select u_id, count(distinct u_role) from t.table group by u_role;
黑色头发:http://heisetoufa.iteye.com/
确定删除《mysql 去除查询结果重复值,distinct,去除重复值并且可以正常显示其他字段》吗
暂无评论
2023-11-13
2023-11-12
2023-11-02
2023-12-12
2023-12-11