Re: Insert multiple Rows
От | Christoph Haller |
---|---|
Тема | Re: Insert multiple Rows |
Дата | |
Msg-id | 3E65B76E.D6E118D7@rodos.fzk.de обсуждение исходный текст |
Ответ на | Insert multiple Rows (saintxplo@yahoo.com.ar (Saint X)) |
Список | pgsql-sql |
> > If you use a 'prepared' insert within a transaction, would that speed things > up - maybe by defering index updates? > I doubt it. From: Neil Conway <neilc@samurai.com> ... I'd suspect that for most INSERT queries, the parsing/rewriting/planning stages are relatively inexpensive, and the bulk of the runtime is spent in the executor (and writing WAL records, etc). So my guess would be that you won't see that much of a performance improvement from this... I've noticed a real performance boost using COPY something like ... PQexec("COPY xxx FROM stdin"); for (...) { sprintf(buf, "%d\t%d\t...\n", values[0], values[1], ... values[n]); PQputline(conn, buf); } PQputline(conn, "\\.\n"); PQendcopy(conn); runs like hell. Regards, Christoph
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