Re: BUG #15987: Improve REINDEX of all indexes of a table at once

Поиск
Список
Период
Сортировка
От Fabien COELHO
Тема Re: BUG #15987: Improve REINDEX of all indexes of a table at once
Дата
Msg-id alpine.DEB.2.21.1909011143230.29429@lancre
обсуждение исходный текст
Ответ на Re: BUG #15987: Improve REINDEX of all indexes of a table at once  (Michael Paquier <michael@paquier.xyz>)
Ответы Re: BUG #15987: Improve REINDEX of all indexes of a table at once
Re: BUG #15987: Improve REINDEX of all indexes of a table at once
Список pgsql-bugs

>> one of the indexes. If the same columns occur in more than 1 index you need
>> to read them only once. Then you run 1 and only 1 full table scan (FTS), and
>> with the data of the cursor you add an entry into each of the indexes to
>> rebuild. With just 1 FTS you could create all the indexes at once, and
>> speeding up a full reindex task to use little more than the time the FTS
>> takes.
>
> I don't quite understand your request.  You have REINDEX TABLE which
> is able to reindex all the indexes of a table one by one, […]

I understood the request as the scan should be factored out, so that 
reindexing a table with multiple indexes would cost only one seq scan.

-- 
Fabien.

В списке pgsql-bugs по дате отправления:

Предыдущее
От: Michael Paquier
Дата:
Сообщение: Re: BUG #15987: Improve REINDEX of all indexes of a table at once
Следующее
От: Jo Tzschenscher
Дата:
Сообщение: Re: BUG #15987: Improve REINDEX of all indexes of a table at once