Message-ID: <4EE08CFE.3090209@gmx.net>
Date: Thu, 08 Dec 2011 11:10:06 +0100
From: Andreas <maps.on@gmx.net>
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To: Emre Hasegeli <emre.hasegeli@tart.com.tr>
CC: pgsql-sql@postgresql.org
Subject: Re: Question on imports with foreign keys
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	<op.v55w0nozk2xoe5@tart-hasegeli-development>
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Am 08.12.2011 09:39, schrieb Emre Hasegeli:
> On Thu, 08 Dec 2011 08:48:51 +0200, Andreas <maps.on@gmx.net> wrote:
>
>> How is the easiest way to to find the customer.id of the new 
>> customers so I can insert the projectinfos?
>>
>
> It is easy to select rows not related with another table. One of the 
> following queries can be used.
>
>> Select * from "customers" where id not in (select "customerId" from 
>> "projectinfos")
>
I'm sorry I wasn't clear enough describing the scenario.

Lets's say there were already 1000 records in the customers table.
Now I add 357 new customers to this table.

If I use one of your queries I'd get all 1357 entries of customers since 
"project_x.projectinfos" would be newly created for this project and 
therefor empty.

I need to know which customers.id was created for which line in the 
temporary table that I read in with copy.
When I have those ids I can fill "project_x.projectinfos" with just 
those new 357 customer.ids and foreign keys refering the new lookup-tables.