摘要: select * from table1 t where (select count(*) from table1 where column1=t.column1 AND column2=t.column2 and column3=t.column3)>1 阅读全文
posted @ 2019-11-22 11:30 enjoryWeb 阅读(2558) 评论(0) 推荐(0) 编辑