Sorry, found my answer wrt "dynamic queries", etc. Restructured trigger to look like this:
CREATE OR REPLACE FUNCTION pdf_active_check() RETURNS trigger AS $BODY$
DECLARE
var_curs1 refcursor;
var_active BOOLEAN;
BEGIN
open var_curs1 FOR EXECUTE 'SELECT p.active FROM '||TG_TABLE_NAME||' pv INNER JOIN pdfs p ON
p.id = pv.pdf_id WHERE p.active = true';
FETCH var_curs1 INTO var_active;
IF FOUND THEN
RETURN NEW;
ELSE
RETURN NULL;
END IF;
END;
$BODY$ LANGUAGE 'plpgsql';
Sorry for the noise.
Stephen Cuppett
steve at cuppett dot com
On Sun, Aug 30, 2009 at 8:11 AM, Stephen Cuppett
<steve@cuppett.com> wrote:
Using PostgreSQL 8.4.0, I have the following generic trigger defined for use by a collection of the same structured tables:
CREATE OR REPLACE FUNCTION pdf_active_check() RETURNS trigger AS $BODY$
DECLARE
var_active BOOLEAN;
BEGIN
SELECT p.active INTO STRICT var_active FROM TG_TABLE_NAME pv INNER JOIN pdfs p ON p.id = pv.pdf_id;
IF active THEN
RETURN NEW;
ELSE
RETURN NULL;
END IF;
END;
$BODY$ LANGUAGE 'plpgsql';
ERROR: syntax error at or near "$1"
LINE 1: SELECT p.active FROM $1 pv INNER JOIN pdfs p ON p.id = pv....
^
QUERY: SELECT p.active FROM $1 pv INNER JOIN pdfs p ON p.id = pv.pdf_id
CONTEXT: SQL statement in PL/PgSQL function "pdf_active_check" near line 4
When I try this kind of substitution with TEXT type variables, there isn't any problem. I can imagine it has something to do with TG_TABLE_NAME being of type NAME, but I can't find anything in the manual about the difference or how to convert. Google wasn't much help either, but I figured this is fairly trivial for those on this list...
Stephen Cuppett
steve at cuppett dot com
