I'm converting a SQL application to PostgreSQL. The majority of the logic in this application is in the stored functions in the database.
Somewhere, I saw a reference to "WITH (iscachable)" for stored functions, looking again, I'm unable to find any reference to this directive. I have a single function that is _obviously_ safe to cache using this, and it generates no errors or problems that I can see.
Now I'm looking at a lot of other functions that, if cached, would speed up performance considerably. Yet I'm reluctant to use this directive since I can't find documentation on it anywhere.
Can anyone say whether this is a supported feature in plpgsql, and is safe to use? Is it simply undocumented, or am I just looking in the wrong place?
(to reduce ambiguity, the manner in which I'm using this is:
CREATE FUNCTION getconstant(VARCHAR)
RETURNS int
AS '
DECLARE
BEGIN
IF $1 = ''phrase'' THEN
RETURN 1;
END IF;...
END; ' LANGUAGE 'plpgsql' WITH (iscacheable);
-- Bill Moran Potential Technologies http://www.potentialtech.com
---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives?
http://archives.postgresql.org
