| From: | Tatsuo Ishii <ishii(at)postgresql(dot)org> |
|---|---|
| To: | tgl(at)sss(dot)pgh(dot)pa(dot)us |
| Cc: | ishii(at)postgresql(dot)org, kleptog(at)svana(dot)org, maumau307(at)gmail(dot)com, laurenz(dot)albe(at)wien(dot)gv(dot)at, robertmhaas(at)gmail(dot)com, peter_e(at)gmx(dot)net, arul(at)fast(dot)au(dot)fujitsu(dot)com, stark(at)mit(dot)edu, Maksym(dot)Boguk(at)au(dot)fujitsu(dot)com, hlinnakangas(at)vmware(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: UTF8 national character data type support WIP patch and list of open issues. |
| Date: | 2013-11-14 00:43:04 |
| Message-ID: | 20131114.094304.846975239071362840.t-ishii@sraoss.co.jp |
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| Lists: | pgsql-hackers |
> Tatsuo Ishii <ishii(at)postgresql(dot)org> writes:
>>> MULE is completely evil.
>>> It has N different encodings for the same character,
>
>> What's wrong with that? It aims that in the first place.
>
> It greatly complicates comparisons --- at least, if you'd like to preserve
> the principle that strings that appear the same are equal.
You don't need to consider it because there's no place in PostgreSQL
where a MULE encoded text consists of multiple encodings as far as I
know.
BTW, same characters are assigned different code points are pretty
common in many character sets (Unicode, for example).
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp
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