Re: On columnar storage
От | Tomas Vondra |
---|---|
Тема | Re: On columnar storage |
Дата | |
Msg-id | 557B21DF.3080500@2ndquadrant.com обсуждение исходный текст |
Ответ на | Re: On columnar storage (Merlin Moncure <mmoncure@gmail.com>) |
Список | pgsql-hackers |
Hi, On 06/12/15 15:56, Merlin Moncure wrote: > On Thu, Jun 11, 2015 at 6:03 PM, Alvaro Herrera > <alvherre@2ndquadrant.com> wrote: >> We hope to have a chance to discuss this during the upcoming >> developer unconference in Ottawa. Here are some preliminary ideas >> to shed some light on what we're trying to do. > > Quick thought. We already support out of line columnar storage in a > fashion with 'toast'. Obviously that's a long way from where you want > to go, but have you ruled out extending that system? I doubt it would be a simple extension of TOAST, because it's a bit inverse to the columnar store. TOAST splits a single value into many pieces, but colstore needs to store values from multiple rows together. I wouldn't really call TOAST columnar storage. -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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