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Why do I see a SELECt within a Inner Join clauses

Posted on 2014-02-01
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Last Modified: 2014-02-01
I was reviewing someone's SQL code within MS Excel that really has me puzzled.  

It shows:
INNER JOIN(SELECT CUSTOMER.AC,",CUSTOMER.[OrderDate]
FROM CUSTOMER
WHERE[Status]='Current' AS CLIENT
ON....

Can someone help me with whats going on relative to these lines ?  Why is SELCT not its own line ?
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Question by:upobDaPlaya
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5 Comments
 
LVL 17

Expert Comment

by:dbaSQL
ID: 39826953
Looks to me like you're just missing the top part of the query.  See this example, with a top query INNER JOINed to a subquery.


SELECT p.Name, s.OrderQty
FROM Production.Product p INNER JOIN (      SELECT ProductID, OrderQty
                                                                       FROM Sales.SalesOrderDetail) s
                                                                        ON p.ProductID = s.ProductID
0
 

Author Comment

by:upobDaPlaya
ID: 39826983
Got it..In your example is Production the name of the database and product the name of the table
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LVL 17

Accepted Solution

by:
dbaSQL earned 500 total points
ID: 39826988
In my example, Production is the schema name, and Product is the table name.  Same with Sales.SalesOrderDetail.  Sales is the schema name, SalesOrderDetail is the table.

These objects exist in AdventureWorks2012.
0
 

Author Closing Comment

by:upobDaPlaya
ID: 39827063
Awesome..thanks for the reference also relative to the Objects !
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LVL 17

Expert Comment

by:dbaSQL
ID: 39827113
My pleasure.
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