greenplumn plancat 源码
greenplumn plancat 代码
文件路径：/src/include/optimizer/plancat.h
/*-------------------------------------------------------------------------
*
* plancat.h
* prototypes for plancat.c.
*
*
* Portions Copyright (c) 2006-2009, Greenplum inc
* Portions Copyright (c) 2012-Present VMware, Inc. or its affiliates.
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/optimizer/plancat.h
*
*-------------------------------------------------------------------------
*/
#ifndef PLANCAT_H
#define PLANCAT_H
#include "nodes/pathnodes.h"
#include "utils/relcache.h"
/* Hook for plugins to get control in get_relation_info() */
typedef void (*get_relation_info_hook_type) (PlannerInfo *root,
Oid relationObjectId,
bool inhparent,
RelOptInfo *rel);
extern PGDLLIMPORT get_relation_info_hook_type get_relation_info_hook;
extern void get_relation_info(PlannerInfo *root, Oid relationObjectId,
bool inhparent, RelOptInfo *rel);
extern List *infer_arbiter_indexes(PlannerInfo *root);
extern void estimate_rel_size(Relation rel, int32 *attr_widths,
BlockNumber *pages, double *tuples, double *allvisfrac);
extern void cdb_estimate_rel_size(RelOptInfo *relOptInfo,
Relation rel,
int32 *attr_widths,
BlockNumber *pages,
double *tuples,
double *allvisfrac);
extern double cdb_estimate_partitioned_numtuples(Relation rel);
extern int32 get_rel_data_width(Relation rel, int32 *attr_widths);
extern int32 get_relation_data_width(Oid relid, int32 *attr_widths);
extern bool relation_excluded_by_constraints(PlannerInfo *root,
RelOptInfo *rel, RangeTblEntry *rte);
extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
extern Selectivity restriction_selectivity(PlannerInfo *root,
Oid operatorid,
List *args,
Oid inputcollid,
int varRelid);
extern Selectivity join_selectivity(PlannerInfo *root,
Oid operatorid,
List *args,
Oid inputcollid,
JoinType jointype,
SpecialJoinInfo *sjinfo);
extern Selectivity function_selectivity(PlannerInfo *root,
Oid funcid,
List *args,
Oid inputcollid,
bool is_join,
int varRelid,
JoinType jointype,
SpecialJoinInfo *sjinfo);
extern void add_function_cost(PlannerInfo *root, Oid funcid, Node *node,
QualCost *cost);
extern double get_function_rows(PlannerInfo *root, Oid funcid, Node *node);
extern bool has_row_triggers(PlannerInfo *root, Index rti, CmdType event);
extern bool has_stored_generated_columns(PlannerInfo *root, Index rti);
#define DEFAULT_EXTERNAL_TABLE_PAGES 1000
#define DEFAULT_EXTERNAL_TABLE_TUPLES 1000000
#define DEFAULT_INTERNAL_TABLE_PAGES 100
#endif /* PLANCAT_H */
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