mirror of https://github.com/citusdata/citus.git
54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/*-------------------------------------------------------------------------
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* query_pushdown_planning.h
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*
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* Copyright (c) Citus Data, Inc.
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* Function declarations used in query pushdown logic.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef QUERY_PUSHDOWN_PLANNING
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#define QUERY_PUSHDOWN_PLANNING
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#include "postgres.h"
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#include "distributed/distributed_planner.h"
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#include "distributed/errormessage.h"
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#include "distributed/log_utils.h"
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#include "distributed/multi_logical_planner.h"
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#include "distributed/multi_physical_planner.h"
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/* Config variables managed via guc.c */
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extern bool SubqueryPushdown;
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extern int ValuesMaterializationThreshold;
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extern bool CanPushdownSubquery(Query *subqueryTree, bool outerMostQueryHasLimit);
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extern bool ShouldUseSubqueryPushDown(Query *originalQuery, Query *rewrittenQuery,
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PlannerRestrictionContext *plannerRestrictionContext);
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extern bool JoinTreeContainsSubquery(Query *query);
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extern bool IsNodeSubquery(Node *node);
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extern bool HasEmptyJoinTree(Query *query);
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extern bool WhereOrHavingClauseContainsSubquery(Query *query);
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extern bool TargetListContainsSubquery(List *targetList);
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extern bool SafeToPushdownWindowFunction(Query *query, StringInfo *errorDetail);
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extern MultiNode * SubqueryMultiNodeTree(Query *originalQuery,
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Query *queryTree,
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PlannerRestrictionContext *
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plannerRestrictionContext);
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extern DeferredErrorMessage * DeferErrorIfUnsupportedSubqueryPushdown(Query *
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originalQuery,
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PlannerRestrictionContext
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*
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plannerRestrictionContext);
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extern DeferredErrorMessage * DeferErrorIfCannotPushdownSubquery(Query *subqueryTree,
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bool
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outerMostQueryHasLimit);
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extern DeferredErrorMessage * DeferErrorIfUnsupportedUnionQuery(Query *queryTree);
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extern bool IsJsonTableRTE(RangeTblEntry *rte);
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extern bool IsOuterJoinExpr(Node *node);
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#endif /* QUERY_PUSHDOWN_PLANNING_H */
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