Richard,
Seems to work here: select (true or null) as a, (null or true) as b, (null or false) as c, (false or null) as d; a | b | c | d ---+---+---+--- t | t | | (1 row)
I'm sorry for the wrong information. Andrus. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general