Re: COPY FROM - how to identify results?

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От Jaime Silvela
Тема Re: COPY FROM - how to identify results?
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Msg-id 46139D80.1010202@bear.com
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Ответ на Re: COPY FROM - how to identify results?  (Klint Gore <kg@kgb.une.edu.au>)
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I can't use triggers because I need a specific "my_id".
Here's the scenario: a user is browsing the web page for portfolio_id =
3, and wants to update the values. He uploads a CSV file, and I need its
entries to be tagged with portfolio_id = 3, as another user could be
uploading a CSV file for portfolio_id = 9.

As suggested by John Burger, I think the cleanest way to deal with this
is to have the CSV file COPY'd to a TEMP table, local to the user's
session, and from there inserted with INSERT INTO portfolio(field-1, ..
field-n, portfolio_id)   SELECT field-1, .. field-n, 3 FROM ....;

Thank you,
Jaime

Klint Gore wrote:
> On Tue, 03 Apr 2007 12:45:54 -0400, Jaime Silvela <JSilvela@Bear.com> wrote:
>
>> I'd like to be able to do something like
>> COPY mytable (field-1, ..  field-n, id = my_id) FROM file;
>>
>
> How do you get my_id?  Can you get it in a trigger?  Triggers still fire
> with copy so if you can get a trigger to fill in the id column you can
> copy with just the field names.
>
> klint.
>
> +---------------------------------------+-----------------+
> : Klint Gore                            : "Non rhyming    :
> : EMail   : kg@kgb.une.edu.au           :  slang - the    :
> : Snail   : A.B.R.I.                    :  possibilities  :
> : Mail      University of New England   :  are useless"   :
> :           Armidale NSW 2351 Australia :     L.J.J.      :
> : Fax     : +61 2 6772 5376             :                 :
> +---------------------------------------+-----------------+
>
>


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