Question

我试图在同一个表中的3列中找到重复数据。我正在寻找具有相同ReferenceNumber，PremiseId＆amp; amp; DatePlaced。

例如，出现了具有DatePlaced 02/08/17的PremiseId 67890的ReferenceNumber为12345的订单，因为满足所有三个条件。

这是我到目前为止所做的，这是从本网站的另一个答案中获取的。

SELECT ReferenceNumber, PremiseId, DatePlaced
FROM [ypolive_Integration].[dbo].[OrderHeaders]
WHERE ReferenceNumber in
(SELECT ReferenceNumber FROM [ypolive_Integration].[dbo].[OrderHeaders]
GROUP BY ReferenceNumber
HAVING COUNT(*)>1)

Order By DatePlaced desc

这是ReferenceNumber，PremiseId＆amp;的返回结果。 DatePlaced。然而，这显示了所有数据，我只希望它显示符合所有三个标准的重复项。

我非常喜欢这种事情，如果这是完全错误的话，请道歉！

现在用以下代码解决这个问题：

select ReferenceNumber, PremiseId , CONVERT(VARCHAR(10),DatePlaced, 112) as 
DatePlaced,count(1) as cnt 
from [ypolive_Integration].[dbo].[OrderHeaders]
group by ReferenceNumber, PremiseId , CONVERT(VARCHAR(10),DatePlaced, 112)
having count(1) > 1 
order by DatePlaced desc

Answer 1

您可以查询如下：

Select * from (
    SELECT --ReferenceNumber, PremiseId, DatePlaced, 
            *
           ,RowN = Row_Number() over (partition by ReferenceNumber, PremiseId order by DatePlaced desc)
    FROM [ypolive_Integration].[dbo].[OrderHeaders]
) a
Where a.RowN > 1

Answer 2

请尝试以下查询

 select ReferenceNumber, PremiseId , CONVERT(VARCHAR(10),DatePlaced, 112) as 
 DatePlaced,count(1) as cnt 
 from [ypolive_Integration].[dbo].[OrderHeaders]
 group by ReferenceNumber, PremiseId , CONVERT(VARCHAR(10),DatePlaced, 112)
 having count(1) > 1

Answer 3

SELECT ReferenceNumber
    ,PremiseId
    ,DatePlaced
    ,convert(VARCHAR(100), ReferenceNumber) + ' - ' + convert(VARCHAR(100), PremiseId) + ' - ' + convert(VARCHAR(100), DatePlaced, 121) combined  --Remove this line if not needed
FROM [ypolive_Integration].[dbo].[OrderHeaders]
WHERE convert(VARCHAR(100), ReferenceNumber) + ' - ' + convert(VARCHAR(100), PremiseId) + ' - ' + convert(VARCHAR(100), DatePlaced, 121) IN (
        SELECT convert(VARCHAR(100), ReferenceNumber) + ' - ' + convert(VARCHAR(100), PremiseId) + ' - ' + convert(VARCHAR(100), DatePlaced, 121) combined
        GROUP BY convert(VARCHAR(100), ReferenceNumber) + ' - ' + convert(VARCHAR(100), PremiseId) + ' - ' + convert(VARCHAR(100), DatePlaced, 121)
        HAVING COUNT(*) > 1
        )
ORDER BY DatePlaced DESC

Answer 4

尝试使用此查询：

SELECT ReferenceNumber, PremiseId, DatePlaced
FROM [ypolive_Integration].[dbo].[OrderHeaders]
WHERE ReferenceNumber in
(SELECT ReferenceNumber FROM [ypolive_Integration].[dbo].[OrderHeaders]
GROUP BY ReferenceNumber HAVING COUNT(*)>1) 
AND PremiseId in (SELECT PremiseId FROM [ypolive_Integration].[dbo].[OrderHeaders] GROUP BY PremiseId HAVING COUNT(*)>1) 
AND DatePlaced in (SELECT DatePlaced FROM [ypolive_Integration].[dbo].[OrderHeaders] GROUP BY DatePlaced HAVING COUNT(*)>1)

如何在表中查找重复数据

4 个答案: