After I posted my initial message I thought about the same approach you are suggesting. And actually it should work even better as the tables do have indexes on both fields. I just keep forgetting that the JOIN does not have to be only ON one field but can have the AND clause.
Thank you very much for your help.
>It depends on what indexes you have. If you have indexes on each int field than
>
>select * from mytable1 join mytable2 ;
> on mytable1.intfld1 = mytable2.intfld1 and mytable1.intfld2 = mytable2.intfld2
>
>
>It's also standard SQL that will run on most other backends w/o modifications.
>
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