[HACKERS] Turn off transitive joins

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От Gourav Kumar
Тема [HACKERS] Turn off transitive joins
Дата
Msg-id CAPzqDmif8k_ZQ4XR06VfKrKHqtWPwbr96SP8SbAOA_2ecZRQ=A@mail.gmail.com
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Ответы Re: [HACKERS] Turn off transitive joins
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Hi all,

Is there some way by which I can tell postgresql to not to consider transitive joins while considering join pairs.

I.e. Let's say a query has two join predicates one between A & B relations and the other between B and C relations.

While constructing the DP to find the best join order, the Optimizer also consider join between A & C, which can be thought of as a transitive join.

Is their some way to turn this off or tell postgresql to not to consider these type of joins ?

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