Re: displaying duplicate records...

From: Date: Wed, 04 Dec 2002 11:44:36 +0000
Subject: Re: displaying duplicate records...
References: 1 2  Groups: php.db 
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Ok I see, and how would you catch the error people get, when they send it again ? "Bastian Vogt" <bastian.vogt@komtel.net> wrote in message news:3DEDEB40.17B87F83@komtel.net... > Hi, > > there's an elegant way to stop people from uploading the infos more than one > time. > And it's easy to do. You just have to figure out which fields are not allowed to > have the same values and put those fields into an unique key. > ALTER TABLE projekt ADD UNIQUE(voornaam, achternaam, email) > would just allow one entry with the same names and email. > > The query you're searching may be like this: > $query="SELECT COUNT(email) as cnt, voornaam,achternaam,leeftijd,ID,email FROM > modellen GROUP BY email HAVING cnt >1"; > > HTH, > Bastian > > > Marco Alting schrieb: > > > I have a database which allows people to upload info and foto's. There's a > > unique ID field, but some people tend to upload their info more than once > > (its a contest site). What I'm able to do is to see how may duplicates there > > are using the following statement: > > > > $query="SELECT COUNT(*) as cnt, voornaam,achternaam,leeftijd,ID,email FROM > > modellen GROUP BY email HAVING cnt >1"; > > > > But this only gives me numbers. Does anyone know how to display every record > > that has multiple duplicate ? > > > > Or is there an elegant way to stop people from entering their info more than > > once? >

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