From: Gary Stainburn <gary.stainburn@ringways.co.uk>
To: pgsql-sql@postgresql.org
Subject: foreign key question
Date: Wed, 5 Jan 2011 09:53:43 +0000
Message-ID: <201101050953.43830.gary.stainburn@ringways.co.uk> (raw)
Hi folks,
I have a table which lists facilities and another table that lists access
levels for those facilities. All straight forward using a foreign key set up
using a normal references clause.
users=# select f_id, f_desc from facilities order by f_id;
f_id | f_desc
------+---------------------
1 | Login
3 | Users
....
16 | Itinerary
....
31 rows)
users=# select * from facility_levels ;
fl_f_id | fl_level | fl_desc
---------+----------+-----------------------
16 | 1 | Own itinerary
16 | 2 | Dealer/Dept itinerary
16 | 3 | Dept itinerary
16 | 4 | Dealer/Dept On/Off
16 | 5 | Dept On/Off
16 | 6 | All On/Off
16 | 7 | All features
(7 rows)
users=#
Now I want to set up a new access level table specific to the itinerary, along
the lines of
u_id int4 not null references users(u_id)
fl_level int4 not null references facility_levels(16, fl_level)
Firstly, is this possible, and secondly how would I do it?
--
Gary Stainburn
I.T. Manager
Ringways Garages
http://www.ringways.co.uk
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To: pgsql-sql@postgresql.org
Cc: gary.stainburn@ringways.co.uk
Subject: Re: foreign key question
In-Reply-To: <201101050953.43830.gary.stainburn@ringways.co.uk>
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