tree 0ca12d4b1729c385ad5eb2525f79dc45a6751033
parent d8f306e0cb6c0dcc43768dd63524ea4fcc76f607
author Yingyi Bu <yingyi@couchbase.com> 1470299553 -0700
committer Yingyi Bu <buyingyi@gmail.com> 1470320910 -0700

Support UNION ALL.

- support heterogenous input types for UNION ALL and the output is resolved to a mimimally generalized type;
- fix the partitioning property inference for UnionAllPOperator;
- fix for ASTERIXDB-1354, a bug in IsomorphismVariableMappingVisitor.

Change-Id: Ifadf1707bb2b6bed22f8fc5792c635e87291a468
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1035
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>