It's in a postgreSQL DB actually. I'm less familiar with SQL, so the SELECT DISTINCT's don't scare me, but I get a little spooked at GROUP BY's and I fear doing some kind of JOIN on this table and itself.

If I can come to grips with the concept I want to accomplish - and Perl is the mechanism I'm hoping I can do this with the easiest - I ought to be able to work out the SQL solution, and then you're right, the DB engine probably would be best.

In reply to Re^2: Contemplating some set comparison tasks by dwhite20899
in thread Contemplating some set comparison tasks by dwhite20899

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