Re: Parameter for planner estimate of recursive queries
От | Robert Haas |
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Тема | Re: Parameter for planner estimate of recursive queries |
Дата | |
Msg-id | CA+TgmoaGDw2baysiK+qqL+c3roa-9cPSvJ_Kwdgx7RoPQR0TaA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Parameter for planner estimate of recursive queries (Peter Eisentraut <peter.eisentraut@enterprisedb.com>) |
Ответы |
Re: Parameter for planner estimate of recursive queries
Re: Parameter for planner estimate of recursive queries |
Список | pgsql-hackers |
On Tue, Jan 25, 2022 at 4:44 AM Peter Eisentraut <peter.eisentraut@enterprisedb.com> wrote: > On the one hand, this smells like a planner hint. But on the other > hand, it doesn't look like we will come up with proper graph-aware > selectivity estimation system any time soon, so just having all graph > OLTP queries suck until then because the planner hint is hardcoded > doesn't seem like a better solution. So I think this setting can be ok. I agree. It's a bit lame, but seems pretty harmless, and I can't see us realistically doing a lot better with any reasonable amount of work. -- Robert Haas EDB: http://www.enterprisedb.com
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