cost_hashjoin

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От Simon Riggs
Тема cost_hashjoin
Дата
Msg-id 1283159934.1800.1845.camel@ebony
обсуждение исходный текст
Ответы Re: cost_hashjoin
Список pgsql-hackers
cost_hashjoin() has some treatment of what occurs when numbatches > 1
but that additional cost is not proportional to numbatches.

The associated comment talks about "an extra time", making it sound like
we think numbatches would only ever be 2 (or 1).

Can someone explain the current code, or is there an oversight there?

-- Simon Riggs           www.2ndQuadrant.comPostgreSQL Development, 24x7 Support, Training and Services



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