tree b33de50446c51c592c063309cb23276fe405f766
parent bf98bd66223f135e0577d255ea48b598c8a71e37
author Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1551730585 -0800
committer Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1551821260 -0800

[ASTERIXDB-2521][COMP] Add rule to eliminate isomorphic subplans

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

Details:
- Add optimizer rule that finds two isomorphic subplans
  and eliminates one of them

Change-Id: I1142ea4805e7508a5d0a778081093504cf4f526a
Reviewed-on: https://asterix-gerrit.ics.uci.edu/3238
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ali Alsuliman <ali.al.solaiman@gmail.com>