From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Magdalena Komorowska <meluzyna@w3.net.pl>
Cc: pgsql-sql@postgresql.org
Subject: Re: Date Interval
Date: Tue, 6 Dec 2005 11:54:05 -0500 (EST)
Message-ID: <200512061654.jB6Gs5d14178@candle.pha.pa.us> (raw)
In-Reply-To: <20051206135906.ECA9713E35@spinet.pl>
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 TABLE
test=> INSERT INTO test VALUES ('3');
INSERT 0 1
test=> SELECT current_timestamp + cast(x || ' months' AS INTERVAL) FROM
test;
?column?
-------------------------------
2006-03-06 11:53:05.574279-05
(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
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To: pgsql-sql@postgresql.org
Cc: pgman@candle.pha.pa.us, meluzyna@w3.net.pl
Subject: Re: Date Interval
In-Reply-To: <200512061654.jB6Gs5d14178@candle.pha.pa.us>
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