oracle查詢重複數據方法

 SQL重複記錄查詢ide 一、查找表中多餘的重複記錄，重複記錄是根據單個字段（peopleId）來判斷 select * from people where peopleId in (select   peopleId from   people group by   peopleId having countfetch (peopleId) > 1)設計 二、刪除表中多餘的重複記錄，重複記

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