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Re: How can I remove duplicate entries in a sql query?

Posted by Ed Prochak on 10/01/88 11:41

BarrySDCA wrote:
> I have a database being populated by hits to a program on a server.
> The problem is each client connection may require a few hits in a 1-2
> second time frame. This is resulting in multiple database entries -
> all exactly the same, except the event_id field, which is
> auto-numbered.
>
> I need a way to query the record w/out duplicates. That is, any
> records exactly the same except event_id should only return one record.
>
> Is this possible??
>
> Thank you,
>
> Barry

Hopefully you found the suggestions on how to filter out the duplicates
helpful.

I just want to point out that this shows the weakness of using a
pseudokey as the primary key of a table. If they really are the same
events, they shouldn't be duplicated.

Actually, I don't think you have duplicate events, since at least some
of the connection hits must have failed or timed out. Otherwise why
were there retries? So they are not really the same. Are you maybe
missing a status or result attribute?

(but the ID field is still a poor crutch for a possibly weak design.)

just some food for thought.
Ed.

 

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