That does make more sense (cents? :) ).
View and rule still apply, tho. Better performance still?
create temporary table new_money (product text, cents int4);
create view v_new_money as select product, (cents::numeric/100)::numeric(10,2)
as dollars from new_money;
create rule v_new_money_upd as on update to v_new_money do instead update
new_money set product=new.product, cents=new.dollars * 100 where product =
old.product;
create rule v_new_money_del as on delete to v_new_money do instead delete from
new_money where product = old.product;
create rule v_new_money_ins as on insert to v_new_money do instead insert into
new_money (product, cents) values (new.product, new.dollars * 100);
insert into new_money (product, cents) values ('Flowbee','1995');
insert into new_money (product, cents) values ('Country Hits','995');
insert into v_new_money (product, dollars) values ('ThighMaster','39.95');
update v_new_money set dollars = '14.95' where product='Flowbee';
select * from v_new_money;
product | dollars
--------------+---------
Country Hits | 9.95
ThighMaster | 39.95
Flowbee | 14.95
(3 rows)
select * from new_money;
product | cents
--------------+-------
Country Hits | 995
ThighMaster | 3995
Flowbee | 1495
(3 rows)
CG
--- Matt Clark <[EMAIL PROTECTED]> wrote:
> > .. I can't _quite_ tell if you're serious or not ... :)
> >
> > If you are serious, are you saying to do something like:
> >
> > CREATE TABLE new_money (product text, dollars int4, cents int4);
>
> Ha :-) That would not be serious. I'm pretty sure he meant to just store
> the product cost in cents instead of dollars, e.g.
>
> > CREATE TABLE new_money (product text, cents int4);
> > INSERT INTO new_money (product, cents) values ('Flowbee','1995');
> > INSERT INTO new_money (product, cents) values ('Garth Brooks\'s
> > Greatest Hits','999');
>
> M
>
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
