删除重复数据,虽然知道这两条语句很久了,还是记录一下吧
DELETE FROM EMP1 E WHERE E.ROWID > (SELECT MIN(X.ROWID) FROM EMP1 X WHERE X.EMPNO = E.EMPNO);
DELETE FROM TEST1 A WHERE EXISTS (SELECT 1 FROM TEST1 B WHERE A.EMPNO=B.EMPNO AND A.ROWID>B.ROWID);
删除重复数据
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转载自blog.csdn.net/tianmingt/article/details/81774658
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