Github user jianqiao commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/174#discussion_r98711958
--- Diff: query_optimizer/PhysicalGenerator.cpp ---
@@ -108,6 +109,7 @@ P::PhysicalPtr PhysicalGenerator::generateInitialPlan(
P::PhysicalPtr PhysicalGenerator::optimizePlan() {
std::vector<std::unique_ptr<Rule<P::Physical>>> rules;
rules.emplace_back(new PruneColumns());
+ rules.emplace_back(new PushDownLowCostDisjunctivePredicate());
--- End diff --
Yes it will only create necessary `Selection`s. I.e. there won't be two
selections in a chain that can be fused into one.
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