SELECT username, COUNT(*) AS COUNT FROM honghai_user GROUP BY username HAVING COUNT>1; 本文为“技术点滴”的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
mysql中查询重复的记录
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SELECT username, COUNT(*) AS COUNT FROM honghai_user GROUP BY username HAVING COUNT>1;