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Re: Filter equivalent for Access bound form

From: "David P(dot) Lurie" <dbase4(at)hotmail(dot)com>
To: pgsql-odbc(at)postgresql(dot)org
Subject: Re: Filter equivalent for Access bound form
Date: 2004-08-06 15:31:55
Message-ID: cf0894$4s3$ (view raw, whole thread or download thread mbox)
Lists: pgsql-odbc
"Jeff Eckermann" <jeff_eckermann(at)yahoo(dot)com> wrote in message
> How much testing have you done?  I have never had a
> problem with this, but then, I don't have to deal with
> any huge datasets.
I don't have any large datasets; largest table at present only has about
10,000 records.

Had created 2 views against the largest recordset for testing, one with a
WHERE clause, and 2 bound forms, each using one of the views as a
recordsource. The form using the view without the WHERE clause had the
conditions in the WHERE clause used as a filter.

I didn't put in timing code, but the filtered form seemed a little slower.
Dropped and rebuilt the test views, forms, etc. and now don't see much

Phillipe had noticed difference between Access 2000 and Access 2002/2003
mdb, but I had already been using 2002/2003, as will be distributing runtime
executable to my employees.

Can't explain the difference in performance from first testing, but will try
using filters in upcoming production version unless real world performance

> >
> > I change the SQL of pass-through queries dynamically
> > at runtime to use as
> > record sources for reports. That wouldn't work for
> > forms, as not updatable.
> >
> > Is the best approach to use an updatable view as the
> > record source, then
> > change the view definition at runtime as with a
> > passthrough query?
> Why would you need to do this?  If you want to show
> different data to different users, then you reference
> the user name (e.g. current_user or session_user) in
> your view definition.

Was just creating unique name for the temporary view, for which string
containing current_user would certainly be easier. All of my employees will
have similar table permissions at the present time, as small office and
similar tasks.

David P. Lurie

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