Re: quoting psql varible as identifier

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>
Date: 2010-01-04T14:59:48Z
Lists: pgsql-hackers
Pavel Stehule <pavel.stehule@gmail.com> writes:
> I have one question. If I understand well, the function fmtId isn't
> multibyte safe? So why is possible to use it in pg_dump?

pg_dump is only guaranteed to work correctly in the server encoding.
If you force it to use a client_encoding different from the server's,
it might or might not work, for reasons far beyond that one --- the
big problem usually is data containing characters that have no
equivalent in the client encoding.  So I'm not particularly excited
about whether fmtId is multibyte safe within pg_dump.  If we were to try
to use it in more general contexts, it would probably need more work.

			regards, tom lane