Re: Speed Question

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От Tom Lane
Тема Re: Speed Question
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Msg-id 25958.1040428225@sss.pgh.pa.us
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Ответ на Re: Speed Question  ("scott.marlowe" <scott.marlowe@ihs.com>)
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"scott.marlowe" <scott.marlowe@ihs.com> writes:
> On Fri, 20 Dec 2002, Noah Silverman wrote:
>> Issue #1:  Speed of inserts is relatively slow.  100000 inserts is

> Are you doing these in a transaction?  If not, then try adding a
> begin;end; pair around your inserts.  i.e.

> begin;
> insert 100000 rows
> end;

Or use a COPY command instead of retail inserts.  See also the tips at
http://www.ca.postgresql.org/users-lounge/docs/7.3/postgres/populate.html

> One is you might get some help from a multi-column index.

Yes, I'd recommend a multi-column index when no single column is
particularly selective.

            regards, tom lane

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