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postgres/src/include/optimizer/subselect.h

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/*-------------------------------------------------------------------------
*
* subselect.h
*
*-------------------------------------------------------------------------
*/
#ifndef SUBSELECT_H
#define SUBSELECT_H
#include "nodes/plannodes.h"
extern Index PlannerQueryLevel; /* level of current query */
extern List *PlannerInitPlan; /* init subplans for current query */
extern List *PlannerParamVar; /* to get Var from Param->paramid */
extern int PlannerPlanId; /* to assign unique ID to subquery plans */
extern List *SS_finalize_plan(Plan *plan);
extern Node *SS_replace_correlation_vars(Node *expr);
extern Node *SS_process_sublinks(Node *expr);
#endif /* SUBSELECT_H */