Re: Help retrieving lastest record
От | Andrew Perrin |
---|---|
Тема | Re: Help retrieving lastest record |
Дата | |
Msg-id | Pine.LNX.4.21.0102161547040.20198-100000@nujoma.perrins обсуждение исходный текст |
Ответ на | Help retrieving lastest record (Steve Meynell <steve@candata.com>) |
Список | pgsql-sql |
How 'bout these: fgdata=# select * from fruit order by dt desc limit 1;number | fruit | dt --------+---------+------------------------ 20 | Oranges | 2000-06-07 00:00:00-05 (1 row) fgdata=# select * from fruit where fruit='Apples' order by dt desc limit 1;number | fruit | dt --------+--------+------------------------ 15 | Apples | 1999-07-20 00:00:00-05 (1 row) Cheers, Andy Perrin ---------------------------------------------------------------------- Andrew J Perrin - Ph.D. Candidate, UC Berkeley, Dept. of Sociology Chapel Hill, North Carolina, USA - http://demog.berkeley.edu/~aperrin aperrin@socrates.berkeley.edu - aperrin@igc.apc.org On Thu, 15 Feb 2001, Steve Meynell wrote: > Ok what I am trying to do is select out of the database the latest > record meeting a certain criteria. > > Example: > > Number | Fruit | Date > 15 Apples July 20, 1999 > 20 Oranges June 7, 2000 > 13 Pears Jan 31, 2000 > 17 Apples April 10, 1999 > Now what I need to do is select the oranges out because the date is the > latest one, something like: > > select * from basket where max(date); > This would yield me: > 20 Oranges June 7, 2000 > > I know this doesn't work but I need something like it. > or something like > > select * from basket where max(date) and fruit='Apples'; > This would yield me: > 15 Apples July 20, 1999 > > Thank you in advance, > > > -- > Steve Meynell > Candata Systems > > >
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