删除并加入

Question

我搜索了答案，但找不到我做错了什么，我一直在出错；

DELETE 
FROM kp_postmeta 
JOIN kp_posts 
ON kp_postmeta.post_id = kp_posts.ID
WHERE (kp_posts.post_type = 'flamingo_inbound' AND kp_posts.post_date < '2014-12-31')

谁能告诉我哪里做错了？

Answer 1

您需要在 delete 之后指定要从哪些表中删除。如果从两者来看，它看起来像这样

DELETE kp_postmeta, kp_posts 
FROM kp_postmeta 
JOIN kp_posts ON kp_postmeta.post_id = kp_posts.ID
WHERE kp_posts.post_type = 'flamingo_inbound' 
AND kp_posts.post_date < '2014-12-31'

删除并加入

Delete with join

mysql

join

sql-delete