What is the command to clear table data in sql

The command to clear table data in SQL is DELETE, and its syntax is: DELETE FROM table_name WHERE condition;. This command permanently deletes all data in the table or rows with specified conditions, so be careful when using it. To clear the entire table's data, the WHERE clause can be omitted.

The command to clear table data in SQL

The SQL command to delete all data in the table isDELETE . The syntax is as follows:

DELETE FROM table_name
WHERE condition;

Among them:

• table_name is the name of the table to clear the data.
• condition is optional and specifies which rows to delete. If no condition is specified, all rows in the table will be deleted.

Example:

To clear all data in the table named users, you can use the following command:

DELETE FROM users;

Note:

• DELETE The command is a permanent operation. Once executed, the data will not be recoverable.
• Be careful when using the DELETE command, especially if the table contains important data.
• If you want to delete specific rows in the table, you can use the WHERE clause to specify the deletion conditions.
• If you want to clear all the data in the table without deleting the table itself, you can use the TRUNCATE TABLE command. TRUNCATE TABLE is faster than DELETE because it does not perform row-by-row deletion.

The above is the detailed content of What is the command to clear table data in sql. For more information, please follow other related articles on the PHP Chinese website!