| From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
|---|---|
| To: | "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com> |
| Cc: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Manuel Kniep <m(dot)kniep(at)web(dot)de>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>, "fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp" <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> |
| Subject: | Re: foreign table batch inserts |
| Date: | 2016-05-20 07:35:17 |
| Message-ID: | CAMsr+YG=dCNjcbt0RJQGNaobOzg8acTQTEM0w=9xmxd-x5p=GA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 20 May 2016 at 08:47, Tsunakawa, Takayuki <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com
> wrote:
> From: pgsql-hackers-owner(at)postgresql(dot)org [mailto:
> pgsql-hackers-owner(at)postgresql(dot)org] On Behalf Of Craig Ringer
>
> Well, there's FE/BE level batching/pipelining already. Just no access to
> it from libpq.
>
>
>
> Oh, really. The Bind ('B') appears to take one set of parameter values,
> not multiple sets (array). Anyway, I had to say "I want batch update API
> in libpq" to use it in ODBC and ECPG.
>
>
Right, and there's no protocol level support for array-valued batches.
You can, however, omit Sync from between messages and send a series of
protocol messages, like
Parse/Bind/Execute/Bind/Execute/Bind/Execute/Sync
to avoid round-trip overheads.
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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