Re: quotes in SET grammar

Поиск
Список
Период
Сортировка
От Bruce Momjian
Тема Re: quotes in SET grammar
Дата
Msg-id 200202261813.g1QIDUc17775@candle.pha.pa.us
обсуждение исходный текст
Ответ на Re: quotes in SET grammar  (Thomas Lockhart <thomas@fourpalms.org>)
Список pgsql-hackers
Thomas Lockhart wrote:
> ...
> > I think it would be best to disallow the double-quoted form...
> > However, I'm not sure *how* to disallow it without also disallowing
> > unquoted words (since ultimately the productions reduce to ColId,
> > and the lexer output doesn't distinguish quoted and unquoted
> > identifiers).
> 
> Well, that would be how to distinguish them; we could define a new
> token, say "QIDENT" to refer to quoted identifiers and leave "IDENT" for
> the unquoted ones. Then a little work in gram.y should be enough to
> finish the job.
> 
> The use of IDENT in gram.y is isolated to just a few places so
> introducing QIDENT would be almost trivial afaict.

Well, we allow single-quotes, and we allow no quotes.  People already
know they can quote identifiers and it only affects the case, so should
we explicitly disallow the double-quotes?  I don't see why, I guess. 
We certainly don't want to document the double-quotes though.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026
 


В списке pgsql-hackers по дате отправления:

Предыдущее
От: Bruce Momjian
Дата:
Сообщение: Re: quotes in SET grammar
Следующее
От: Justin Clift
Дата:
Сообщение: Re: PostgreSQL 8.0 ??