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Re: SQL Programming Question

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Hi Tony
 
-- i usually
INSERT the record
--then check for PK VIOLATION e.g.
IF PK_VIOLATION then UPDATE record

is FoxPro still supported???
Martin Gainty
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> Date: Fri, 10 Sep 2010 23:07:11 -0400
> Subject: SQL Programming Question
> From: tony@xxxxxxxxxxxxxxxxxxx
> To: pgsql-general@xxxxxxxxxxxxxx
>
> Coming from 25 years of programming applications based on dBASE and FoxPro
> tables, I have a question about how to deal with a programming task.
>
> I have a situation where I receive a file with transactions that have a
> unique key from a vendor. These transactions should only be imported into
> my system once, but the vendor system will occasionally resend a
> transaction by mistake.
>
> The way I am currently handling this with Micorosft ADO and FoxPro files
> is to open a table with an index on the vendor key and seek on the key. If
> there is no match I add it, if there is a match I put it in an exception
> file to be manually checked.
>
> Using PostgreSQL I can't open a table and do seeks against an index. I
> could do a select against the database and see if 0 records are returned,
> but that seems to take more time than doing a seek on an index. Is there a
> more SQL friendly way of handling this task?
>
>
> --
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