摘要: 查询数据库中某一列有没有重复数据项: select * from cd_stock where stock_bh in (select stock_bh from cd_stock group by stock_bh having count(stock_bh) >1 ) select * from 阅读全文
posted @ 2018-02-12 17:29 bingege 阅读(957) 评论(0) 推荐(0) 编辑