tree 1fb4fab1d76334d61dccc6350dfdfe4f588924e7
parent b7d6ddccf8477c74913b1b52b2536e0dd8975dcf
author Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1610596811 -0800
committer Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1610649258 +0000

[NO ISSUE][COMP] Push subplans into subplans

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Enhance PushSubplanIntoGroupByRule to push subplans into subplans
- Add `compiler.subplan.merge` and  `compiler.subplan.nestedpushdown`
  options to control subplan pushdown performed by this rule
- Fix and optimize SubstituteVariableVisitor. Visit missing
  expressions in some operators. Stop substitution in an operator
  as soon as its produced variable is found
- EliminateSubplanWithInputCardinalityOneRule should check that
  subplan's input operator cardinality is exactly one
- Cleanup CardinalityInferenceVisitor

Change-Id: I70466fe35d24d1c4f3f70887afaff7b0fced8fad
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/9544
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ali Alsuliman <ali.al.solaiman@gmail.com>