Re: postgresql documentation iimprovements
От | Scott Lamb |
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Тема | Re: postgresql documentation iimprovements |
Дата | |
Msg-id | 3E002565.9040309@slamb.org обсуждение исходный текст |
Ответ на | Re: postgresql documentation iimprovements (Gavin Sherry <swm@linuxworld.com.au>) |
Ответы |
Re: postgresql documentation iimprovements
Re: postgresql documentation iimprovements |
Список | pgsql-advocacy |
Gavin Sherry wrote: > On Tue, 17 Dec 2002, Merlin Moncure wrote: >>2. IMHO, The documentation for create rule is not clear and detailed >>enough. PHPfreaks.com has a very nice tutorial about this command and >>how it could be used in a production database. It is very important for >>usage of this command to be clear, because only postgres has it, and > > FWIW Oracle and other databases have rules. This didn't sound right, so I just checked. The Oracle docs do not mention "create rule". Google says Microsoft Transact SQL has a "create rule", but it's not at all the same: a really, really old syntax for check constraints or something. Only still there for backwards compatibility. I think Oracle's triggers just encompass everything PostgreSQL's rules do, but I've never dug into the docs enough to really understand the trigger/rule distinction. And it's late and I'm tired, so <http://www.postgresql.org/idocs/index.php?rules-triggers.html> doesn't make sense to me. Scott
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