Re: [HACKERS] shift/reduce problem with ecpg
От | Michael Meskes |
---|---|
Тема | Re: [HACKERS] shift/reduce problem with ecpg |
Дата | |
Msg-id | 199804211034.MAA11806@gauss.topsystem.de обсуждение исходный текст |
Ответ на | Re: [HACKERS] shift/reduce problem with ecpg ("Thomas G. Lockhart" <lockhart@alumni.caltech.edu>) |
Список | pgsql-hackers |
Thomas G. Lockhart writes: > Yes. If you really want to allow zero, one, or two colons, and only that > number, then you can explicitly define those cases and separate them out > from the a_expr syntax except as an argument. Look in gram.y for > "b_expr" which accomplishes a similar thing for the BETWEEN operator. > For that case, the AND usage was ambiguous since it can be used for > boolean expressions and is also used with the BETWEEN operator. Thanks Thomas. I've created a c_expr to be used in opt_indirection. Since indicators don't make sense in this position only variables may be entered here. Michael -- Dr. Michael Meskes, Project-Manager | topsystem Systemhaus GmbH meskes@topsystem.de | Europark A2, Adenauerstr. 20 meskes@debian.org | 52146 Wuerselen Go SF49ers! Go Rhein Fire! | Tel: (+49) 2405/4670-44 Use Debian GNU/Linux! | Fax: (+49) 2405/4670-10
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