Replace DELETE FROM to TRUNCATE to empty woocommerce_sessions table #10603
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If the size of the woocommerce_sessions table is 3.2 GB before the Clear all sessions button is clicked, then it will delete all rows, but leave the table size 3.2. Truncating/emptying the table resets the size of the table, and deletes all rows.
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If the size of the woocommerce_sessions table is 3.4 GB before the
Clear all sessions button is clicked, then it will delete all rows, but
leave the table size 3.3 GB. Truncating/emptying the table resets the size
of the table, and deletes all rows.
Before delete:
After delete:
After truncate: