1 /*-------------------------------------------------------------------------
2  *
3  * plancat.h
4  *	  prototypes for plancat.c.
5  *
6  *
7  * Portions Copyright (c) 1996-2018, 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/relation.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_relation_data_width(Oid relid, int32 *attr_widths);
37 
38 extern bool relation_excluded_by_constraints(PlannerInfo *root,
39 								 RelOptInfo *rel, RangeTblEntry *rte);
40 
41 extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel);
42 
43 extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno);
44 
45 extern Selectivity restriction_selectivity(PlannerInfo *root,
46 						Oid operatorid,
47 						List *args,
48 						Oid inputcollid,
49 						int varRelid);
50 
51 extern Selectivity join_selectivity(PlannerInfo *root,
52 				 Oid operatorid,
53 				 List *args,
54 				 Oid inputcollid,
55 				 JoinType jointype,
56 				 SpecialJoinInfo *sjinfo);
57 
58 extern bool has_row_triggers(PlannerInfo *root, Index rti, CmdType event);
59 
60 #endif							/* PLANCAT_H */
61