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Convert this query int LINQ..possible??

Posted on 2013-11-20
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Last Modified: 2016-02-10
Hello, I would like, if possible, to convert this SQL query into LINQ. Basically is a group query that joins to itself.

select t1.invoiceno  from testdups as t1
left join testdups as t2 on t1.InvoiceNo = t2.invoiceno
where t1.IsInvoice <> t2.IsInvoice
group by t1.invoiceno
having count(t1.invoiceno)> 1

thanks!
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Question by:arcross
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Fernando Soto earned 2000 total points
ID: 39662714
Hi arcross;

Give this a try to see if it comes out with what you are looking for.

Dim result = From t1 in DataContextInstance.testdups _
             Join t2 in DataContextInstance.testdups On t1.InvoiceNo = t2.InvoiceNo _
             Where t1.IsInvoice <> t2.IsInvoice _
             Group t1 By Key = t1.InvoiceNo Into Group _
             Where Group.Count > 1 _
             Select Group.Key

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