On Fri, 2009-07-24 at 15:47 -0700, David E. Wheeler wrote:
> WHILE (NOT rec_have IS NULL AND rec_have IS DISTINCT FROM NULL)
> OR (NOT rec_want IS NULL AND rec_want IS DISTINCT FROM NULL)
>
I don't think you want the "NOT x IS NULL" part at all -- that will
evaluate to false when x = rec(NULL,NULL). I think you just want the "x
IS DISTINCT FROM NULL" part, right? Will that work?
Regards,
Jeff Davis
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