This contains the initial implementation of the built-in metrics, specifically for null count. One small caveat is that if you want to generate the same metric for different columns you will need to do multiple executions. We need to implement to unpivot Instruction to add support to multiple columns in a single execution.
closes #17
This contains the initial implementation of the built-in metrics, specifically for null count. One small caveat is that if you want to generate the same metric for different columns you will need to do multiple executions. We need to implement to unpivot Instruction to add support to multiple columns in a single execution.