Question

MS SQL n00b question on nested SELECT statement

Asked by: yaronusa

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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Asked On
2009-04-14 at 13:04:58ID24321969
Tags

ms sql nested select

Topics

MS SQL Server

,

SQL Query Syntax

,

SQL Server 2005

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: angelIIIPosted on 2009-04-14 at 13:09:45ID: 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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by: yaronusaPosted on 2009-04-14 at 13:19:53ID: 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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by: yaronusaPosted on 2009-04-14 at 13:20:39ID: 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.

20120131-EE-VQP-002

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