Incorrect column name in Selection shows empty result

[inespo]

When specifying the wrong column name in Selection, result shows empty instead of error message.
It would be a better user experience to show error message: "Can't find Column X" to help debugging.

[kishoreg]

We are planning to enable validation by default when there is schema. The reason we can’t do this today is one can use Pinot in batch only mode without a schema