[GENERAL] update in triggers

[Jamie Deppeler]

Hi,
Think im doing something wrong here, cant seem to resolve the problem i 
have a trigger which is calling a update function and when it gets to a 
update it goes into a infinite loop

code
Trigger
CREATE TRIGGER "new_trigger" AFTER INSERT OR UPDATE
ON "chargeratetest" FOR EACH ROW
EXECUTE PROCEDURE "chargeratetest"();
function
CREATE OR REPLACE FUNCTION "chargeratetest" () RETURNS trigger AS'
begin
 UPDATE chargeratetest
 set notes=''hello''
 where new."primary" = chargeratetest."primary";
 return null;
end;
'LANGUAGE 'plpgsql' IMMUTABLE CALLED ON NULL INPUT SECURITY INVOKER;
would be greatful for any help thx
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