sql如何查询重复数据(GROUP BY having使用实例)

SELECT * FROM Tkx_Invoice WHERE in_invoiceTitle IN (SELECT in_invoiceTitle FROM [dbo].[Tkx_Invoice] GROUP BY in_invoiceTitle HAVING COUNT(in_invoiceTitle)>1);
SELECT COUNT(in_invoiceTitle) AS tcount,in_invoiceTitle FROM Tkx_Invoice GROUP BY in_invoiceTitle HAVING COUNT(*)>1 ORDER BY tcount DESC;