1 /*-------------------------------------------------------------------------
4 * prototypes for pathnode.c, indexnode.c, relnode.c.
7 * Copyright (c) 1994, Regents of the University of California
9 * $Id: pathnode.h,v 1.1 1996/08/28 07:23:18 scrappy Exp $
11 *-------------------------------------------------------------------------
17 * prototypes for pathnode.c
19 extern bool path_is_cheaper(Path *path1, Path *path2);
20 extern Path *set_cheapest(Rel *parent_rel, List *pathlist);
21 extern List *add_pathlist(Rel *parent_rel, List *unique_paths,
23 extern Path *create_seqscan_path(Rel *rel);
24 extern IndexPath *create_index_path(Query *root, Rel *rel, Rel *index,
25 List *restriction_clauses, bool is_join_scan);
26 extern JoinPath *create_nestloop_path(Rel *joinrel, Rel *outer_rel,
27 Path *outer_path, Path *inner_path, List *keys);
28 extern MergePath *create_mergesort_path(Rel *joinrel, int outersize,
29 int innersize, int outerwidth, int innerwidth, Path *outer_path,
30 Path *inner_path, List *keys, MergeOrder *order,
31 List *mergeclauses, List *outersortkeys, List *innersortkeys);
33 extern HashPath *create_hashjoin_path(Rel *joinrel, int outersize,
34 int innersize, int outerwidth, int innerwidth, Path *outer_path,
35 Path *inner_path, List *keys, Oid operator, List *hashclauses,
36 List *outerkeys, List *innerkeys);
39 * prototypes for rel.c
41 extern Rel *rel_member(List *relid, List *rels);
42 extern Rel *get_base_rel(Query* root, int relid);
43 extern Rel *get_join_rel(Query* root, List *relid);
46 * prototypes for indexnode.h
48 extern List *find_relation_indices(Query *root,Rel *rel);
50 #endif /* PATHNODE_H */