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:2019-03-25 02:34:09
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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