Date: Tue, 18 Apr 2006 20:31:01 +0200
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-sql@postgresql.org
Subject: Re: Looking for some help with cascading updates...
Message-ID: <20060418183101.GA31339@KanotixBox>
References: <647d31c20604181119m43ba3c7ay3d467dd9446a6fd8@mail.gmail.com>
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Mark True <darfoo@gmail.com> schrieb:

> 
> Here is the question:
> 
> I have a situation where I need to create triggers to cascade an insert
> operation to many tables to maintain foreign key constraints. 
> 
> So at a high level
> 
> INSERT INTO myTable (Name, Address, Zip) VALUES ('Mark', '3 Dingle St.',
> '01832')
> 
> myTable has a relation to two other tables, which contain Zip and Address. 
> Before I insert into  myTable I want to:
> 
> Check if '3 Dingle St.' exists in table Address, if not insert it
> Check if '01832' exists in table Zip and if not insert it

For such task i write a function (plpgsql). This obtains all parameters,
do the checks and insert into the other tables and the table with the fk
constraints.


HTH, Andreas
-- 
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