//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2018 VMware, Inc. or its affiliates.
//
//	@filename:
//		CProjectStatsProcessor.h
//
//	@doc:
//		Compute statistics for project operation
//---------------------------------------------------------------------------
#ifndef GPNAUCRATES_CProjectStatsProcessor_H
#define GPNAUCRATES_CProjectStatsProcessor_H

#include "gpopt/optimizer/COptimizerConfig.h"
#include "naucrates/statistics/CStatistics.h"

namespace gpnaucrates
{
class CProjectStatsProcessor
{
public:
	// project
	static CStatistics *CalcProjStats(
		CMemoryPool *mp, const CStatistics *input_stats,
		ULongPtrArray *projection_colids, UlongToIDatumMap *datum_map,
		UlongToConstColRefMap *colidToColrefMapForNDVExpr);
};
}  // namespace gpnaucrates

#endif	// !GPNAUCRATES_CProjectStatsProcessor_H

// EOF