ACCESS FEED: RE: [MS_AccessPros] How do I prevent duplication of records?

Rabu, 27 Maret 2013

RE: [MS_AccessPros] How do I prevent duplication of records?

Robin,
What is the SQL view of the "Find Duplicates" query?

Duane Hookom MVP
MS Access

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> To: MS_Access_Professionals@yahoogroups.com
> From: robinski@mymail.net.au
> Date: Thu, 28 Mar 2013 07:27:14 +1100
> Subject: RE: [MS_AccessPros] How do I prevent duplication of records?
>
> G'Day Graham.
>
> I have run a "Find Duplicates" query on the table to prove that all
> entries are unique.
>
> I have built the index on the three fields as you described.
>
> An error message advises that " .. duplicates would be established .. .,."
>
> Now I am really confused !!!!
>
> Cheers,
>
> Robin
>
> At 27/03/2013 08:40 PM, you wrote:
> >Hi Robin
> >
> >You need to create a composite index comprising the three fields.
> >
> >In table design view, click the Indexes button to show the floating Indexes
> >window.
> >
> >In the left column (Index Name) of the first blank row, type a name, such
> >"Member_Year_Post", and in the second column (Field Name) select MemberID.
> >
> >In the properties below, change Unique to "Yes".
> >
> >In the next two rows, select YearID and PostID for Field Name (leave Index
> >Name blank).
> >
> >You will now have an index which will disallow two records with the same
> >combination of these three fields.
> >
> >Cheers,
> >Graham
> >
> > > To: MS_Access_Professionals@yahoogroups.com
> > > From: robinski@mymail.net.au
> > > Date: Wed, 27 Mar 2013 11:52:53 +1100
> > > Subject: [MS_AccessPros] How do I prevent duplication of records?
> > >
> > > I have a table which includes the fields: "MemberID" and "YearID" and
> >"PostID".
> > >
> > > How do I prevent duplication of the combination of the three fields
> > > berceuse data entry is not by Access form?
> > >
> > > Data entry is on a remote server by ASP pages.
> > >
> > > Many Thanks.
> > >
> > > Robin Chapple
> >
> >
> >
> >------------------------------------
> >
> >Yahoo! Groups Links
> >
> >
> >
>
>
>
>
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