In an attempt to throw the authorities off his trail, bbn-pgsql.general@clansoft.dk (Baldur Norddahl) transmitted:
> How come "X=null" is not the same as "X is null"?
Because NULL is not really a "value" in SQL. Nothing can ever be
equal to a NULL, and that includes another NULL.
In Some Pseudo-SQL Database Systems, NULL is treated as a sort of
"zero" value, which is contrary to the SQL standards.
I seem to recall that in Microsoft's port of Sybase SQL Server,
there's some syntactic sugar that "x = NULL" is treated as if it were
querying "x is NULL."
It would presumably be _possible_ to modify PostgreSQL's query parser
to handle "x = NULL" similarly; feel free to submit a patch to that
end, if you consider it a vital change to make.
--
output = reverse("ac.notelrac.teneerf" "@" "454aa")
http://www.ntlug.org/~cbbrowne/oses.html
Rules of the Evil Overlord #212. "I will not send out battalions
composed wholly of robots or skeletons against heroes who have qualms
about killing living beings. <http://www.eviloverlord.com/>
