标签：rgb rgba null div group by sele span count delete
delete from 表名 a where 列名 in ( select t.列名 from (select 列名 ,count(*) from 表名 where 列名 is not null group by 列名 having count(*) > 1) t )
标签：rgb rgba null div group by sele span count delete
原文地址：https://www.cnblogs.com/yuanshuo/p/14745779.html
