Re: Function xxxx() does no exist

Philippe =?iso-8859-1?Q?Lef=E8vre?= <ph(dot)l(at)libertysurf(dot)fr> writes:
> So I created:
> CREATE FUNCTION chk_itheme_proc(int4) RETURNS int4
> AS 'SELECT COUNT(i_theme) FROM tbl_theme
> WHERE i_theme = $1;'
> LANGUAGE 'sql';

> and I created a trigger:
> CREATE TRIGGER chk_itheme_trig BEFORE INSERT OR UPDATE ON tbl_article
> FOR EACH ROW EXECUTE PROCEDURE chk_itheme_proc ('theme');

> but I get the message:
> ERROR: CreateTrigger: function chk_itheme_proc() does not exist

Poorly worded error message, I'd say. You have a function
chk_itheme_proc(int4), but the trigger as you show it requires a
function with a signature of chk_itheme_proc(text) or something close
to it. Those are different functions.

The error message ought to print out the expected parameter types to
remind you about that...

regards, tom lane