Обсуждение: Last record

Leao Torre do Vale wrote:

> How can select one field of last
> record of table?

There is no such thing as the "last record of a table" in SQL. Somehow
you must be able to describe what you mean with "last record" and how to
identify that. This would then be translated into a qualification (WHERE
clause) and is the answer to your question.


Jan

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Select * from <tablename> where <...> desc limit 1;

Desc = from the bottom up, limit 1 = just one record.

Best regards,
Chris

On Wednesday 24 July 2002 10:36 am, Leao Torre do Vale wrote:
> Dear Sir,
>
> If you already have the answer of the question below please, send to me.
>
> Best Regards
>
> Leao
>
> Maputo - Mozambique
>
> How can select one field of last
> record of table?
>
> (ex: SELECT LAST ....)
>
> Thanks

select * from foo_table order by oid desc limit 1;



>From: Chris Ruprecht <chrup@earthlink.net>
>To: "Leao Torre do Vale" 
><elefante400@hotmail.com>,<pgsql-sql@postgreSQL.org>
>CC: Jan Wieck <JanWieck@Yahoo.com>
>Subject: Re: [SQL] Last record
>Date: Wed, 24 Jul 2002 13:56:50 -0400
>
>Select * from <tablename> where <...> desc limit 1;
>
>Desc = from the bottom up, limit 1 = just one record.
>
>Best regards,
>Chris
>
>On Wednesday 24 July 2002 10:36 am, Leao Torre do Vale wrote:
> > Dear Sir,
> >
> > If you already have the answer of the question below please, send to me.
> >
> > Best Regards
> >
> > Leao
> >
> > Maputo - Mozambique
> >
> > How can select one field of last
> > record of table?
> >
> > (ex: SELECT LAST ....)
> >
> > Thanks
>
>---------------------------(end of broadcast)---------------------------
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