1 /*-------------------------------------------------------------------------
4 * prototypes for pathnode.c, indexnode.c, relnode.c.
7 * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
8 * Portions Copyright (c) 1994, Regents of the University of California
10 * $Id: pathnode.h,v 1.28 2000/09/12 21:07:11 tgl Exp $
12 *-------------------------------------------------------------------------
17 #include "nodes/relation.h"
20 * prototypes for pathnode.c
22 extern int compare_path_costs(Path *path1, Path *path2,
23 CostSelector criterion);
24 extern int compare_fractional_path_costs(Path *path1, Path *path2,
26 extern void set_cheapest(RelOptInfo *parent_rel);
27 extern void add_path(RelOptInfo *parent_rel, Path *new_path);
29 extern Path *create_seqscan_path(RelOptInfo *rel);
30 extern IndexPath *create_index_path(Query *root, RelOptInfo *rel,
32 List *restriction_clauses,
33 ScanDirection indexscandir);
34 extern TidPath *create_tidscan_path(RelOptInfo *rel, List *tideval);
36 extern NestPath *create_nestloop_path(RelOptInfo *joinrel,
40 List *restrict_clauses,
43 extern MergePath *create_mergejoin_path(RelOptInfo *joinrel,
47 List *restrict_clauses,
53 extern HashPath *create_hashjoin_path(RelOptInfo *joinrel,
57 List *restrict_clauses,
59 Selectivity innerdisbursion);
62 * prototypes for relnode.c
64 extern RelOptInfo *get_base_rel(Query *root, int relid);
65 extern RelOptInfo *get_join_rel(Query *root, RelOptInfo *outer_rel,
66 RelOptInfo *inner_rel,
67 List **restrictlist_ptr);
70 * prototypes for indexnode.h
72 extern List *find_relation_indices(Query *root, RelOptInfo *rel);
74 #endif /* PATHNODE_H */