From: | terry(at)greatgulfhomes(dot)com |
---|---|
To: | "'Medi Montaseri'" <medi(dot)montaseri(at)intransa(dot)com>, <missive(at)hotmail(dot)com> |
Cc: | <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: newbie question for return date |
Date: | 2002-10-29 02:27:20 |
Message-ID: | 002001c27ef2$b5a3ee00$2766f30a@development.greatgulfhomes.com |
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Thread: | |
Lists: | pgsql-general |
In order for your proposed result of array[-1] to be consistent/predictable,
an ORDER BY sorting action will have to be performed *anyway* (in order to
consistently return the last record(s) from the recordset), so doing an
ORDER BY field_name DESC LIMIT 1 will have the same effect.
Just my 2 cents
Terry Fielder
Network Engineer
Great Gulf Homes / Ashton Woods Homes
terry(at)greatgulfhomes(dot)com
> -----Original Message-----
> From: pgsql-general-owner(at)postgresql(dot)org
> [mailto:pgsql-general-owner(at)postgresql(dot)org]On Behalf Of Medi Montaseri
> Sent: Monday, October 28, 2002 8:13 PM
> To: missive(at)hotmail(dot)com
> Cc: pgsql-general(at)postgresql(dot)org
> Subject: Re: [GENERAL] newbie question for return date
>
>
> Hey a suggestion, what if PG would support the negative limit as in
> select * from table limit -1 to mean limit it from the other end of
> list.....
>
> Sort of like some languages where they support
>
> array[1] vs array[-1].
>
> I'm not sure, but it looks like order by will sort the list which is
> expensive and then
> allow us to get the first chunk specified by limit.
>
> Lee Harr wrote:
>
> >In article <xEgv9(dot)2668$h_4(dot)374526(at)news20(dot)bellglobal(dot)com>,
> tviardot wrote:
> >
> >
> >>Hi guys, here a newbies question.
> >>I've made a table with some action and date.
> >>How may i query the most recent date. (I'd like to return
> only the record
> >>which have the most recent date ).
> >>Tx
> >>
> >>
> >>
> >>
> >
> >How about:
> >
> >SELECT * FROM t ORDER BY d DESC LIMIT 1;
> >
> >
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