What are the mysql statements to delete data?

MySQL statements for deleting data include: 1. Delete statement, used to delete records that meet specified conditions from the table, code example "DELETE FROM table name WHERE condition"; 2. Truncate statement, used for quick deletion All records in the table, code example "TRUNCATE TABLE table name".

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In MySQL, you can use the following statements to delete data:

1. DELETE: The Delete statement is used to delete records that meet specified conditions from the table. Example:

   DELETE FROM 表名 WHERE 条件;

Where "table name" is the name of the table to delete data, "condition" is optional and is used to specify the conditions for deleting records.

2. TRUNCATE: The Truncate statement is used to quickly delete all records in the table. Example:

   TRUNCATE TABLE 表名;

Where "table name" is the name of the table where data is to be deleted.

It should be noted that the difference between DELETE and TRUNCATE is:

• DELETE is a DML (Data Manipulation Language) statement. Each time a row is deleted and recorded in the transaction log, it can be Rollback operation.
• TRUNCATE is a DDL (Data Definition Language) statement. Deleting the data of the entire table at one time is not recorded in the transaction log, and the operation cannot be rolled back. It is more efficient than the DELETE statement, but cannot trigger the associated trigger.

Before using any delete statements, please be careful and make sure you back up important data to avoid accidental deletion or loss of data.

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