From: | Grzegorz Tańczyk <goliatus(at)polzone(dot)pl> |
---|---|
To: | David Johnston <polobo(at)yahoo(dot)com> |
Cc: | 'Merlin Moncure' <mmoncure(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: Refreshing functional index |
Date: | 2012-08-31 18:41:56 |
Message-ID: | 11816457.568391346438363182.JavaMail.root@Polzone |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
Hello,
W dniu 2012-08-31 20:25, David Johnston pisze:
> The question becomes how do you update the "item id" on the "groups"
> table when you add new records to "items".
I have a trigger on items table:
CREATE TRIGGER items_insert
BEFORE INSERT
ON items
FOR EACH ROW
EXECUTE PROCEDURE items_oninsert();
CREATE OR REPLACE FUNCTION items_oninsert()
RETURNS trigger AS
$BODY$
BEGIN
UPDATE groups SET last_item = NEW.id WHERE id=NEW.group AND
(last_item IS NULL OR last_item<NEW.id);
RETURN NEW;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE;
Thanks!
--
Regards,
Grzegorz
From | Date | Subject | |
---|---|---|---|
Next Message | fellipeh | 2012-08-31 19:12:32 | Re: Tigger after delete with plpgsql |
Previous Message | Alan Hodgson | 2012-08-31 18:38:37 | Re: Tigger after delete with plpgsql |