In HEAD psql, \df doesn't show functions that have no arguments:
test=> CREATE FUNCTION foo() RETURNS integer AS 'SELECT 1' LANGUAGE sql; CREATE FUNCTION test=> \df foo
List of functions Schema | Name | Result data type | Argument data types
--------+------+------------------+---------------------(0 rows)
The problem appears to be that proargtypes[0] is now NULL instead
of 0. Here's a simplified version of the \df query:
SELECT proname FROM pg_catalog.pg_proc p WHERE p.proargtypes[0] <> 'pg_catalog.cstring'::pg_catalog.regtype AND
p.proname~ '^foo$'; proname --------- (0 rows) SELECT proargtypes[0], proargtypes[0] IS NULL FROM pg_proc WHERE
proname= 'foo'; proargtypes | ?column? -------------+---------- | t (1 row)
Here's the latter query in 8.0.2beta1:
proargtypes | ?column? -------------+---------- 0 | f (1 row)
I'm not sure when this broke -- perhaps with the recent oidvector
changes?
http://archives.postgresql.org/pgsql-committers/2005-03/msg00423.php
--
Michael Fuhr
http://www.fuhr.org/~mfuhr/
