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help with CASE

 
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koolspark
Beginner


Joined: 27 May 2010
Posts: 29
Topics: 13
PostPosted: Tue Nov 02, 2010 12:43 pm    Post subject: help with CASE Reply with quote
I've the following conde in my WHERE clause of a SELECT statement.
Code:

SELECT * FROM TAB1
WHERE TYP_C IN (
     CASE WHEN STAT_C = 'R' THEN
                        'R'
          ELSE      'P' || ',' || 'E' ||','||'C'

TYP_C & STAT_C are the columns in TAB1.

the ELSE part doen't show any syntax errors, but I'm not getting the data selected even the STAT_C value is 'P' or 'E' or 'C'.
how can I check for multiple values in ELSE part.
Please advise.
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NASCAR9
Intermediate


Joined: 08 Oct 2004
Posts: 274
Topics: 52
Location: California
PostPosted: Tue Nov 02, 2010 12:48 pm    Post subject: Reply with quote
The reason is the ELSE means just that anything ELSE.

You need a Where Block for only the values you need.
_________________
Thanks,
NASCAR9
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kolusu
Site Admin
Site Admin


Joined: 26 Nov 2002
Posts: 12369
Topics: 75
Location: San Jose
PostPosted: Tue Nov 02, 2010 1:01 pm    Post subject: Reply with quote
koolspark,

Isn't it simple without the case statement?

Code:

SELECT *                       
  FROM KTAB1               
  WHERE TYP_C IN ('P','E','C') 
     OR STAT_C = 'R'     
  ;


Kolusu
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jsharon1248
Intermediate


Joined: 08 Aug 2007
Posts: 291
Topics: 2
Location: Chicago
PostPosted: Wed Nov 03, 2010 8:11 am    Post subject: Reply with quote
kolusu and NASCAR set you on the right course. The CASE is adding confusion. Code the predicates with simple ANDs and ORs and use parenthesis to make sure you're getting what you want.

If you're still having trouble, post the requirements.
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