Re: [PATCH 4/4] Add tests to dblink covering use of COPY TO FUNCTION
| От | Pavel Stehule |
|---|---|
| Тема | Re: [PATCH 4/4] Add tests to dblink covering use of COPY TO FUNCTION |
| Дата | |
| Msg-id | 162867790911242231p2141f4acoe0350b9d1ded1b00@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: [PATCH 4/4] Add tests to dblink covering use of COPY TO FUNCTION (Jeff Davis <pgsql@j-davis.com>) |
| Ответы |
Re: [PATCH 4/4] Add tests to dblink covering use of COPY
TO FUNCTION
|
| Список | pgsql-hackers |
2009/11/25 Jeff Davis <pgsql@j-davis.com>: > On Tue, 2009-11-24 at 21:42 -0800, Daniel Farina wrote: >> You are probably right. We could try coercing to bytea and back out >> to bytes, although it seems like a superfluous cost to force >> *everyone* to pay just to get the same bytes to a network buffer. > > Well, I suppose only performance will tell. Copying a buffer is sure to > be faster than invoking all of the type input/output functions, or even > send/recv, so perhaps it's not a huge penalty. > > My disagreement with the row-by-row approach is more semantics than > performance. COPY translates records to bytes and vice-versa, and your > original patch maintains those semantics. uff, really COPY CSV ? Pavel > > Regards, > Jeff Davis > >
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