Hello,
I wish to perform the following query in a plsql function upon an
update/insert/delete trigger:
UPDATE entry_stats
SET entry_maxprice=MAX(item_price)
FROM item
WHERE item.item_entry_id=NEW.item_entry_id AND item.item_live = 't';
However there will be situations where there are no records for
a given item_entry_id with item_live='t'. Currently when I try
do update/insert a record so that this occurs I get the following
error 'ERROR: ExecutePlan: (junk) 'ctid' is NULL!' and the
insert/update attempt is rolled back.
In this scenario I want entry_stats.entry_maxprice to be set to zero
(which is also the default value for that column if it's any help).
Is there a good way of going about this or should I just be wrapping
the whole thing up in an
====
IF (COUNT(*) FROM item WHERE item.item_entry_id=NEW.item_entry_id AND item.item_live = 't')>0
THENUPDATE ... =MAX() ...
ELSEUPDATE SET ... =0 ...
END IF
====
?
Thanks
--
Paul McGarry mailto:paulm@opentec.com.au
Systems Integrator http://www.opentec.com.au
Opentec Pty Ltd http://www.iebusiness.com.au
6 Lyon Park Road Phone: (02) 9878 1744
North Ryde NSW 2113 Fax: (02) 9878 1755
