Re: COPY ... FROM and index usage
От | Reg Me Please |
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Тема | Re: COPY ... FROM and index usage |
Дата | |
Msg-id | 200711041615.33405.regmeplease@gmail.com обсуждение исходный текст |
Ответ на | Re: COPY ... FROM and index usage ("Josh Tolley" <eggyknap@gmail.com>) |
Ответы |
Re: COPY ... FROM and index usage
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Список | pgsql-general |
Il Sunday 04 November 2007 14:59:10 Josh Tolley ha scritto: > On 11/4/07, Reg Me Please <regmeplease@gmail.com> wrote: > > Hi all. > > > > I'd like to know whether the indexes on a table are updated or not during > > a "COPY ... FROM" request. > > > > That is, should I drop all indexes during a "COPY ... FROM" in order to > > gain the maximum speed to load data? > > > > Thanks. > > Although questions of "which is faster" often depend very heavily on > the data involved, the database schema, the hardware, etc., typically > people find it best to drop all indexes during a large import and > recreate them afterward. > > - Josh/eggyknap This sounds very reasonable to me. But the first question remains unanswered: Are the indexes updated during the COPY ... FROM ? Thanks again. -- Reg me Please
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