Re: Column oriented pgsql
От | Mag Gam |
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Тема | Re: Column oriented pgsql |
Дата | |
Msg-id | 1cbd6f830905081809s7a46a418g4ce8fea74619b21d@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Column oriented pgsql (Christophe <xof@thebuild.com>) |
Ответы |
Re: Column oriented pgsql
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Список | pgsql-general |
Got it thanks! On Fri, May 8, 2009 at 2:57 PM, Christophe <xof@thebuild.com> wrote: > > On May 8, 2009, at 11:25 AM, John R Pierce wrote: >> >> you read your tables by column, rather than by row?? >> SQL queries are inherently row oriented, the fundamental unit of storage >> is a 'tuple', which is a representation of a row of a table. > > I believe what is referring to is the disk storage organization, clustering > a single column from multiple rows together onto a page. For example, if > your typical use of a table is to read one particular column from a large > number of rows, this could (in theory) improve performance. > > AFAIK, PostgreSQL doesn't support this. > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general >
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