From: Tomasz Myrta <jasiek@klaster.net>
To: azwa@nc.com.my
Cc: pgsql-sql@postgresql.org
Subject: Re: time series data
Date: Wed, 21 Jan 2004 10:37:11 +0100
Message-ID: <400E4847.1000908@klaster.net> (raw)
In-Reply-To: <OF79EF187C.A5E0B2D9-ONFFFFFF50.004B0C31@nc.com.my>
References: <OF79EF187C.A5E0B2D9-ONFFFFFF50.004B0C31@nc.com.my>
Dnia 2004-01-21 09:53, Użytkownik azwa@nc.com.my napisał:
> time_key integer not null default nextval('time_seq'::text)
> Example of data in time table:
> Time_key yr_id month_id month_desc day_id
> 1999 1 Jan 1
> 1999 1 Jan 2
> 2000 1 Jan 1
Use this integer sequence and interval datatype to get date result:
your_date='1994-01-01'::date+'1 day'::integer * time_key
Now you can do whatever you want with this date - look at Postgresql
documentation "6.8. Date/Time Functions and Operators" -> "extract"
Regards,
Tomasz Myrta
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Cc: jasiek@klaster.net, azwa@nc.com.my
Subject: Re: time series data
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