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Date: Tue, 18 Mar 2003 19:19:50 +0100
From: Tomasz Myrta <jasiek@klaster.net>
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To: Matthew Nuzum <cobalt@bearfruit.org>
Cc: Postgres SQL <pgsql-sql@postgresql.org>
Subject: Re: showing records from the last 20 min
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Użytkownik Matthew Nuzum napisał:
> I know this is such a simple question, but I can't find the answer in
> the manual and I've tried very hard to find it.
> 
> I want to show all the records in a table that occurred in the last 20
> min.
> 
> So, maybe something like:
> select * from sys_logins WHERE tstamp >= now() - '00:20';
> 
> on pg 7.3.2 this produces the error:
> ERROR:  Bad timestamp external representation '00:20'
>  
> Thanks for any help,
Did you mean:
select * from sys_logins
WHERE tstamp >= now()-cast('20:00' as interval);
?

Regards,
Tomasz Myrta