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Re: Distinct down

Posted by Gandalf on 06/16/07 22:05

On Jun 16, 11:02 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> Gandalf wrote:
> > On Jun 16, 8:37 pm, Michael Fesser <neti...@gmx.de> wrote:
> >> .oO(Gandalf)
>
> >>> On Jun 16, 5:23 pm, Gandalf <goldn...@gmail.com> wrote:
> >>> I feel like I need to explain it more clearly.
> >>> Like the last users that watch my card in a date site. I wont that if
> >>> I entered both month ago and second ago the query steel pull me as the
> >>> last user that entered the card
> >> Still confusing, but do you want to get the last entry from a database
> >> table? Then you have to implement something to get the records in a
> >> specific order (database records don't have any specific order by
> >> default), for example the date when the record was inserted or updated.
> >> Then sorting by date and fetching the last record is trivial.
>
> >> Micha
>
> > When user enter other user card there's a registry of the both user's
> > id and the auto increment number that uses as row id.
> > Now when I write this query :
> > "select distinct visit from `last_users` where host='$_REQUEST[num]'
> > order by id desc limit 10"
> > I get the last 10 users that visit the host card only if it's their
> > first time to visit him. otherwise the query consider there first
> > entry as the unique row.
> > I hope I explained it better now.
>
> > thank you
>
> First of all, this is not a PHP question - it's a database question.
> You should be asking in a database-related newsgroup.
>
> Second, as Michael indicated, you need something to sort on. If you
> don't store a timestamp or something relating to when the user signs on,
> you have nothing to sort on.
>
> I'd suggest you follow up in the appropriate newsgroup.
>
> --
> ==================
> Remove the "x" from my email address
> Jerry Stuckle
> JDS Computer Training Corp.
> jstuck...@attglobal.net
> ==================

Ho, I'm sorry. It seemed very related, and sens you guys where always
so nice and helpful I assume you wold not mine....

 

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