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Date: Thu, 24 Oct 2002 14:28:33 +0300 (EEST)
From: Achilleus Mantzios <achill@matrix.gatewaynet.com>
To: andres javier garcia garcia <andresjavier.garcia@wanadoo.es>
Cc: PostgreSQL List <pgsql-sql@postgresql.org>
Subject: Re: ORDER the result of a query by date 
In-Reply-To: <200210241054.g9OAs9c15358@natura.cebas.csic.es>
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On Thu, 24 Oct 2002, andres javier garcia garcia wrote:

> Hello;
> I've got the result of a query that appears as:
>  cod_variable | cod_station | year | month | day | rain
> ---------------------+-------------------+--------+----------+------+------
>  30201           | 7237           | 1953 |        1 |   1 |    2
>  30201           | 7237           | 1953 |        2 |   1 |    5
>  30201           | 7237           | 1953 |        3 |   1 |    0
>  30201           | 7237           | 1953 |        4 |   1 |   -3
> .....
>
> (Of course, thanks to Stephan Szabo for the method to obtain this from my
> strange source data. I didn't think this was possible.)
>
> After have done this query I've realized that I need the data to be ordered
> by date. Do you have any suggestion?

select <your cols>,year,month,day from <your table> order by
year,month,day.

Also take a look at date,timestamp data types.
Note that you can process your initial "strange" source
using tools as awk,perl,sh,C programs to format
your datasets in sql insert statements or
copy format.

>
> Best regards
> ----------
> Javier
>
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==================================================================
Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
Nikis 4, Glyfada
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        mantzios@softlab.ece.ntua.gr