consolidation.add(new ConsolidateSelectsRule());
consolidation.add(new ConsolidateAssignsRule());
consolidation.add(new InlineAssignIntoAggregateRule());
consolidation.add(new IntroduceGroupByCombinerRule());
consolidation.add(new IntroduceAggregateCombinerRule());
consolidation.add(new RemoveUnusedAssignAndAggregateRule());
return consolidation;
}