In article <200204151933.g3FJXT912721@candle.pha.pa.us>,
Bruce Momjian <pgman@candle.pha.pa.us> wrote:
>Oh, I didn't realize the size of the NULL bitmask was zero if no nulls
>exist. Nice.
So, how does the row know if the NULL bitmask exists or not? I'm guessing
there's a structure per row somewhere that has as at least one of it's
members, a bit on whether a NULL bitmask exists or not?
If all of the members of a row become non-NULL, does the NULL bitmask go
away?
mrc
--
Mike Castle dalgoda@ix.netcom.com www.netcom.com/~dalgoda/
We are all of us living in the shadow of Manhattan. -- Watchmen
fatal ("You are in a maze of twisty compiler features, all different"); -- gcc