Re: BUG #1721: mutiple bytes character string comaprison

From: Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>
To: pgman(at)candle(dot)pha(dot)pa(dot)us
Cc: tgl(at)sss(dot)pgh(dot)pa(dot)us, books(at)ejurka(dot)com, cdliou(at)mail(dot)cyut(dot)edu(dot)tw, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #1721: mutiple bytes character string comaprison
Date: 2005-06-20 22:37:12
Message-ID: 20050621.073712.78705110.t-ishii@sra.co.jp
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> Tom Lane wrote:
> > Kris Jurka <books(at)ejurka(dot)com> writes:
> > > On Sun, 19 Jun 2005, Tom Lane wrote:
> > >> Sorry, but UTF-8 encoding doesn't work properly on Windows (yet).
> > >> Use some other database encoding.
> >
> > > Shouldn't we forbid its creation then?
> >
> > There was serious discussion of that before the 8.0 release, but
> > we decided not to forbid it. Check the archives; I don't recall
> > the reasoning at the moment.
>
> UTF8 encoding works with the C locale assuming you don't care about
> ordering of the character set, e.g. Japanese.

No, sometimes Japanese needs char ordering too and I think this is not
a Windows only problem. The real problem is Unicode defines char
orderes in totally random manner because Chinese/Japanese/Korean Kanji
characters are "Unified" in Unicode. To solve the problem, we can use
convert UTF8 to EUC_JP using CONVERT. See archives for more details.

Or you can use Unicode locale only if your platform's locale database
is not broken and you only use single locale.
--
Tatsuo Ishii

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