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  #1 (permalink)  
Old 05-31-06, 18:54
jdrcsdrc jdrcsdrc is offline
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Join Date: May 2006
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Greater and Least Function equivalent in DB2

I want to convert the following Oracle SQL into DB2 SQL I am having issues dealing with the Grater and Least Functions:

Code:
CASE WHEN integrated  = 0 THEN 
       CASE WHEN centered = 0 THEN
             GREATEST(tl.timelabel - (1/24),STARTTIME)
            WHEN centered <> 0 THEN
              GREATEST(tl.timelabel - (1/24),mwseg.starttime + 0.5 * (mwseg.stopTime-(mwseg.rampdown/(24*60)) - STARTTIME ) )
       END
 END StartHour
Any help appreciated, I already did a quick search with no luck, sorry if it is a repeat post.

Thanx in advance.
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Old 06-01-06, 02:43
Wim Wim is offline
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Join Date: Nov 2004
Posts: 1,279
I had the same problem, perhaps there is a better solution, but I used an extra CASE statement
Code:
CASE WHEN integrated  = 0 THEN 
       CASE WHEN centered = 0 THEN
             CASE WHEN tl.timelabel - (1/24) > STARTTIME
                    THEN tl.timelabel - (1/24)
                    ELSE STARTTIME
             END
            WHEN centered <> 0 THEN
              ....
       END
 END StartHour
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With kind regards . . . . . SQL Server 2000/2005/2008/2008 R2 Earned beers: 16
Wim
Beware of bugs in the above code; I have only proved it correct, not tried it. -- Donald Knuth
Grabel's Law: 2 is not equal to 3 -- not even for very large values of 2.
Pat Phelan's Law: 2 very definitely CAN equal 3 -- in at least two programming languages
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