如何查找重复记录sql答案

【问题标题】：How to find duplicate record sql如何查找重复记录sql
【发布时间】：2015-02-14 06:31:47
【问题描述】：

查询

SELECT AV.ItemID as ItemIDe, AV.uid,  ui.Count, U.Name, u.Surname,
u.UID as UserID, av.Value, av1.Value, AV2.Value  
FROM AttribValues as AV  
full join AttribValues as AV2 on AV2.AttribID = 3 AND AV2.Value = '12' 
                                 AND AV2.ItemID = AV.ItemID 
full join AttribValues as AV1 on AV1.AttribID = 2 AND AV1.Value = 'zielony' 
                                 AND AV1.ItemID = AV.ItemID 
join UsersItems as UI on Ui.UID = AV.ItemID
join Users as U on u.UID = ui.UserID  
WHERE ((AV.AttribID = 1 AND AV.Value = '517750069') OR (AV1.Value IS NOT NULL 
OR AV2.Value IS NOT NULL))  AND DateEnd > GETDATE ()

并且在 Av.ItemID 中有重复记录

【问题讨论】：

你能提供样本数据和期望的结果吗？另外，我想这是给SQL Server。

标签： sql join duplicates

【解决方案1】：

会是这样的：

SELECT COUNT(1), AV.ItemID as ItemIDe, AV.uid,  ui.Count, U.Name, u.Surname, u.UID as UserID, av.Value, av1.Value, AV2.Value  

FROM AttribValues as AV  
full join AttribValues as AV2 on AV2.AttribID = 3 AND AV2.Value = '12' AND AV2.ItemID = AV.ItemID 
full join AttribValues as AV1 on AV1.AttribID = 2 AND AV1.Value = 'zielony' AND AV1.ItemID = AV.ItemID 

join UsersItems as UI on Ui.UID = AV.ItemID
join Users as U on u.UID = ui.UserID  

WHERE ((AV.AttribID = 1 AND AV.Value = '517750069') OR (AV1.Value IS NOT NULL OR AV2.Value IS NOT NULL))  AND DateEnd > GETDATE ()

GROUP BY AV.ItemID, AV.uid,  ui.Count, U.Name, u.Surname, u.UID, av.Value, av1.Value, AV2.Value

HAVING COUNT(1) > 1

【讨论】：