From: Oliver Elphick <olly@lfix.co.uk>
To: Doppelganger <quadratini@sni.ph>
Cc: pgsql-sql@postgresql.org
Subject: Re: convert sum (interval) to seconds
Date: 03 Sep 2002 12:11:10 +0100
Message-ID: <1031051470.18322.12.camel@linda> (raw)
In-Reply-To: <1031049935.25016.14.camel@tiger-work.sni.ph>
References: <1031049935.25016.14.camel@tiger-work.sni.ph>
On Tue, 2002-09-03 at 11:45, Doppelganger wrote:
> How can I convert sum(interval) to seconds?
...
> If I say,
> select sum(interval) from tablename where login='john';
> it will give me 00:45:28 (That's 45 mins, and 28 secs).
> How can I convert that to seconds? Can I possibly do it
> in just one query? Thank you
Here's one way; I'm not sure if there may not be something more
efficient, though:
junk=# select sum(if) from i;
sum
----------
00:45:28
(1 row)
junk=# select extract (minute from sum(if)) * 60 + extract (second
from sum(if)) from i;
?column?
----------
2728
(1 row)
--
Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight, UK
http://www.lfix.co.uk/oliver
GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C
========================================
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To: pgsql-sql@postgresql.org
Cc: olly@lfix.co.uk, quadratini@sni.ph
Subject: Re: convert sum (interval) to seconds
In-Reply-To: <1031051470.18322.12.camel@linda>
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