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?

Thanks Duanne,

I am, as usuual, out of my depth!

SELECT tDistrictPostHolders.DistPostID,
tDistrictPostHolders.MemberID, tDistrictPostHolders.YearID,
tDistrictPostHolders.tblDistOfficeID
FROM tDistrictPostHolders
WHERE (((tDistrictPostHolders.DistPostID) In (SELECT [DistPostID]
FROM [tDistrictPostHolders] As Tmp GROUP BY
[DistPostID],[MemberID],[YearID] HAVING Count(*)>1 And [MemberID] =
[tDistrictPostHolders].[MemberID] And [YearID] =
[tDistrictPostHolders].[YearID])))
ORDER BY tDistrictPostHolders.DistPostID,
tDistrictPostHolders.MemberID, tDistrictPostHolders.YearID;

Cheers,

Robin

At 28/03/2013 07:32 AM, you wrote:
>Robin,
>What is the SQL view of the "Find Duplicates" query?
>
>Duane Hookom MVP
>MS Access
>
>----------------------------------------
> > 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
> > >
> > >
> > >
> > >------------------------------------
> > >
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> > >
> > >
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
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>
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