Re: Should we drop the "object" from ORDBMS?
От | Brendan Jurd |
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Тема | Re: Should we drop the "object" from ORDBMS? |
Дата | |
Msg-id | CADxJZo3oKYr_WBFjtag8ytE2HwF2YpW9QG3xMqaf1fevp9+rsg@mail.gmail.com обсуждение исходный текст |
Ответ на | Should we drop the "object" from ORDBMS? (Jeff Davis <pgsql@j-davis.com>) |
Ответы |
Re: Should we drop the "object" from ORDBMS?
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Список | pgsql-advocacy |
On 26 April 2012 16:02, Jeff Davis <pgsql@j-davis.com> wrote: > As far as I can tell, postgresql has the following object-relational > features: > ... > (3) Dot function call syntax: "select foo.count from foo" -- surprising > to most people, and I don't recall ever seeing it suggested for actual > use. I would go so far as to say we should deprecate this syntax, > because I think it's more likely to be some kind of mistake than > anything else. Sometime in the distant past (can't find it now), I raised the idea of having "methods" registered on a table. If we are to pursue the analogy of a table being like an object class, and a record being like an object instance, well we've got the attributes covered, but we don't have the methods. My pipedream was that these methods could be listed in \d and executed using dot call syntax. So you could define something like "FUNCTION age_years(person, date) RETURNS int" and then call it like: SELECT p.age_years(date '2012-05-01') FROM person p As I recall, my idea did not achieve escape velocity, but I still think it would a) extend the dot-call syntax to a more useful pattern, b) bolster our justification for the "O" in "ORDBMS", and c) actually be kind of awesome. On the broader question, I think you're right that our "O" is a little bit tenuous. But I take that as an incentive to make Postgres more object-y, rather than an incentive to drop the "O". Cheers, BJ
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