1 /*-------------------------------------------------------------------------
2  *
3  * plancat.h
4  *	  prototypes for plancat.c.
5  *
6  *
7  * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/optimizer/plancat.h
11  *
12  *-------------------------------------------------------------------------
13  */
14 #ifndef PLANCAT_H
15 #define PLANCAT_H
16 
17 #include "nodes/pathnodes.h"
18 #include "utils/relcache.h"
19 
20 /* Hook for plugins to get control in get_relation_info() */
21 typedef void (*get_relation_info_hook_type) (PlannerInfo *root,
22 											 Oid relationObjectId,
23 											 bool inhparent,
24 											 RelOptInfo *rel);
25 extern PGDLLIMPORT get_relation_info_hook_type get_relation_info_hook;
26 
27 
28 extern void get_relation_info(PlannerInfo *root, Oid relationObjectId,
29 							  bool inhparent, RelOptInfo *rel);
30 
31 extern List *infer_arbiter_indexes(PlannerInfo *root);
32 
33 extern void estimate_rel_size(Relation rel, int32 *attr_widths,
34 							  BlockNumber *pages, double *tuples, double *allvisfrac);
35 
36 extern int32 get_rel_data_width(Relation rel, int32 *attr_widths);
37 extern int32 get_relation_data_width(Oid relid, int32 *attr_widths);
38 
39 extern bool relation_excluded_by_constraints(PlannerInfo *root,
40 											 RelOptInfo *rel, RangeTblEntry *rte);
41 
42 extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
43 
44 extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
45 
46 extern Selectivity restriction_selectivity(PlannerInfo *root,
47 										   Oid operatorid,
48 										   List *args,
49 										   Oid inputcollid,
50 										   int varRelid);
51 
52 extern Selectivity join_selectivity(PlannerInfo *root,
53 									Oid operatorid,
54 									List *args,
55 									Oid inputcollid,
56 									JoinType jointype,
57 									SpecialJoinInfo *sjinfo);
58 
59 extern Selectivity function_selectivity(PlannerInfo *root,
60 										Oid funcid,
61 										List *args,
62 										Oid inputcollid,
63 										bool is_join,
64 										int varRelid,
65 										JoinType jointype,
66 										SpecialJoinInfo *sjinfo);
67 
68 extern void add_function_cost(PlannerInfo *root, Oid funcid, Node *node,
69 							  QualCost *cost);
70 
71 extern double get_function_rows(PlannerInfo *root, Oid funcid, Node *node);
72 
73 extern bool has_row_triggers(PlannerInfo *root, Index rti, CmdType event);
74 
75 extern bool has_stored_generated_columns(PlannerInfo *root, Index rti);
76 
77 #endif							/* PLANCAT_H */
78