DELETE from 表名 WHERE (id) IN ( SELECT id FROM 表名 GROUP BY id HAVING COUNT(id) > 1) AND ROWID NOT IN (SELECT MIN(ROWID) FROM 表名 GROUP BY id HAVING COUNT(*) > 1);
Oracle 删除重复数据且保留一条数据
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转载自my.oschina.net/u/659587/blog/1575559
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