Re: [PoC] Reducing planning time when tables have many partitions

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От	Zhang Mingli
Тема	Re: [PoC] Reducing planning time when tables have many partitions
Дата	7 ноября 2022 г. 06:32:59
Msg-id	1fa7e5e2-5ac5-41f3-97df-1bca324e95cb@Spark обсуждение исходный текст
Ответ на	Re: [PoC] Reducing planning time when tables have many partitions (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы	Re: [PoC] Reducing planning time when tables have many partitions
Список	pgsql-hackers

Дерево обсуждения

HI,

Regards,

Zhang Mingli

On Nov 7, 2022, 14:26 +0800, Tom Lane <tgl@sss.pgh.pa.us>, wrote:

Andrey Lepikhov <a.lepikhov@postgrespro.ru> writes:
I'm still in review of your patch now. At most it seems ok, but are you
really need both eq_sources and eq_derives lists now?

Didn't we just have this conversation? eq_sources needs to be kept
separate to support the "broken EC" logic. We don't want to be
regurgitating derived clauses as well as originals in that path.

Aha, we have that conversation in another thread(Reducing duplicativeness of EquivalenceClass-derived clauses
) : https://www.postgresql.org/message-id/644164.1666877342%40sss.pgh.pa.us

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Re: [PoC] Reducing planning time when tables have many partitions