greenplumn index_selfuncs 源码
greenplumn index_selfuncs 代码
文件路径：/src/include/utils/index_selfuncs.h
/*-------------------------------------------------------------------------
*
* index_selfuncs.h
* Index cost estimation functions for standard index access methods.
*
*
* Note: this is split out of selfuncs.h mainly to avoid importing all of the
* planner's data structures into the non-planner parts of the index AMs.
* If you make it depend on anything besides access/amapi.h, that's likely
* a mistake.
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/utils/index_selfuncs.h
*
*-------------------------------------------------------------------------
*/
#ifndef INDEX_SELFUNCS_H
#define INDEX_SELFUNCS_H
#include "access/amapi.h"
/* Functions in selfuncs.c */
extern void brincostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void btcostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void hashcostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void gistcostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void spgcostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void gincostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
extern void bmcostestimate(struct PlannerInfo *root,
struct IndexPath *path,
double loop_count,
Cost *indexStartupCost,
Cost *indexTotalCost,
Selectivity *indexSelectivity,
double *indexCorrelation,
double *indexPages);
#endif /* INDEX_SELFUNCS_H */
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