mirror of https://github.com/citusdata/citus.git
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
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* relation_restriction_equivalence.h
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*
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* This file contains functions helper functions for planning
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* queries with colocated tables and subqueries.
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*
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* Copyright (c) Citus Data, Inc.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef RELATION_RESTRICTION_EQUIVALENCE_H
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#define RELATION_RESTRICTION_EQUIVALENCE_H
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#include "distributed/distributed_planner.h"
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extern bool AllDistributionKeysInQueryAreEqual(Query *originalQuery,
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PlannerRestrictionContext *
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plannerRestrictionContext);
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extern bool SafeToPushdownUnionSubquery(PlannerRestrictionContext *
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plannerRestrictionContext);
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extern bool ContainsUnionSubquery(Query *queryTree);
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extern bool RestrictionEquivalenceForPartitionKeys(PlannerRestrictionContext *
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plannerRestrictionContext);
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bool RestrictionEquivalenceForPartitionKeysViaEquivalences(PlannerRestrictionContext *
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plannerRestrictionContext,
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List *
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allAttributeEquivalenceList);
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extern List * GenerateAllAttributeEquivalences(PlannerRestrictionContext *
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plannerRestrictionContext);
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extern uint32 ReferenceRelationCount(RelationRestrictionContext *restrictionContext);
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extern List * DistributedRelationIdList(Query *query);
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extern PlannerRestrictionContext * FilterPlannerRestrictionForQuery(
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PlannerRestrictionContext *plannerRestrictionContext,
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Query *query);
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extern JoinRestrictionContext * RemoveDuplicateJoinRestrictions(JoinRestrictionContext *
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joinRestrictionContext);
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extern bool EquivalenceListContainsRelationsEquality(List *attributeEquivalenceList,
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RelationRestrictionContext *
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restrictionContext);
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#endif /* RELATION_RESTRICTION_EQUIVALENCE_H */
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