ORACLE 去除多餘的重複記錄語句

一，去除多餘的重複記錄，如下以判斷a字段，若是字段相同則記錄相同 一、使用 rowid的方式 ①正常版web delete from stu where a in (select a from stu group by a having count(a)>1) and rowid not in (select min(rowid) from people group by a having cou

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