Re: query slows down drastically with increased number of fields

Поиск
Список
Период
Сортировка
От Jim C. Nasby
Тема Re: query slows down drastically with increased number of fields
Дата
Msg-id 20061026223650.GS26892@nasby.net
обсуждение исходный текст
Ответ на Re: query slows down drastically with increased number of fields  ("George Pavlov" <gpavlov@mynewplace.com>)
Ответы Re: query slows down drastically with increased number of fields  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-performance
On Thu, Oct 26, 2006 at 03:03:38PM -0700, George Pavlov wrote:
> i have wondered myself. i wouldn't do it through pgAdmin (not sure what
> the best test it, but i thought psql from the same machine might be
> better--see below). anyway, the funny thing is that if you concatenate
> them the time drops:

Sure. Take a look at the output and you'll see there's less data to
shove around.
--
Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)

В списке pgsql-performance по дате отправления:

Предыдущее
От: Andrew Sullivan
Дата:
Сообщение: Re: VACUUMs take twice as long across all nodes
Следующее
От: Tom Lane
Дата:
Сообщение: Re: query slows down drastically with increased number of fields