Re: Combine tables while excluding duplicate entries?
From: Jeff Boyce (JeffBoyce_IF_at_msn.com-DISCARD_HYPHEN_TO_END)
Date: 01/14/05
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Date: Fri, 14 Jan 2005 05:29:59 -0800
Depends on your definition of "similar".
When you create a query, you can choose which fields you want to see. If
you choose "identical" fields from two different tables (in two different
queries), you could use a UNION query. Here's an excerpt from Access HELP
on "Union":
By default, no duplicate records are returned when you use a UNION
operation; however, you can include the ALL predicate to ensure that
all records are returned. This also makes the query run faster.
-- Good luck Jeff Boyce <Access MVP> "RacinMyLancer" <RacinMyLancer@discussions.microsoft.com> wrote in message news:E006E9DF-5C20-42D2-8A08-DE6BA2F7A0C0@microsoft.com... > I don't mean to cross-post, but I realized I posted my original question in > the wrong category (Access General Questions... moderator, feel free to > delete :)) > > I'm using Access 2002: > > I have two similarly structured tables which I would like to combine, while > excluding duplicate records. I would like to control the criteria by which a > duplicate record is deemed such (using multiple fields for duplicate > searching, rather than just one), and, if possible, be able to review and > make changes to the records selected for (or excluded from) the table merger > before the final combination takes place. > > I would think that Access would have this functionality built in, as I know > other database applications do. If it already exists, can someone point me > toward how to do it? >
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