HI,
Regards, Zhang Mingli On Nov 7, 2022, 14:26 +0800, Tom Lane <t...@sss.pgh.pa.us>, wrote: > Andrey Lepikhov <a.lepik...@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
