Re: [SQL] Re: [HACKERS] Proposed Changes to PostgreSQL
От | Hannu Krosing |
---|---|
Тема | Re: [SQL] Re: [HACKERS] Proposed Changes to PostgreSQL |
Дата | |
Msg-id | 389C2699.B81F5921@tm.ee обсуждение исходный текст |
Ответ на | Re: [SQL] Re: [HACKERS] Proposed Changes to PostgreSQL (Marten Feldtmann <marten@feki.toppoint.de>) |
Список | pgsql-hackers |
Chris wrote: > > Hannu Krosing wrote: > > > I think the operative word here is "available". I know that SQL specs > > are'nt freely available either, but due to SQL being already widely > > supported one can get the general idea from many freely available sources, > > like the bunch of freely downloadable DB's currently available for linux. > > Most of them have some docs included. > > > > It is still quite a job to reconstruct SQL92 from them ;) > > > > I know now description (except a BNF syntax available from some ODBMS website) > > that I could use to get some idea about OQL. > > Poet at http://www.poet.com have their doco online including OQL. > Thanks, I'll check that. Btw, has anyone compared PostgreSQL's object features with SQL3 (draft) features. For example they seem to use UNDER instead of INHERITS and no parentheses. They also have a special privilege also called UNDER for being able to define a subtype (as they call it). A lot of other features seem to be considered too - no wonder it is 2.3 MB text file. available at: ftp://ftp.digital.com/pub/standards/sql/ or http://gatekeeper.dec.com/pub/standards/sql/ the main file is sql-foundation-aug94.txt ------------------------ Hannu
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