Re: Incremental results from libpq
От | Frank van Vugt |
---|---|
Тема | Re: Incremental results from libpq |
Дата | |
Msg-id | 200511101751.55377.ftm.van.vugt@foxi.nl обсуждение исходный текст |
Ответ на | Re: Incremental results from libpq (Scott Lamb <slamb@slamb.org>) |
Ответы |
Re: Incremental results from libpq
Re: Incremental results from libpq |
Список | pgsql-interfaces |
> > The main reason why libpq does what it does is that this way we do not > > have to expose in the API the notion of a command that fails part way > > through. If you support partial result fetching then you'll have to > > deal with the idea that a SELECT could fail after you've already > > returned some rows to the client. I'm wondering, what kind of failure do you have in mind, here? If I'm informed correctly then Oracle and others are generating the complete static result set on the server-side, which will then stay cached until all rows/chunks are fetched. The one failure that comes to mind in this scenario is that the connection breaks down, but since informing the client would then be a bit difficult, you'll certainly be referring to something else ;) If PostgreSQL were to build the complete result-set before handing over the first fetched rows/chunks, then I understand. Is that the case? Or something else even...? -- Best, Frank.
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