greenplumn CInnerJoinStatsProcessor 源码
greenplumn CInnerJoinStatsProcessor 代码
文件路径：/src/backend/gporca/libnaucrates/src/statistics/CInnerJoinStatsProcessor.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright 2018 VMware, Inc. or its affiliates.
//
// @filename:
// CInnerJoinStatsProcessor.cpp
//
// @doc:
// Statistics helper routines for processing Inner Joins
//---------------------------------------------------------------------------
#include "naucrates/statistics/CInnerJoinStatsProcessor.h"
using namespace gpmd;
// return statistics object after performing inner join
CStatistics *
CInnerJoinStatsProcessor::CalcInnerJoinStatsStatic(
CMemoryPool *mp, const IStatistics *outer_stats_input,
const IStatistics *inner_stats_input, CStatsPredJoinArray *join_preds_stats)
{
GPOS_ASSERT(nullptr != outer_stats_input);
GPOS_ASSERT(nullptr != inner_stats_input);
GPOS_ASSERT(nullptr != join_preds_stats);
const CStatistics *outer_stats =
dynamic_cast<const CStatistics *>(outer_stats_input);
return CJoinStatsProcessor::SetResultingJoinStats(
mp, outer_stats->GetStatsConfig(), outer_stats_input, inner_stats_input,
join_preds_stats, IStatistics::EsjtInnerJoin,
true /* DoIgnoreLASJHistComputation */
);
}
// EOF
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