ORACLE中數據查重及重複數據刪除

1.單個字段 1.1 查找表中多餘的重複記錄，重複記錄是根據單個字段（Id）來判斷 select * from 表 where Id in (select Id from 表 group by Id having count(Id) > 1)   1.2 刪除表中多餘的重複記錄，重複記錄是根據單個字段（Id）來判斷，只留有rowid最小的記錄 DELETE from 表 WHERE (id) IN

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