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Case statement in SSIS expression lingo

Posted on 2011-03-01
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Last Modified: 2012-05-11
What’s the expression language within a derived column transform to do CASE type stuff…

Basically, I’m adding a column that is a retainer percent that adjusts client spend based on date so if

Tape_aired < 1/31/11 then RetainerPerc                                                               =  .97 for that row
Tape_aired between 1/31/11 and 2/15/11 then RetainerPerc                      = .984 for that row
Tape_aired between 2/15/11 and 3/30/11 then RetainerPerc                      = .992 for that row


THanks all as this site has been amazing for me...
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Question by:Gray5452
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Expert Comment

by:itcouple
ID: 35007623
Hi

This should help
http://www.itcouple.com/ssis-if.aspx

You can nest them using brackets... Let me know if you need an example (I actually need to post an example the above page with nesting).

Hope that helps
Emil
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Author Comment

by:Gray5452
ID: 35007785
thanks, that is much appreciated Emil,,,would the brackets just go back to back?
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Expert Comment

by:itcouple
ID: 35007904
I'm not sure if typed it correctly but below should give you the answer:

(Field==2?1:(Field==3?1:2))

Regards
Emil
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itcouple earned 2000 total points
ID: 35008588
Hi

I updated my link (will publish tonight) and below is an example for you

(DateField < "2011-01-01" ? 0.5 : (DateField >= "2011-01-01" && DateField <= "2011-02-28" ? 0.75 : 1))

I haven't tested in with actual table so you might have to do some cast to date. Also third condition I put as else instead of your final range so you might want to change that.

Regards
Emil
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