Strange, this works: select * from users where last_visit > now() + 7; -- last_visit is nullable, of type timestamp But this doesn't select * from users where last_visit + 7 > now(); ERROR: Unable to convert null timestamp to date -- yes, there are users where last_visit IS NULL BTW, this works too: select null+1; -- obviously returns NULL System is FreeBSD 4.1, PgSQL 7.0.2 Anyone got a clue? Yours sincerely, Edmar Wiggers BRASMAP Information Systems +55 48 9960 2752
