Add parser test cases got KEY/JOIN
MB-9799. Verified that KEY/KEYs can handle any arbitary expressions
Bulk fetch on JOINS with KEYS expression
MB-9570 Complete implementation for JOINS
- Added test cases for JOINs
- support for JOIN TYPES - "INNER", "LEFT", "LEFT OUTER"
Merge pull request #10 from maniktaneja/master

MB-9570 Implementation for JOINs