Introduce Vectorized Evaluation framework #4322
What have you changed? (mandatory)
This PR adds a vectorized evaluation framework, which is able to evaluate expressions column by column. Also this PR provides some dummy functions to show how function signatures can be written in this framework.
This is extracted from #3898.
What are the type of the changes? (mandatory)
How has this PR been tested? (mandatory)
Apr 2, 2019
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