SET AUTOCOMMIT = 0;

In this way, we will execute each statement Then manually call the commit command to save the changes to the database. To commit a transaction, you can use the following statement:

COMMIT;

Please note that before manually committing, we can execute multiple statements and return at any time Roll transaction to undo all changes. To roll back a transaction, you can use the following statement:

ROLLBACK;

The advantage of turning off automatic commit and manual commit is that we can more precisely control the boundaries of the transaction. This is important for operations that require consistency and integrity. For example, if we insert a new record in the database, and update that record immediately after the insertion, we want these two operations to occur as a whole to avoid data inconsistency.

A common use case for transactions is database backup and recovery. Before backing up the database, we can turn off autocommit and roll back the transaction after completing the backup to ensure the consistency of the database.

Another scenario where automatic submission is used is concurrency control. When multiple users make changes to the same data at the same time, we can use transactions to ensure that only one user can commit the changes. This prevents data inconsistencies and conflicts.

In short, MySQL automatically commits by default. This makes operation simple and convenient, but sometimes we may need more precise control over submission behavior. By turning off autocommit and manually committing transactions, we can achieve more advanced database management and control .

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