摘要: 示例使用 # 查询student表中 stu_id重复的记录 select count(stu_id) as idcount , stu_id from student group by stu_id having idcount > 1 阅读全文
posted @ 2022-05-26 11:07 Angel挤一挤 阅读(1739) 评论(0) 推荐(0) 编辑