From: Stephan Szabo <sszabo@megazone23.bigpanda.com>
To: Rajesh Kumar Mallah <mallah@trade-india.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: SQL help for efficient time handling..
Date: Sat, 22 Mar 2003 08:17:19 -0800 (PST)
Message-ID: <20030322081350.R1246-100000@megazone23.bigpanda.com> (raw)
In-Reply-To: <200303221332.33121.mallah@trade-india.com>
On Sat, 22 Mar 2003, Rajesh Kumar Mallah wrote:
> To get current_time_id i use a query like
> SELECT time_id from time_dimension where sql_time=date_trunc('minute' , cast(now() as time without time zone) );
>
> it works but uses seq_scan
> Seq Scan on time_dimension (cost=0.00..35.00 rows=5 width=4) (actual time=4.75..8.16 rows=1 loops=1)
> Filter: ((sql_time)::interval = date_trunc('minute'::text, ((now())::time without time zone)::interval))
> Total runtime: 8.20 msec
How about something like:
select time_id from time_dimension where sql_time=
cast(date_trunc('minute', now()) as time);
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To: pgsql-sql@postgresql.org
Cc: sszabo@megazone23.bigpanda.com, mallah@trade-india.com
Subject: Re: SQL help for efficient time handling..
In-Reply-To: <20030322081350.R1246-100000@megazone23.bigpanda.com>
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