From: Albert Cervera Areny <albert@sedifa.com>
Organization: Sedifa, S.L.
To: pgsql-performance@postgresql.org
Subject: Re: Table Inheritence and Partioning
Date: Wed, 17 Jan 2007 12:01:51 +0100
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Currently foreign keys don't work that way. You will need your data to be i=
n=20
table persons if you want the foreign key to work correctly. Otherwise you=
=20
could create your own trigger to ensure the foreign key restriction you nee=
d.

I'm no expert at all and it seems there are non trivial issues that have to=
 be=20
solved in order to make foreign keys behave in the way you'd expect.

A Dimecres 17 Gener 2007 11:42, ramachandra.bhaskaram@wipro.com va escriure:
> Hi,
>
> We are having 3 tables;
> 1. persons <-- Base table and no data will be inserted in this table.
> 2. Person1 <-- Inherited table from persons all data will be inserted in
> this table. 3. PersonalInfo  <-- which is storing all personal information
> of the persons and is having the foreign key relationship with the persons
> table.
>
> When we try to insert the data in the personalInfo table it is throwing t=
he
> error stating the primary key does not contain the given value.   But, if=
 I
> try to select from the persons table it is showing the records from its
> inherited tables as well.     Can anybody tell me what might be the probl=
em
> here?   Or else any help regarding the same will be of very much help.
>
> Following is the table structure;
> ---------------------------------------------------------------------
> Create Table persons (
> name varchar,
> age int,
> dob varchar,
> constraint pKey primary key(name)
> );
>  create table person1 ( ) inherits(persons);
>
> Create table personalInfo (
> name varchar,
> contact_id int,
> contact_addr varchar,
> constraint cKey primary key(contact_id),
> constraint fKey foreign key(name) references persons(name)
> );
> -------------------------------------------------------------------------=
=2D-
>-----------------------
>
> Thanks In Advance,
> Ramachandra B.S.
>
>
>
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=2D-=20
Albert Cervera Areny
Dept. Inform=E0tica Sedifa, S.L.

Av. Can Bordoll, 149
08202 - Sabadell (Barcelona)
Tel. 93 715 51 11
=46ax. 93 715 51 12

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