| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: differnce from ansi sql standard - unicode strings? |
| Date: | 2009-02-17 15:09:52 |
| Message-ID: | 499AD340.4050502@gmx.net |
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| Thread: | |
| Lists: | pgsql-hackers |
Pavel Stehule wrote:
> I found BNF for SQL 2003 and I found there some small difference.
> Standard use keyword ESCAPE, but PostgreSQL use keybord UESCAPE.
>
> Anybody knows reason?
>
> <Unicode character string literal> ::=
> [ <introducer> <character set specification> ]
> U <ampersand> <quote> [ <Unicode representation> ... ] <quote>
> [ { <separator> <quote> [ <Unicode representation> ... ] <quote> }... ]
> [ ESCAPE <escape character> ]
My copy has
<Unicode character string literal> ::=
[ <introducer><character set specification> ]
U<ampersand><quote> [ <Unicode representation>... ] <quote>
[ { <separator> <quote> [ <Unicode representation>... ] <quote> }... ]
<Unicode escape specifier>
<Unicode escape specifier> ::= [ UESCAPE <quote><Unicode escape
character><quote> ]
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