subselect prob in view

From: Gary Stainburn <gary(dot)stainburn(at)ringways(dot)co(dot)uk>
To: pgsql-sql(at)postgresql(dot)org
Subject: subselect prob in view
Date: 2004-06-21 10:10:39
Message-ID: 200406211110.39940.gary.stainburn@ringways.co.uk
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Hi folks,

I've got the view:

create view nrequest_details as
select r.r_id, r_registration, r.r_chassis, r.r_vehicle,
r.r_fuel,r.r_pack_mats,
r.r_delivery, r_delivery::date-now()::date as r_remaining,
r.r_created, r.r_completed,
d.d_des, de.de_des,
u.u_id, u.u_userid, u.u_username, u.u_salesman, u.u_target,
t.t_id, t.t_des,
s.s_id, s.s_des,
c.c_id, c.c_des
from requests r, users u, request_types t,
request_states s, dealerships d, departments de, customers c
where r_d_id = d.d_id and
r_s_id = s.s_id and
r_c_id = c.c_id and
r_t_id = t.t_id and
r_d_id = d.d_id and
r_de_id = de.de_id and
r_u_id = u.u_id;

to which I want to add a count (2 eventually), so that it becomes:

create view nrequest_details as
select r.r_id, r_registration, r.r_chassis, r.r_vehicle,
r.r_fuel,r.r_pack_mats,
r.r_delivery, r_delivery::date-now()::date as r_remaining,
r.r_created, r.r_completed,
d.d_des, de.de_des,
u.u_id, u.u_userid, u.u_username, u.u_salesman, u.u_target,
t.t_id, t.t_des,
s.s_id, s.s_des,
c.c_id, c.c_des,
co.count as comments
-- cor.count as comments_unseen
from requests r, users u, request_types t,
request_states s, dealerships d, departments de, customers c
left outer join (select co_r_id, count(co_r_id) from comments group
by co_r_id) co on
co.co_r_id = r.r_id
-- left outer join (select co_r_id, count(co_r_id) from comments where
cor_viewed is null
-- group by co_r_id) co on
-- co.co_r_id = r.r_id
where r_d_id = d.d_id and
r_s_id = s.s_id and
r_c_id = c.c_id and
r_t_id = t.t_id and
r_d_id = d.d_id and
r_de_id = de.de_id and
r_u_id = u.u_id;

but I get the error:

[gary(at)eddie gary]$ psql -f goole1.sql
DROP
psql:goole1.sql:45: ERROR: Relation "r" does not exist
[gary(at)eddie gary]$

I tried using the table name instead of the alias but instead got the error:

[gary(at)eddie gary]$ psql -f goole1.sql
psql:goole1.sql:1: ERROR: view "nrequest_details" does not exist
psql:goole1.sql:45: NOTICE: Adding missing FROM-clause entry for table
"requests"
psql:goole1.sql:45: ERROR: JOIN/ON clause refers to "requests", which is not
part of JOIN
[gary(at)eddie gary]$

which at least makes sense.

--
Gary Stainburn

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