Re: When is a record NULL? - Mailing list pgsql-hackers

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