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To clear all data from a MySQL table, you can use the TRUNCATE TABLE statement. This command is more efficient than using the DELETE statement without a WHERE clause because it drops and recreates the table, rather than deleting rows one by one1.
Example
TRUNCATE TABLE table_name;This command will remove all rows from the specified table and reset any AUTO_INCREMENT counters1.
Important Considerations
Efficiency: TRUNCATE TABLE is faster than DELETE because it doesn't scan each row before deletion1.
Auto-Increment Reset: The AUTO_INCREMENT counter is reset to its initial value1.
Foreign Key Constraints: If there are any foreign key constraints, the TRUNCATE TABLE statement will fail2.
Implicit Commit: This operation causes an implicit commit and cannot be rolled back2.
Triggers: The TRUNCATE TABLE statement does not fire DELETE triggers associated with the table2.
For example, to clear all data from a table named books, you would use:
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