Sigh.. At Tue, 09 Apr 2019 10:28:48 +0900 (Tokyo Standard Time), Kyotaro HORIGUCHI <horiguchi.kyot...@lab.ntt.co.jp> wrote in <20190409.102848.252476604.horiguchi.kyot...@lab.ntt.co.jp> > As the second thought. Partition constraint is not constraint > expression so that's fair to apply partqual ignoring > constraint_exclusion. The variable is set false to skip useless > expression evaluation on all partitions, but partqual should be > evaluated just once. Sorry for my confusion. > > So still it is wrong that the new code is added in > gen_partprune_steps_internal.
So still it is wrong that the new code is added at the beginning of the loop on clauses in gen_partprune_steps_internal. > If partqual results true and the > clause is long, the partqual is evaluated uselessly at every > recursion. > > Maybe we should do that when we find that the current clause > doesn't match part attributes. Specifically just after the for > loop "for (i = 0 ; i < part_scheme->partnattrs; i++)". -- Kyotaro Horiguchi NTT Open Source Software Center
