oracle常用sql集锦

发布时间：2021-01-24 06:25 所属栏目：[站长百科] 来源：网络整理

导读：1、删除表中重复的数据只留下一条: DELETE from 表 WHERE (id) IN ( SELECT id FROM 表 GROUP BY id HAVING COUNT(id) 1) AND ROWID NOT IN (SELECT MIN(ROWID) FROM 表 GROUP BY id HAVING COUNT(*) 1);

1、删除表中重复的数据只留下一条:

DELETE from 表 WHERE (id) IN ( SELECT id FROM 表 GROUP BY id HAVING COUNT(id) > 1) AND ROWID NOT IN (SELECT MIN(ROWID) FROM 表 GROUP BY id HAVING COUNT(*) > 1);

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