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Re: "order by" days of the week

From: Roland Roberts <roland(at)astrofoto(dot)org>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: "order by" days of the week
Date: 2002-09-29 00:30:06
Message-ID: m21y7dljsh.fsf@kuiper.rlent.pnet (view raw or flat)
Thread:
Lists: pgsql-novice
>>>>> "D" == D A <lameije(at)yahoo(dot)com> writes:

    D> 2)Is there a way to store days of the week that is better than simply
    D> using varchar and performing a check. I read about the time data formats
    D> and they all seem to be more applicable to absolute times rather than
    D> simply a day of the week. I also thought about storing the days as a
    D> number between 1 and 7 then converting for display (1=Monday,
    D> 2=Tuesday...), but that didn't feel clean to me. 

The was I've seen this done is to have an extra lookup table where
1=Monday does the translation between the key (the value 1) and the
human-readable version (the value "Monday").  I've not seen it for
this particular case (days of the week), but the idea is quite
general and works fine for this case.

roland
-- 
		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland(at)rlenter(dot)com                     76-15 113th Street, Apt 3B
roland(at)astrofoto(dot)org                       Forest Hills, NY 11375

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