Add a test case for group by alias
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-6553-group-by-alias
Add group by alias functionality for hsql parser
Add more planner tests and Junit tests; Fix the group by multiple columns or expressions with alias problem
Add more guards for weird cases; Add more unit tests and sql coverage tests
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-6553-group-by-alias
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-6553-group-by-alias
Add more tests and resolve Paul's code review comments
add the element at first and remove it when possible; fix the wrong error message
Merge pull request #1713 from VoltDB/ENG-6553-group-by-alias

Eng 6553 group by alias