刪除數據庫中表的某些相同的某些記錄 OR 查找數據庫的表中的相同記錄

 

一、刪除數據庫中表的某些相同的某些記錄

delete from tablename where only_Id not in(select min(only_id) from tablename group by sameName)

二、選出相同記錄的SQL語句 AND 刪除相同記錄的SQL語句刪除相同記錄的SQL語句

//IF 表中無主鍵，ID中無（IDENTITY(1,1)）,ID相同的記錄刪除？

a、select * from tableName where id in(select id from tableName group by id having count(*) >1)

 b、delete from tableName where id in(select id from talbeName group by id having count(*) >1)