Re: "AS" by the syntax of table reference.(8.4 proposal)
От | Gregory Stark |
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Тема | Re: "AS" by the syntax of table reference.(8.4 proposal) |
Дата | |
Msg-id | 874pchlqu0.fsf@oxford.xeocode.com обсуждение исходный текст |
Ответ на | Re: "AS" by the syntax of table reference.(8.4 proposal) (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: "AS" by the syntax of table reference.(8.4 proposal)
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Список | pgsql-hackers |
"Tom Lane" <tgl@sss.pgh.pa.us> writes: > A possibly bigger problem is that the solution for postfix ops doesn't > scale nicely: we'd have to list not only IDENT, but *every* can-be-ColId > keyword, in the %precedence list, which (a) is a maintenance headache, > (b) causes a conflict because some are already listed there with the > wrong precedence for this purpose, and (c) is very scary from the > viewpoint of possibly silently suppressing warnings of future grammar > ambiguities. I'm not even that happy with giving IDENT a precedence; > giving precedences to 270 or so currently precedence-less tokens > just doesn't sound safe. There are other rules that have a %prec on the rule itself, does that not work here? *off to read the fine manual now* -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Get trained by Bruce Momjian - ask me about EnterpriseDB'sPostgreSQL training!
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