org.apache.spark.sql.execution.SparkStrategies
Returns a placeholder for a physical plan that executes plan
.
Returns a placeholder for a physical plan that executes plan
. This placeholder will be
filled in automatically by the QueryPlanner using the other execution strategies that are
available.
Used to plan aggregation queries that are computed incrementally as part of a StreamingQuery. Currently this rule is injected into the planner on-demand, only when planning in a org.apache.spark.sql.execution.streaming.StreamExecution