greenplumn planner 源码
greenplumn planner 代码
文件路径：/src/include/optimizer/planner.h
/*-------------------------------------------------------------------------
*
* planner.h
* prototypes for planner.c.
*
* Note that the primary entry points for planner.c are declared in
* optimizer/optimizer.h, because they're intended to be called from
* non-planner code. Declarations here are meant for use by other
* planner modules.
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/optimizer/planner.h
*
*-------------------------------------------------------------------------
*/
#ifndef PLANNER_H
#define PLANNER_H
#include "nodes/pathnodes.h"
#include "nodes/plannerconfig.h"
#include "nodes/plannodes.h"
/* Hook for plugins to get control in planner() */
typedef PlannedStmt *(*planner_hook_type) (Query *parse,
int cursorOptions,
ParamListInfo boundParams);
extern PGDLLIMPORT planner_hook_type planner_hook;
/* Hook for plugins to get control when grouping_planner() plans upper rels */
typedef void (*create_upper_paths_hook_type) (PlannerInfo *root,
UpperRelationKind stage,
RelOptInfo *input_rel,
RelOptInfo *output_rel,
void *extra);
extern PGDLLIMPORT create_upper_paths_hook_type create_upper_paths_hook;
extern PlannedStmt *standard_planner(Query *parse, int cursorOptions,
ParamListInfo boundParams);
extern PlannerInfo *subquery_planner(PlannerGlobal *glob, Query *parse,
PlannerInfo *parent_root,
bool hasRecursion, double tuple_fraction,
PlannerConfig *config);
extern RowMarkType select_rowmark_type(RangeTblEntry *rte,
LockClauseStrength strength);
extern bool limit_needed(Query *parse);
extern void mark_partial_aggref(Aggref *agg, AggSplit aggsplit);
extern Path *get_cheapest_fractional_path(RelOptInfo *rel,
double tuple_fraction);
extern Expr *preprocess_phv_expression(PlannerInfo *root, Expr *expr);
#endif /* PLANNER_H */
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