Re: Querying date_time for date only ?

From: Aarni Ruuhimäki <aarni(at)kymi(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Querying date_time for date only ?
Date: 2005-12-20 13:33:42
Message-ID: 200512201533.42043.aarni@kymi.com
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On Tuesday 20 December 2005 15:19, Michael Burke wrote:
> On December 20, 2005 08:59 am, Aarni Ruuhimäki wrote:
> > Hello List,
> >
> > I have a time stamp without time zone field, YYYY-MM-DD hh:mm:ss, in my
> > table. I want to also find something just for a particular day regardless
> > of the time.
> >
> > (Pg)SQL way to do this ?
>
> You can try,
>
> SELECT field::date FROM mytable;
>
> to select only the date part. Likewise, you can use field::time if you
> want to disregard the date.
>

That's neat, thanks.

I was just getting there with

WHERE ... AND EXTRACT('day' FROM res_date_time) = $day
AND EXTRACT('month' FROM res_date_time) = $month
AND ...,

which may be useful elsewhere.

> > TIA,
> >
> > Aarni
>
> HTH.
> Mike.

Merry Christmas to everyone,

Aarni

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