First set up on Java level to support complex group by for materialized view feature
Add support for materialized view complex group by feature.
Merge branch 'master' into ENG-3613-complex-groupby-mv
Record info to be able to optimize in future
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-3613-complex-groupby-mv
Changes for Paul's quick code review
Add test case for mixed group by columns
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-3613-complex-groupby-mv
Refix for Paul's review
Merge branch 'master' into ENG-3613-complex-groupby-mv
Add tests for memory concerns of complex group by memory
Merge pull request #733 from VoltDB/ENG-3613-complex-groupby-mv

Eng 3613 complex groupby mv