Re: help interpreting pg_stat_user_index view values
От | Sergey Konoplev |
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Тема | Re: help interpreting pg_stat_user_index view values |
Дата | |
Msg-id | CAL_0b1vW6U3BRf19wJfuj9_KEdoTp1J6wY7WPUV6cmvBdBk-RA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: help interpreting pg_stat_user_index view values (Gavin Flower <GavinFlower@archidevsys.co.nz>) |
Ответы |
Re: help interpreting pg_stat_user_index view values
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Список | pgsql-general |
On Sun, Jan 5, 2014 at 2:19 PM, Gavin Flower <GavinFlower@archidevsys.co.nz> wrote: > On 06/01/14 11:08, Sergey Konoplev wrote: > [...] > >> An index might be considered as useless when there were no idx scans for >> the significantly long period. However it might be non-trivial to define >> this period. Eg. one have a query building an annual report that uses this >> index and the period here is one year. > > [...] > > An index only used by an annual report, should possibly be only created > prior to the report run & dropped immediately afterwards - why carry its > overhead for the bulk of the year? I fully agree. This is the matter of implementation. -- Kind regards, Sergey Konoplev PostgreSQL Consultant and DBA http://www.linkedin.com/in/grayhemp +1 (415) 867-9984, +7 (901) 903-0499, +7 (988) 888-1979 gray.ru@gmail.com
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