Re: COPY (query) TO file
От | Greg Stark |
---|---|
Тема | Re: COPY (query) TO file |
Дата | |
Msg-id | 87r726co9w.fsf@stark.xeocode.com обсуждение исходный текст |
Ответ на | Re: COPY (query) TO file (PFC <lists@peufeu.com>) |
Ответы |
Re: COPY (query) TO file
Re: COPY (query) TO file |
Список | pgsql-hackers |
PFC <lists@peufeu.com> writes: > > I was also vaguely pondering whether all the DDL commands could be > > generalized to receive or send COPY formatted data for repeated execution. > > It would be neat to be able to prepare an UPDATE with placeholders and > > stream data in COPY format as parameters to the UPDATE to execute it > > thousands or millions of times without any protocol overhead or network > > pipeline stalls. > > MySQL already does this for INSERT : > INSERT INTO x (a,b) VALUES (1,2), (3,4), (5,6)...; Does MySQL really let you stream that? Trying to do syntax like that in Postgres wouldn't work because the parser would try to build up a parse tree for the whole statement before running the command. -- greg
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