mysql 表中重复数据过滤
摘要:
表结构: 操作语句: SET SQL_SAFE_UPDATES = 0; eg1:delete from ybtest.student where id not in( select minId from ( select min(id) as minid from ybtest.student g 阅读全文
posted @ 2020-04-26 11:29 Frank- 阅读(1675) 评论(0) 推荐(0) 编辑