1996-07-09 08:22:35 +02:00
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/*-------------------------------------------------------------------------
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*
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* paths.h--
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1997-09-07 07:04:48 +02:00
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* prototypes for various files in optimizer/paths (were separate
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* header files
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1996-07-09 08:22:35 +02:00
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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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1997-09-08 04:41:22 +02:00
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* $Id: paths.h,v 1.3 1997/09/08 02:37:53 momjian Exp $
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1996-07-09 08:22:35 +02:00
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*
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*-------------------------------------------------------------------------
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*/
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1997-09-07 07:04:48 +02:00
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#ifndef PATHS_H
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#define PATHS_H
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1996-07-09 08:22:35 +02:00
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/*
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* allpaths.h
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*/
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1997-09-08 04:41:22 +02:00
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extern List *find_paths(Query * root, List * rels);
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1996-07-09 08:22:35 +02:00
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/*
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* indxpath.h
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1997-09-07 07:04:48 +02:00
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* routines to generate index paths
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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find_index_paths(Query * root, Rel * rel, List * indices,
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List * clauseinfo_list,
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List * joininfo_list);
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1996-07-09 08:22:35 +02:00
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/*
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* joinpath.h
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1997-09-07 07:04:48 +02:00
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* routines to create join paths
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern void find_all_join_paths(Query * root, List * joinrels);
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1997-09-07 07:04:48 +02:00
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1996-07-09 08:22:35 +02:00
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/*
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* orindxpath.h
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*/
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1997-09-08 04:41:22 +02:00
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extern List *create_or_index_paths(Query * root, Rel * rel, List * clauses);
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1996-07-09 08:22:35 +02:00
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/*
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* hashutils.h
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1997-09-07 07:04:48 +02:00
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* routines to deal with hash keys and clauses
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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group_clauses_by_hashop(List * clauseinfo_list,
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int inner_relid);
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1996-07-09 08:22:35 +02:00
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/*
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* joinutils.h
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1997-09-07 07:04:48 +02:00
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* generic join method key/clause routines
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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match_pathkeys_joinkeys(List * pathkeys,
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List * joinkeys, List * joinclauses, int which_subkey,
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List ** matchedJoinClausesPtr);
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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extract_path_keys(List * joinkeys, List * tlist,
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int which_subkey);
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1997-09-08 04:41:22 +02:00
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extern Path *
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1997-09-07 07:04:48 +02:00
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match_paths_joinkeys(List * joinkeys, PathOrder * ordering,
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List * paths, int which_subkey);
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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new_join_pathkeys(List * outer_pathkeys,
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List * join_rel_tlist, List * joinclauses);
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1996-07-09 08:22:35 +02:00
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/*
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* mergeutils.h
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1997-09-07 07:04:48 +02:00
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* routines to deal with merge keys and clauses
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern List *
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1997-09-07 07:04:48 +02:00
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group_clauses_by_order(List * clauseinfo_list,
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int inner_relid);
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1997-09-08 04:41:22 +02:00
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extern MInfo *
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1997-09-07 07:04:48 +02:00
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match_order_mergeinfo(PathOrder * ordering,
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List * mergeinfo_list);
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1996-07-09 08:22:35 +02:00
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/*
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* joinrels.h
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1997-09-07 07:04:48 +02:00
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* routines to determine which relations to join
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1996-07-09 08:22:35 +02:00
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*/
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1997-09-08 04:41:22 +02:00
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extern List *find_join_rels(Query * root, List * outer_rels);
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extern void add_new_joininfos(Query * root, List * joinrels, List * outerrels);
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extern List *final_join_rels(List * join_rel_list);
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1996-07-09 08:22:35 +02:00
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/*
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* prototypes for path/prune.c
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*/
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1997-09-08 04:41:22 +02:00
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extern List *prune_joinrels(List * rel_list);
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extern void prune_rel_paths(List * rel_list);
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extern Path *prune_rel_path(Rel * rel, Path * unorderedpath);
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extern List *merge_joinrels(List * rel_list1, List * rel_list2);
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extern List *prune_oldrels(List * old_rels);
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1996-07-09 08:22:35 +02:00
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1997-09-07 07:04:48 +02:00
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#endif /* PATHS_H */
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