greenplumn plannerconfig 源码
greenplumn plannerconfig 代码
文件路径：/src/include/nodes/plannerconfig.h
/*
* plannerconfig.h
*
* Created on: May 19, 2011
* Author: siva
*/
#ifndef PLANNERCONFIG_H_
#define PLANNERCONFIG_H_
/**
* Planning configuration information
*/
typedef struct PlannerConfig
{
bool gp_enable_minmax_optimization;
bool gp_enable_multiphase_agg;
bool gp_enable_direct_dispatch;
bool gp_cte_sharing; /* Indicate whether sharing is to be disabled on any CTEs */
bool honor_order_by;
bool is_under_subplan; /* True for plan rooted at a subquery which is planned as a subplan */
bool force_singleQE; /* True for forcing gather the base rel to singleQE, if it needs a motion */
bool may_rescan; /* true means the subquery may be rescanned. */
} PlannerConfig;
extern PlannerConfig *DefaultPlannerConfig(void);
extern PlannerConfig *CopyPlannerConfig(const PlannerConfig *c1);
#endif /* PLANNERCONFIG_H_ */
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