Re: Adding nextval() to a select caused hang/very slow execution

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От Tom Lane
Тема Re: Adding nextval() to a select caused hang/very slow execution
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Msg-id 1238445.1604518544@sss.pgh.pa.us
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Ответ на Re: Adding nextval() to a select caused hang/very slow execution  (Eric Raskin <eraskin@paslists.com>)
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... btw, it occurs to me that at least as a stopgap,
"set enable_nestloop = off" would be worth trying.
The killer problem with rowcount-1 estimates is that they
encourage the planner to use nestloops when it shouldn't.

            regards, tom lane

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