Re: SQL problem
От | Kevin T. Manley \(Home\) |
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Тема | Re: SQL problem |
Дата | |
Msg-id | 985tca$2rk6$1@news.tht.net обсуждение исходный текст |
Ответ на | SQL problem (Salvador Mainé <salvamaine@yahoo.com>) |
Список | pgsql-sql |
Here's one approach: create view vw_maxrain as select max(rain) as rain, date_part('year',day) as year from meteo group by year; select day, meteo.rain from meteo, vw_maxrain where meteo.rain=vw_maxrain.rain; "Salvador Main�" <salvamaine@yahoo.com> wrote in message news:3AA6445B.F409966F@yahoo.com... > Hello: > > I have a table with pluviometrical data > > meteo (rain float, day date) > > I want to select the the day of maximum value for each year.It should be > something like : > > > select max(rain),day from meteo group by date_part('year', day); > > > but it obiously doesn't work. > I thought of doing it with aggregates, but it's far too complicated. Is > there an 'easy' way to do this? > > > > > -- > Salva
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