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00001 /*------------------------------------------------------------------------- 00002 * 00003 * plancat.h 00004 * prototypes for plancat.c. 00005 * 00006 * 00007 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group 00008 * Portions Copyright (c) 1994, Regents of the University of California 00009 * 00010 * src/include/optimizer/plancat.h 00011 * 00012 *------------------------------------------------------------------------- 00013 */ 00014 #ifndef PLANCAT_H 00015 #define PLANCAT_H 00016 00017 #include "nodes/relation.h" 00018 #include "utils/relcache.h" 00019 00020 /* Hook for plugins to get control in get_relation_info() */ 00021 typedef void (*get_relation_info_hook_type) (PlannerInfo *root, 00022 Oid relationObjectId, 00023 bool inhparent, 00024 RelOptInfo *rel); 00025 extern PGDLLIMPORT get_relation_info_hook_type get_relation_info_hook; 00026 00027 00028 extern void get_relation_info(PlannerInfo *root, Oid relationObjectId, 00029 bool inhparent, RelOptInfo *rel); 00030 00031 extern void estimate_rel_size(Relation rel, int32 *attr_widths, 00032 BlockNumber *pages, double *tuples, double *allvisfrac); 00033 00034 extern int32 get_relation_data_width(Oid relid, int32 *attr_widths); 00035 00036 extern bool relation_excluded_by_constraints(PlannerInfo *root, 00037 RelOptInfo *rel, RangeTblEntry *rte); 00038 00039 extern List *build_physical_tlist(PlannerInfo *root, RelOptInfo *rel); 00040 00041 extern bool has_unique_index(RelOptInfo *rel, AttrNumber attno); 00042 00043 extern Selectivity restriction_selectivity(PlannerInfo *root, 00044 Oid operatorid, 00045 List *args, 00046 Oid inputcollid, 00047 int varRelid); 00048 00049 extern Selectivity join_selectivity(PlannerInfo *root, 00050 Oid operatorid, 00051 List *args, 00052 Oid inputcollid, 00053 JoinType jointype, 00054 SpecialJoinInfo *sjinfo); 00055 00056 #endif /* PLANCAT_H */
1.7.1