Mysql：使用IN子查询DELETE

Question

DELETE FROM images WHERE image_id IN(
    (SELECT i.image_id FROM images i
    LEFT JOIN ads a ON i.ad_id=a.id
        WHERE ISNULL(a.id))
)

我需要完成此查询。任何帮助将不胜感激。谢谢;）

Answer 1

DELETE i
    FROM images i
        LEFT JOIN ads a ON i.ad_id=a.id
    WHERE ISNULL(a.id)