fun getCardinality(pathId: Long): Long (source)
Returns the cardinality of a given pathId using the StatisticsStore from our kPathIndex.
pathId - The pathId of the path we want the cardinality for.
Return
The cardinality of the given pathId or 1 when non-existent.
fun getCardinality(physicalPlan: PhysicalPlan): Long (source)
Overrides CardinalityEstimation.getCardinality
Returns the cardinality of a given physicalPlan.
This method will recursively calculate the cardinality for its children in order to get the cardinality for the root.
physicalPlan - The root of the tree for which we want to get the cardinality.
Return
The cardinality of the given physicalPlan.