Как найти дубликат записи SQL

Question

Query

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() 

и дублированию записей в Av.ItemID

Answer 1

Это будет выглядеть так:

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