ORACLE 數據庫

刪除重複記錄 delete from acc a1 where rowid != (select max(rowid) from acc a2 where a1.name = a2.name and a1.age = a2.age) 分頁 select a2.* from (select a1.*, rownum rn from acc a1) a2 where a2.rn > 1 and row

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