Re: UTF8 national character data type support WIP patch and list of open issues. - Mailing list pgsql-hackers

From Tatsuo Ishii
Subject Re: UTF8 national character data type support WIP patch and list of open issues.
Date
Msg-id 20131114.094304.846975239071362840.t-ishii@sraoss.co.jp
Whole thread Raw
In response to Re: UTF8 national character data type support WIP patch and list of open issues.  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: UTF8 national character data type support WIP patch and list of open issues.  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> Tatsuo Ishii <ishii@postgresql.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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