CleanupAliases is a logical analysis rule that transforms a logical query plan with…FIXME
CleanupAliases is part of the Cleanup fixed-point batch in the standard batches of the Analyzer.
CleanupAliases is simply a Catalyst rule for transforming logical plans, i.e. Rule[LogicalPlan].
// FIXME: DEMO
apply(plan: LogicalPlan): LogicalPlan