摘要: 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 ) 阅读全文
posted @ 2021-05-08 17:12 博客YS 阅读(63) 评论(0) 推荐(0) 编辑