Re: Date Interval
От | Bruce Momjian |
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Тема | Re: Date Interval |
Дата | |
Msg-id | 200512061654.jB6Gs5d14178@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Date Interval ("Magdalena Komorowska" <meluzyna@w3.net.pl>) |
Ответы |
Re: Date Interval
|
Список | pgsql-sql |
Magdalena Komorowska wrote: > Hi, > I hale a problem with counting interwal and I can't find what to do with > this. > I have two fields in the table: > Column | Type | Modifiers > -----------------+---------+----------- > date_in | date | > interwal_months | numeric | > -----------------+---------+----------- > > Query > SELECT date_in + INTERVAL '3 MONTH' FROM any_table > works fine of course. > > However, how to do something like that? > SELECT date_in + INTERVAL ' interwal_months MONTH' FROM any_table How about this? test=> CREATE TABLE test(x TEXT);CREATE TABLEtest=> INSERT INTO test VALUES ('3');INSERT 0 1test=> SELECT current_timestamp+ cast(x || ' months' AS INTERVAL) FROMtest; ?column?------------------------------- 2006-03-0611:53:05.574279-05(1 row) -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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