Turn on the special null case checking to get correct answer
Fix failed test cases, add tests for null column comparison
Null support in sqlcoverage data generation.
Check point for fix of NULL(AND, OR, NOT, compare) operation
Remove local test file
Fix indexscan case and ee crash for index count case
Merge branch 'ENG-5486-null-lessthan' into ENG-5486-null-lessthan-sqlcoverage
ENG-5486 rework with @Explain support and shortcuts.
Merge remote-tracking branch 'origin/notest-null-coverage' into ENG-5486-paul
More sqlcoverage use of nulls.
ENG-5486 Cleanup and borrowings from Xin's indexscan skipnull work.
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-5486-null-lessthan
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-5486-null-lessthan-sqlcoverage
Fix the problem that make other test failed
Merge branch 'ENG-5486-null-lessthan-sqlcoverage' into ENG-5486-null-lessthan
Fix the conflicts when merging with Paul
member variable name refactor, indexscanexecutor logic change for counting nulls
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-5486-null-lessthan
Merge branch 'notest-null-coverage' into ENG-5486-null-lessthan
Merge remote-tracking branch 'origin/ENG-4819' into ENG-5432