文章分类 -  数据仓库

摘要:查询重复记录select count(A) from table group by A having count(A)>1或者select count(*) from table where 具体日期 and 关键唯一字段 in(select 关键唯一字段 from table where 具体日期 阅读全文
posted @ 2022-03-24 18:07 bro 阅读(86) 评论(0) 推荐(0)