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@greatgulfhomes.com
> -----Original Message-----
> From: pgsql-general-owner@postgresql.org
> [mailto:pgsql-general-owner@postgresql.org]On Behalf Of Medi Montaseri
> Sent: Monday, October 28, 2002 8:13 PM
> To: missive@hotmail.com
> Cc: pgsql-general@postgresql.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 <xEgv9.2668$h_4.374526@news20.bellglobal.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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