如果所有重复的内容都删掉可以试试 delete from t where id not in ( select id from t group by c1, c2, c3, c4 having count (*) < 2)
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时间:2020-05-02 02:49:35
如果所有重复的内容都删掉可以试试 delete from t where id not in ( select id from t group by c1, c2, c3, c4 having count (*) < 2)
mysql未响应怎么解决 – 数据库 – 前端 mysql 删除表sql语句
2018-12-24