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MS SQL n00b question on nested SELECT statement

Posted on 2009-04-14
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Last Modified: 2012-05-06
In the code section below you will find an SQL statement that works, but I want apply one extra "filter" to its result, perhaps by another SELECT statement?

When executing this query, I will get my results, but I want to filter those results out further by only getting records which match a particular test_name.

For example, test_name='aaa' .... how should I modify the query below? Thanks...
SELECT unique_id, test_name, test_object FROM tblSerializedTests
  WHERE unique_id IN 
   (SELECT unique_id FROM tblUserControls
    WHERE multiplicity='single'
      AND instrument='HP3245A'
      AND test_type='ACISource')

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Question by:yaronusa
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3 Comments
 
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Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 24142020
this could do:
SELECT unique_id, test_name, test_object FROM tblSerializedTests
  WHERE unique_id IN 
   (SELECT unique_id FROM tblUserControls
    WHERE multiplicity='single'
      AND instrument='HP3245A'
      AND test_type='ACISource')
  AND test_name = 'aaa'

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Author Comment

by:yaronusa
ID: 24142115
For a n00b, I was pretty close, but I put the 'And test_name = aaa' in the WRONG place.

Thanks for helping me... it is very appreciated.

SELECT unique_id, test_name, test_object FROM tblSerializedTests
  WHERE unique_id IN /*AND test_name = 'aaa' <--I'm wrong */
   (SELECT unique_id FROM tblUserControls
    WHERE multiplicity='single'
      AND instrument='HP3245A'
      AND test_type='ACISource')
  AND test_name = 'aaa' /* <--you're right */

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0
 

Author Closing Comment

by:yaronusa
ID: 31570127
For a n00b, I was pretty close, but I put the 'And test_name = aaa' in the WRONG place.

Thanks for helping me... it is very appreciated.
0

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