RE: count(*) from view??

Some time ago, I also had similar problems involving sums and maxes within
a view. When I posted a query about the max problem, the response
was that "The rule rewriter has a lot of problems with views that involve
grouping
or aggregation --- until it's fixed, you need to be very wary of that
combination of features".

(Full reply at
http://www.postgresql.org/mhonarc/pgsql-bugs/1999-11/msg00009.html)

Now I'm not sure what the current state of development in that regard is,
but judging
from your experience, it looks like there's still a problem.

Not much help I'm sure, but there you go.

Sean.


> -----Original Message-----
> From: pgsql-general-owner@hub.org [mailto:pgsql-general-owner@hub.org]On
> Behalf Of Greg Brzezinski
> Sent: Friday, 8 September 2000 11:32 PM
> To: pgsql-general@postgresql.org
> Subject: [GENERAL] count(*) from view??
>
>
> create table test (id int, user_name char(30));
> insert into test values (1, 'John');
> insert into test values (2, 'George');
>
> create view v_test as select * from test where user_name = 'John';
>
> select count(*) from v_test;
>  count
> -------
>      2
> (1 row)      Why?...Should returns 1
>
> select count(*) from test where user_name = 'John';
>  count
> -------
>      1
> (1 row)
>
> --Greg--
>
>