Re: Server-side support of all encodings

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Server-side support of all encodings
Date: 2007-03-26 02:20:27
Message-ID: 2099.1174875627@sss.pgh.pa.us
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ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> writes:
> PostgreSQL suppots SJIS, BIG5, GBK, UHC and GB18030 as client encodings,
> but we cannot use them as server encodings. Are there any reason for it?

Very much so --- they aren't safe ASCII-supersets, and thus for example
the parser will fail on them. Backend encodings must have the property
that all bytes of a multibyte character are >= 128.

regards, tom lane

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