[no subject]

  IMMUTABLE indicates that the function always returns the same result
  when given the same argument values; that is, it does not do database
  lookups or otherwise use information not directly present in its
  argument list. If this option is given, any call of the function
  with all-constant arguments can be immediately replaced with the
  function value.

The function definition:


  CREATE OR REPLACE FUNCTION testme(integer) RETURNS text AS
  ' BEGIN
          RAISE NOTICE ''called'';
          return ''ret''::text;
  END ' LANGUAGE 'plpgsql' IMMUTABLE STRICT;


PostgreSQL version 8.0.0



--strk;