comparing two lists

From: rbutch_at_coair.com ((rbutch_at_coair.com))
Date: 12/29/04 

Date: Wed, 29 Dec 2004 06:14:32 -0800

hey guys, i need some help on an approach.
i need to compare, two different lists.
one will be pulled from a dataset and could have as much as 2500 varchar employee numbers in it.
the other will have the same data, but might be missing some of those same numbers.
what's the best way to compare the two lists, or group or array and find who's missing from the second list?
thanks
rik

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