51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
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/*-------------------------------------------------------------------------
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*
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* pathnode.h--
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* prototypes for pathnode.c, indexnode.c, relnode.c.
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: pathnode.h,v 1.1.1.1 1996/07/09 06:21:34 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PATHNODE_H
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#define PATHNODE_H
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/*
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* prototypes for pathnode.c
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*/
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extern bool path_is_cheaper(Path *path1, Path *path2);
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extern Path *set_cheapest(Rel *parent_rel, List *pathlist);
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extern List *add_pathlist(Rel *parent_rel, List *unique_paths,
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List *new_paths);
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extern Path *create_seqscan_path(Rel *rel);
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extern IndexPath *create_index_path(Query *root, Rel *rel, Rel *index,
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List *restriction_clauses, bool is_join_scan);
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extern JoinPath *create_nestloop_path(Rel *joinrel, Rel *outer_rel,
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Path *outer_path, Path *inner_path, List *keys);
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extern MergePath *create_mergesort_path(Rel *joinrel, int outersize,
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int innersize, int outerwidth, int innerwidth, Path *outer_path,
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Path *inner_path, List *keys, MergeOrder *order,
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List *mergeclauses, List *outersortkeys, List *innersortkeys);
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extern HashPath *create_hashjoin_path(Rel *joinrel, int outersize,
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int innersize, int outerwidth, int innerwidth, Path *outer_path,
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Path *inner_path, List *keys, Oid operator, List *hashclauses,
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List *outerkeys, List *innerkeys);
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/*
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* prototypes for rel.c
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*/
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extern Rel *rel_member(List *relid, List *rels);
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extern Rel *get_base_rel(Query* root, int relid);
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extern Rel *get_join_rel(Query* root, List *relid);
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/*
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* prototypes for indexnode.h
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*/
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extern List *find_relation_indices(Query *root,Rel *rel);
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#endif /* PATHNODE_H */
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