MySQL Delete 优化求教

[az]

DELETE from translation_entries where id in
    (select entry_id from translation_map where key_id in 
        (
            select id from translation_keys where package_id = 'package_id'
        )
    )

这一句连用了几个 where in ，速度很慢，如果优化？

[hcymk2]

http://www.mysqltutorial.org/mysql-delete-join/