=?UTF-8?Q?Grzegorz_Ja=C5=9Bkiewicz?= <gryzman(at)gmail(dot)com> writes:
> the foo bar example above, with notion that all columns are NOT NULL
> behaves much different now.
AFAIK the treatment of NOT IN subselects hasn't changed a bit since 8.3.
So I still find your complaint uninformative.
regards, tom lane