mysql--多表联合删除，出错：Unknown table 'users' in MULTI DELETE

delete users from users u left join blog b on u.id=b.uid where b.id is NULL;html 出错：ERROR 1109 (42S02): Unknown table 'users' in MULTI DELETEui 改成：htm delete u from users u left join blog b on u.id=b.

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