Re: Converting/formatting timestamp arithmetic

From: Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
To: Eel <eel(at)javabox(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Converting/formatting timestamp arithmetic
Date: 2002-03-14 08:32:21
Message-ID: 20020314093221.A11295@zf.jcu.cz
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On Thu, Mar 07, 2002 at 05:42:00PM -0800, Eel wrote:
> Hi,
> Is there any easy way to convert the result of timestamp
> arithmetic to a simple decimal number?
>
> I have something like:
>
> select current_timestamp - timein as daysat from transcations
>
> daysat looks like:
>
> 3 days 12:00:00
>
> I want it to look like:
>
> 3.5

test=# select date_part('d', '3 days 12:00:00'::interval) + (1 / (24 /
date_part('h', '3 days 12:00:00'::interval)));
?column?
----------
3.5

test=# select date_part('d', '3 days 6:00:00'::interval) + (1 / (24 /
date_part('h', '3 days 6:00:00'::interval)));
?column?
----------
3.25

> I fooled around a bit to_number(text, text). It seems like

IMHO better is extract relavant values and count it.

Karel

--
Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
http://home.zf.jcu.cz/~zakkr/

C, PostgreSQL, PHP, WWW, http://docs.linux.cz, http://mape.jcu.cz

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