org.apache.spark.sql.execution.OptimizeMetadataOnlyQuery

PartitionedRelation

object PartitionedRelation

A pattern that finds the partitioned table relation node inside the given plan, and returns a pair of the partition attributes and the table relation node.

It keeps traversing down the given plan tree if there is a Project or Filter with deterministic expressions, and returns result after reaching the partitioned table relation node.

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  19. def unapply(plan: LogicalPlan): Option[(AttributeSet, LogicalPlan)]

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