From: Richard Huxton <dev@archonet.com>
To: Jure Kodzoman <jure@plsavez.hr>
Cc: pgsql-sql@postgresql.org
Subject: Re: constrains problem...
Date: Wed, 07 Dec 2005 18:57:07 +0000
Message-ID: <43973083.3070803@archonet.com> (raw)
In-Reply-To: <1133959084.5964.6.camel@localhost.localdomain>
References: <1133959084.5964.6.camel@localhost.localdomain>
Jure Kodzoman wrote:
> What i would like to do is create a trigger or a constraint which would
> on delete of an entry from table1 also deleted all entries containing
> code from
> table1 in table_rel. When i try to put a constraint via PgAdmin3 it says
> it can't do
> it because 't1code' is not primary key or unique.
>
> I understand the error, but what i would like to know is how to delete
> all fields from table_rel containing the 'table1' vaule being equal to
> 'code' being deleted from table1.
You put two foreign keys ON table_rel, referencing table1 and table2.
Set both to delete on cascade and you're done.
--
Richard Huxton
Archonet Ltd
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To: pgsql-sql@postgresql.org
Cc: dev@archonet.com, jure@plsavez.hr
Subject: Re: constrains problem...
In-Reply-To: <43973083.3070803@archonet.com>
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