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How can I get this query to return the results I need?

Posted on 2013-06-03
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Last Modified: 2013-06-20
I need to be able to determine a current Customer who has placed an order within the past year.  
The current customer is determined by a customer placing an order within the past 5 years as in the Current query below.  

Current:
Select Cust_IdA, Order_date
From TableA
Where Order_date >= DATEADD(Year,-5, GETDATE())

which returns:

Cust_IdA             Order_date
0x00001              2008-10-20
0x00002              2009-05-06
0x00003              2010-02-04
0x00004              2011-07-19
0x00005              2013-01-30


Desired:
That a Cust_IdA list is created based on Order_dates within the 1 year of getdate(), which would be from 2012-06-3 to 2013-06-3, and that the Cust_IdA is in the Current Cust_IdA list which is 540 IDs.

Close to an example:

Cust_IdA             Order_date
0x00001              2012-10-20
0x00002              2013-05-06
0x00003              2013-02-04
0x00004              2012-07-19
0x00005              2013-01-30

The Cust_IdA list above  is based on
Order_date >= DATEADD(Year,-1, GETDATE())

Would something like this work?

Select Cust_IdA
From TableA
Where Order_date >= DATEADD(Year,-5,CONVERT (date, GETDATE()))
AND Order_Date >= DATEADD(Year,-1,CONVERT (date, GETDATE()))
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Comment
Question by:rhservan
  • 2
3 Comments
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 39217670
Which is exactly the same as this:
SELECT  Cust_IdA
FROM    TableA
WHERE   Order_Date >= DATEADD(Year, -1, CONVERT (date, GETDATE()))

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Author Comment

by:rhservan
ID: 39217692
Would there be any problem in using a 540 id's for my list in an IN .
Is there any best practices for this?
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LVL 75

Accepted Solution

by:
Anthony Perkins earned 500 total points
ID: 39217759
Your best bet is to place those 540 IDs in a well-indexed permanent or temporary table and then do a JOIN against that table.
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