postgres/doc/README.mb

postgresql 6.3 multi-byte(MB) patch PL2 README	  Mar 10 1998

						Tatsuo Ishii
						t-ishii@sra.co.jp
		  http://www.sra.co.jp/people/t-ishii/PostgreSQL/

Introduction

MB patch is intended for allowing PostgreSQL to handle multi-byte
charachter sets such as EUC(Extende Unix Code), Unicode and Mule
internal code. With the MB patch you can use multi-byte character sets
in regexp and LIKE. The encoding system chosen is determined at the
compile time.

The patch also fixes some problems concerning with 8-bit single byte
character sets including ISO8859. (I would not say all of problems
have been fixed. I just confirmed that the regression test ran fine
and a few French characters could be used with the patch. Please let
me know if you find any problem while using 8-bit characters)

How to use

After applying the MB patch, create src/Makefile.custom with a line
including:

MB=encoding_system

where encoding_system is one of:

EUC_JP			Japanese EUC
EUC_CN			Chinese EUC
EUC_KR			Korean EUC
EUC_TW			Taiwan EUC
UNICODE			Unicode(UTF-8)
MULE_INTERNAL		Mule internal

Example:

% cat Makefile.custom
MB=EUC_JP

If MB is not defined, nothing is changed except better supporting for
8-bit single byte character sets.

References

These are good sources to start learning various kind of encoding
systems.

ftp://ftp.ora.com/pub/examples/nutshell/ujip/doc/cjk.inf
	Detailed explanations of EUC_JP, EUC_CN, EUC_KR, EUC_TW
	appear in section 3.2.

Unicode: http://www.unicode.org/
	The homepage of UNICODE.

	RFC 2044
	UTF-8 is defined here.

History

Mar 10, 1998 PL2 released
	* add regression test for EUC_JP, EUC_CN and MULE_INTERNAL
	* add an English document (this file)
	* fix problems concerning 8-bit single byte characters

Mar 1, 1998 PL1 released