Re: Function in selection?
От | Jean-Luc Lachance |
---|---|
Тема | Re: Function in selection? |
Дата | |
Msg-id | 3E711549.78B64201@nsd.ca обсуждение исходный текст |
Ответ на | Re: Function in selection? ("Peter Darley" <pdarley@kinesis-cem.com>) |
Список | pgsql-general |
I guess you want the most recent... SELECT CASE WHEN cena=0 THEN cenaeur*(SELECT eur FROM devizni WHERE date <= oglasi.date ORDER BY date DESC LIMIT 1) ELSE cena END AS cena, CASE WHEN cenaeur=0 THEN cena/(SELECT eur FROM devizni WHERE date <= oglasi.date ORDER BY date DESC LIMIT 1) ELSE cenaeur END AS cena_eur from oglasi ORDER BY posr, id_regije; "Dousak May (Phoebus Apollonus)" wrote: > > Cool, this works, thanks!! > > I remembered one more thing... I promise this is the last one :) > > Both tables have date entries; how can I replace OFFSET 20 with "where > date <= date from current record from oglasi"? :/ I know, I know, I'm > terrible...sorry :/ > > Tnx, > > May > > > There is no need for the assignment in the then clause. > > > SELECT CASE WHEN cena=0 THEN > > cenaeur*(SELECT eur FROM devizni ORDER BY eur OFFSET 20 LIMIT 1) > > ELSE cena END AS cena, > > CASE WHEN cenaeur=0 THEN > > cena/(SELECT eur FROM devizni ORDER BY eur OFFSET 20 LIMIT 1) > > ELSE cenaeur END AS cena_eur > > from oglasi > > ORDER BY posr, id_regije; > > ---------------------------(end of broadcast)--------------------------- > TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/docs/faqs/FAQ.html
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