Select Operator

[srora]

Select operator takes in arrow's table as an input and produces a filtered arrow table as an output. It should be able to support multiple predicates connected through ands and ors. The predicates could be on fields of different data types. Gandiva's expression tree evaluation should be used.

• Use Gandiva to write a select operator with one clause of int32 type
• Support multiple clauses
• Support clauses of different data types