Class ReplaceStatsFilteredAggWithEval


public class ReplaceStatsFilteredAggWithEval extends OptimizerRules.OptimizerRule<Aggregate>
Replaces an aggregation function having a false/null filter with an EVAL node.
     ... | STATS x = someAgg(y) WHERE FALSE {BY z} | ...
     =>
     ... | STATS x = someAgg(y) {BY z} > | EVAL x = NULL | KEEP x{, z} | ...