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SQL Server 2005: Case Logic in Dynamic SQL

Posted on 2010-09-15
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Last Modified: 2012-05-10
Hi Techies--

I am getting the error:

Incorrect syntax near the keyword 'as'.

...because I am trying to dub a column name within case/end logic.  Does anyone have a suggestion on how to solve this issue?

[begin snippet]

SET @Sql = N'
SELECT
 pat.AssemblyNum as ''assemblyNumber'',
 pat.PatternNum as ''patternNumber'',
 pat.Corner as ''cornerNumber'',
 class.PatClassTypeName as ''className'',
 case
  when pat.MatchTypeID = ''101'' then pat.Width/2 as ''repeatWidth''
  else pat.Width as ''repeatWidth''
 end ,
 pat.Length as ''repeatLength'',
 match.MatchTypeName as ''matchType'',
 pat.CollectionID as ''collectionID'',
 coll.CollectionName as ''collectionName''
FROM PatternClassType class, Collections coll, Patterns pat
    LEFT OUTER JOIN MatchType match
       ON pat.matchtypeid = match.matchtypeid

[end snippet]

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Question by:ditallop
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2 Comments
 
LVL 39

Accepted Solution

by:
BrandonGalderisi earned 500 total points
ID: 33688335
Your "AS" has to be on the entire case statemented column, not on each possible value.  So the correct syntax would be...


SET @Sql = N'
SELECT
 pat.AssemblyNum as ''assemblyNumber'',
 pat.PatternNum as ''patternNumber'',
 pat.Corner as ''cornerNumber'',
 class.PatClassTypeName as ''className'',
 case
  when pat.MatchTypeID = ''101'' then pat.Width/2
  else pat.Width
 end as ''repeatWidth'',
 pat.Length as ''repeatLength'',
 match.MatchTypeName as ''matchType'',
 pat.CollectionID as ''collectionID'',
 coll.CollectionName as ''collectionName''
FROM PatternClassType class, Collections coll, Patterns pat
    LEFT OUTER JOIN MatchType match
       ON pat.matchtypeid = match.matchtypeid

0
 

Author Comment

by:ditallop
ID: 33688389
brilliantly done!:-)
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