Package org.elasticsearch.xpack.esql.optimizer.rules.physical.local

Class PushCountQueryAndTagsToSource

java.lang.Object
org.elasticsearch.xpack.esql.rule.Rule<AggregateExec,PhysicalPlan>
org.elasticsearch.xpack.esql.optimizer.PhysicalOptimizerRules.OptimizerRule<AggregateExec>
org.elasticsearch.xpack.esql.optimizer.rules.physical.local.PushCountQueryAndTagsToSource
public class PushCountQueryAndTagsToSource extends PhysicalOptimizerRules.OptimizerRule<AggregateExec>
Pushes count aggregations on top of query and tags to source. Will transform: 
  Aggregate (count(*) by x)
  └── Eval (x = round_to)
      └── Query [query + tags]
into: 
  Filter (count > 0)
  └── StatsQuery [count with query + tags]
Where the filter is needed since the original Aggregate would not produce buckets with count = 0.