mirror of https://github.com/citusdata/citus.git
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* query_colocation_checker.h
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* General Citus planner code.
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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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#ifndef QUERY_COLOCATION_CHECKER_H
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#define QUERY_COLOCATION_CHECKER_H
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#include "distributed/distributed_planner.h"
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#include "nodes/parsenodes.h"
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#include "nodes/primnodes.h"
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/*
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* ColocatedJoinChecker is a helper structure that is used to decide
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* whether any subqueries should be recursively planned due joins non
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* colocated joins.
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*/
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typedef struct ColocatedJoinChecker
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{
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Query *subquery;
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List *anchorAttributeEquivalences;
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List *anchorRelationRestrictionList;
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PlannerRestrictionContext *subqueryPlannerRestriction;
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} ColocatedJoinChecker;
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extern ColocatedJoinChecker CreateColocatedJoinChecker(Query *subquery,
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PlannerRestrictionContext *
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restrictionContext);
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extern bool SubqueryColocated(Query *subquery, ColocatedJoinChecker *context);
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#endif /* QUERY_COLOCATION_CHECKER_H */
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