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T-SQL Using IN with a subquery

Posted on 2016-11-23
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Last Modified: 2016-11-23
Using IN with a subquery
https://msdn.microsoft.com/en-us/library/ms177682.aspx

I'm using the IN from the above link

I'm using sql server Northwind database

When I run this query

-- Determines whether a specified value matches any value in a subquery or a list.
SELECT * FROM [Northwind].[dbo].[Orders]
WHERE [CustomerID] IN(
                      SELECT * FROM [Northwind].[dbo].[Customers]                            
                     )


I get this error

"Only one expression can be specified in the select list when the subquery is not introduced with EXISTS."

Any idea of why i'm getting this error
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Question by:maqskywalker
3 Comments
 
LVL 34

Accepted Solution

by:
Brian Crowe earned 1000 total points
ID: 41899553
You need to specify what column you are looking for CustomerID in instead of using SELECT *
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LVL 13

Assisted Solution

by:Jeff Darling
Jeff Darling earned 1000 total points
ID: 41899649
like this

SELECT * FROM [Northwind].[dbo].[Orders]
WHERE [CustomerID] IN(
                      SELECT CustomerID FROM [Northwind].[dbo].[Customers]                             
                     )

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LVL 1

Author Closing Comment

by:maqskywalker
ID: 41899680
thanks
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