Same query, same data different plan

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От Kostas Papadopoulos
Тема Same query, same data different plan
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Msg-id 20b3e283-3107-cd18-6e7f-90ed58e7ddf8@methodosit.com.cy
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Ответы Re: Same query, same data different plan  (Daevor The Devoted <dollien@gmail.com>)
Re: Same query, same data different plan  (Imre Samu <pella.samu@gmail.com>)
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I have two identical databases running in the same instance of Postgresql. Ran 
analyze on both. Running the same query I'm getting different plans, one x10 slower. 
Although I have solved my problem by re-writing the query, I want to understand why 
this is happening. If the configuration, Postgresql version, schema and data are the 
same, what other factors is the planner considering?

-- 

Kostas Papadopoulos
KE MethodosIT




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