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Delete the data and find that the data file has not shrunk. At this time, you need to organize the table, and the space will be reclaimed.

# the myisam engine uses the following statement

OPTIMIZE TABLE tmp_corp_product

# innodb fragment removal method

ALTER TABLE tablename ENGINE=InnoDB

Analyze table tablename

For details, please refer to

Http://www.365mini.com/page/mysql-optimize-table.htm

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