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7.2.18. Speed of DELETE Statements

The time required to delete individual rows is exactly proportional to the number of indexes. To delete rows more quickly, you can increase the size of the key cache by increasing the key_buffer_size system variable. See Section 7.5.2, “Tuning Server Parameters”.

To delete all rows from a table, TRUNCATE TABLE tbl_name if faster than than DELETE FROM tbl_name. See Section 13.2.9, “TRUNCATE Syntax”.


 
 
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