select * from tablename where 重複欄位1 in (select 重複欄位1 from tablename group by 重複欄位1,重複欄位2 having count(*)>1)。

SQL重複記錄查詢方法：

1、查詢表中多餘的重複記錄，重複記錄是根據單個欄位（peopleId）來判斷

select * from people where peopleId in (select   peopleId from   people group by   peopleId having count (peopleId) > 1)

2、刪除表中多餘的重複記錄，重複記錄是根據單個欄位（peopleId）來判斷，只留有rowid最小的記錄

delete from people where peopleId in (select   peopleId from people group by   peopleId   having count (peopleId) > 1)and rowid not in (select min(rowid) from   people group by peopleId having count(peopleId )>1)

3、查詢表中多餘的重複記錄（多個欄位） 

select * from vitae awhere (a.peopleId,a.seq) in   (select peopleId,seq from vitae group by peopleId,seq having