View not using index
От | Yves Vindevogel |
---|---|
Тема | View not using index |
Дата | |
Msg-id | 9e1745a6fe1ae29c6f1c824128871d36@implements.be обсуждение исходный текст |
Ответы |
Re: View not using index
|
Список | pgsql-performance |
Hi, I have a view that has something like this: select x, y, z from tbl order by x, y I have created a special index on x + y I have run analyze Still, when I use explain, pg says it will first sort my tables instead of using my index How is that possible ? When I do explain select x,y,z from tbl order by x, y, it works like I want it to work Met vriendelijke groeten, Bien à vous, Kind regards, <bold>Yves Vindevogel</bold> <bold>Implements</bold> <smaller> </smaller>Hi, I have a view that has something like this: select x, y, z from tbl order by x, y I have created a special index on x + y I have run analyze Still, when I use explain, pg says it will first sort my tables instead of using my index How is that possible ? When I do explain select x,y,z from tbl order by x, y, it works like I want it to work Met vriendelijke groeten, Bien à vous, Kind regards, Yves Vindevogel Implements <smaller> Mail: yves.vindevogel@implements.be - Mobile: +32 (478) 80 82 91 Kempische Steenweg 206 - 3500 Hasselt - Tel-Fax: +32 (11) 43 55 76 Web: http://www.implements.be <italic><x-tad-smaller> First they ignore you. Then they laugh at you. Then they fight you. Then you win. Mahatma Ghandi.</x-tad-smaller></italic></smaller> Mail: yves.vindevogel@implements.be - Mobile: +32 (478) 80 82 91 Kempische Steenweg 206 - 3500 Hasselt - Tel-Fax: +32 (11) 43 55 76 Web: http://www.implements.be First they ignore you. Then they laugh at you. Then they fight you. Then you win. Mahatma Ghandi.
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