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Removing columns after Merge Join ?

Posted By:      Posted Date: October 07, 2010    Points: 0   Category :Sql Server


I have the scenario (using a third party component) where certain columns must not be present as input.

I am doing a Full Outer - Merge Join.

This results in:



but now in some cases the LeftPK may be  null in other cases the RightPK may be null,

so i'm creating a derived column to check:

ISNULL(LeftPK) ? RightPK : LeftPK

and call this the TruePK

this all works however now i'm left with 3 columns

LeftPK; RightPK; TruePK

Is there some kind of transform (other than script task) that i can use to get rid of Left and Right PK columns before sending input to next third party component?

I.W Coetzer

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