You can always do an insert and add a trigger that checks the key for
existence. If it exists do the update instead.
That way you have one line of code doing both inserts and updates.
The only problem with it is that it looks confusing from an outsiders
perspective, so it would have to be documented very well.
Sim
"Paul R" <blueaxon@gmail.com> wrote in message
news:3eb42da105021817342feb0b2d@mail.gmail.com...
> I need some advice.. I am new to PG8 - I am working on the project
> that needs to load data daily to PostgreSQL from the text file.. the
> text file is 40MB comma delimited file with row consisting of 20-30
> fields and couple thousands of rows..
>
> so the data needs to be parsed and if the row exists it needs to be
> updated, otherwise new record is going to be created. My problem is
> with parsing:
>
> 1-what would be a good approach to do it? is plpgSQL suitable for
> this? or should I use PHP or other language to to that and run as a
> cron job/service?
>
> 2-how about committing transactions? would there be a problem if it
> is done at the end of all the updates?
>
> Thank you
> Paul
>
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