Re: Where can I get the number of plans that considered by Planner?

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От Tom Lane
Тема Re: Where can I get the number of plans that considered by Planner?
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Msg-id 7203.1255356393@sss.pgh.pa.us
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Ответ на Re: Where can I get the number of plans that considered by Planner?  (纪晓曦 <sheepjxx@gmail.com>)
Ответы Re: Where can I get the number of plans that considered by Planner?  (纪晓曦 <sheepjxx@gmail.com>)
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=?UTF-8?B?57qq5pmT5pum?= <sheepjxx@gmail.com> writes:
> Is it a reasonable idea to add a counter to set_cheapest?

You can try it but I think you'll find it's not terribly useful.
That will effectively just give you a count of the number of join
combinations that were considered (plus the number of base relations).

            regards, tom lane

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