mysql 数据表中查找重复记录
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2023-12-11 23:56:28
复制代码 代码如下:select user_name,count(*) as count from user_table group by user_name having...
复制代码 代码如下:
select user_name,count(*) as count from user_table group by user_name having count>1;
这个我在很早有发过一个asp下的access 的