我們一般情況下通過分組函數group by來查詢重復的列
SELECT * FROM (SELECT [column1],[column2] FROM [dbo].[Table] where 1=1) R group by [column1],[column2] having count(*) > 1
但是查詢出的結果不能顯示該表的其他列
想要查詢一張表中有多個列重復的數據且也要顯示該表的其他列
SELECT M.* FROM [dbo].[Table] M, (SELECT * FROM (SELECT [column1],[column2] FROM [dbo].[Table] where 1=1) R group by [column1],[column2] having count(*) > 1) M1 where M.[column1]=M1.[column1] AND M.[column2]=M1.[column2]