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Original file line number | Diff line number | Diff line change |
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#pragma once | ||
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#include "planner/logical_plan/logical_plan.h" | ||
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namespace kuzu { | ||
namespace planner { | ||
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struct JoinOrderUtil { | ||
// Although we do not flatten join key in Build operator computation. We still need to perform | ||
// cardinality and cost estimation based on their flat cardinality. | ||
static uint64_t getJoinKeysFlatCardinality( | ||
const binder::expression_vector& joinNodeIDs, const LogicalPlan& buildPlan); | ||
}; | ||
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} // namespace planner | ||
} // namespace kuzu |
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#include "planner/join_order/join_order_util.h" | ||
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namespace kuzu { | ||
namespace planner { | ||
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uint64_t JoinOrderUtil::getJoinKeysFlatCardinality( | ||
const binder::expression_vector& joinNodeIDs, const LogicalPlan& buildPlan) { | ||
auto schema = buildPlan.getSchema(); | ||
f_group_pos_set unFlatGroupsPos; | ||
for (auto& joinID : joinNodeIDs) { | ||
auto groupPos = schema->getGroupPos(*joinID); | ||
if (!schema->getGroup(groupPos)->isFlat()) { | ||
unFlatGroupsPos.insert(groupPos); | ||
} | ||
} | ||
auto cardinality = buildPlan.getCardinality(); | ||
for (auto groupPos : unFlatGroupsPos) { | ||
cardinality *= schema->getGroup(groupPos)->getMultiplier(); | ||
} | ||
return cardinality; | ||
} | ||
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} // namespace planner | ||
} // namespace kuzu |
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