On Sun, Apr 18, 2004 at 20:24:47 +0100,
Paul Thomas <paul(at)tmsl(dot)demon(dot)co(dot)uk> wrote:
>
> PostgreSQL can be coerced into accepting where foo = null with the
> transform_null_equals run-time option but that doesn't make it legal SQL
> IFAIK.
foo = NULL is a valid SQL expression that always returns NULL.