Re: Column oriented pgsql
| От | Christophe |
|---|---|
| Тема | Re: Column oriented pgsql |
| Дата | |
| Msg-id | 6D4A3D5E-1E2B-4395-9D84-622DBB356201@thebuild.com обсуждение исходный текст |
| Ответ на | Re: Column oriented pgsql (John R Pierce <pierce@hogranch.com>) |
| Ответы |
Re: Column oriented pgsql
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| Список | pgsql-general |
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.
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