From: Vincent Ladlad <vincentl@ntsp.nec.co.jp>
To: 'Denis P Gohel' <sqllist@coralindia.com>
To: pgsql-sql@postgresql.org
Subject: Re: staggered query?
Date: Thu, 22 Apr 2004 16:44:53 +0800
Message-ID: <000801c42846$166f2120$643b1cac@Titanium> (raw)
In-Reply-To: <003601c4276f$ecac8980$3332a8c0@DENIS>
hey thanks! it worked:)
here's how we did it:
select sampletime from data where
(extract(seconds from sampletime)::int)::text
in (14, 17, 19);
-----Original Message-----
From: pgsql-sql-owner@postgresql.org
[mailto:pgsql-sql-owner@postgresql.org] On Behalf Of Denis P Gohel
Sent: Wednesday, April 21, 2004 3:12 PM
To: pgsql-sql@postgresql.org
Subject: Re: [SQL] staggered query?
Hi Try this..
SELECT Col1 , Col2
FROM yourtable
WHERE to_number(to_char(col1, 'SS'),'99') / 10 ) in
(10,20,30,40,50,00);
HTH
Denis
> ----- Original Message -----
> From: Vincent Ladlad <vincentl@ntsp.nec.co.jp>
> To: <vincentl@ntsp.nec.co.jp>
> Sent: Wednesday, April 21, 2004 8:23 AM
> Subject: [SQL] staggered query?
>
>
> > hi! im new to SQL, and i need to find a solution
> > to this problem:
> >
> > i have a table with two columns, the first column
> > is of type timestamp.
> >
> > the table contains hundreds of thousands of records.
> > i need to get all the entries/records at every 10 seconds interval.
> > example, given a table:
> >
> > hh/mm/ss | data
> > ---------------
> > 00:00:00 1
> > 00:00:01 2
> > 00:00:02 3
> > 00:00:03 4
> > 00:00:04 5
> > 00:00:05 6
> > 00:00:06 7
> > 00:00:07 8
> > ..
> > ..
> >
> > my query should return:
> > 00:00:10
> > 00:00:20
> > 00:00:30
> > (etc)
> >
> > is this possible? if yes, how do i do it?
> >
> > thanks!
> >
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To: pgsql-sql@postgresql.org
Cc: vincentl@ntsp.nec.co.jp, sqllist@coralindia.com
Subject: Re: staggered query?
In-Reply-To: <000801c42846$166f2120$643b1cac@Titanium>
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