Re: PostgreSQL+Hibernate Performance

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От Kranti K K Parisa™
Тема Re: PostgreSQL+Hibernate Performance
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Msg-id 4478b4ac0808210003x163e3d22u7fda12bd0e0ffeba@mail.gmail.com
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Ответ на Re: PostgreSQL+Hibernate Performance  (Matthew Wakeling <matthew@flymine.org>)
Ответы Re: PostgreSQL+Hibernate Performance  (Mark Lewis <mark.lewis@mir3.com>)
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Thanks Matthew,

does that mean i can just have index1, index3, index4?

On Wed, Aug 20, 2008 at 8:54 PM, Matthew Wakeling <matthew@flymine.org> wrote:
On Wed, 20 Aug 2008, Kranti K K Parisa™ wrote:
creating multiple indexes on same column will effect performance?
 for example:

index1 : column1, column2, column3
index2: column1
index3: column2,
index4: column3
index5: column1,column2

The sole purpose of indexes is to affect performance.

However, if you have index1, there is no point in having index2 or index5.

Matthew

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Kranti Kiran Kumar Parisa
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