mysql比较作呕的一个delete in操作

mysql比较恶心的一个delete in操作

mysql中

delete from sns_hits where id not in （1，2，3）

是没有问题的

delete from sns_hits where id not in （select id from another_table）

也是麽有问题的

但是

delete from sns_hits where id not in (select id from sns_hits) 

就TMD有问题了

解决棒法是创建临时表

CREATE TEMPORARY TABLE tmp_sns_hits (
  `id` BIGINT(20) 
)

太丫恶心了

1 楼 不是流氓 2009-07-19  

delete from sns_hits where id not in (select id from sns_hits)   

有这样的需求

2 楼 xly_971223 2009-07-19  

不是流氓 写道

delete from sns_hits where id not in (select id from sns_hits)   

有这样的需求

后面的select 加个where怎么养？

3 楼 kjj 2009-07-20  

delete from sns_hits where id not in (select id from sns_hits)  

好神奇哦，作者用这个语句来干什么啊

从这个表里删除不在这个表里的元素？

4 楼 仅此而已 2012-08-21  

起个别名就好！

DELETE   FROM t_tag

WHERE id NOT IN (SELECT * FROM (SELECT MAX(t .id) AS id FROM t_tag t GROUP BY tagname)t)