Lennon Chin
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Lennon Chin
Spark Optimizer's ColumnPruning will replace `count(*)/count(1)` `Aggregate` plan's child to a `Project` node with empty projection list: ```scala object ColumnPruning extends Rule[LogicalPlan] { def apply(plan: LogicalPlan): LogicalPlan = removeProjectBeforeFilter( plan.transformWithPruning(AlwaysProcess.fn,...
module:spark
module:extensions
module:authz