diff options
Diffstat (limited to 'src/backend/optimizer/path/joinutils.c')
| -rw-r--r-- | src/backend/optimizer/path/joinutils.c | 108 |
1 files changed, 54 insertions, 54 deletions
diff --git a/src/backend/optimizer/path/joinutils.c b/src/backend/optimizer/path/joinutils.c index c88d3cf19e8..1e297eee077 100644 --- a/src/backend/optimizer/path/joinutils.c +++ b/src/backend/optimizer/path/joinutils.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/joinutils.c,v 1.2 1997/09/07 04:43:42 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/Attic/joinutils.c,v 1.3 1997/09/08 02:24:23 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -32,11 +32,11 @@ match_pathkey_joinkeys(List * pathkey, List * joinkeys, static bool every_func(List * joinkeys, List * pathkey, int which_subkey); -static List * +static List * new_join_pathkey(List * subkeys, List * considered_subkeys, List * join_rel_tlist, List * joinclauses); -static List * +static List * new_matching_subkeys(Var * subkey, List * considered_subkeys, List * join_rel_tlist, List * joinclauses); @@ -73,18 +73,18 @@ new_matching_subkeys(Var * subkey, List * considered_subkeys, * Returns a list of matched join keys and a list of matched join clauses * in matchedJoinClausesPtr. - ay 11/94 */ -List * +List * match_pathkeys_joinkeys(List * pathkeys, List * joinkeys, List * joinclauses, int which_subkey, List ** matchedJoinClausesPtr) { - List *matched_joinkeys = NIL; - List *matched_joinclauses = NIL; - List *pathkey = NIL; - List *i = NIL; - int matched_joinkey_index = -1; + List *matched_joinkeys = NIL; + List *matched_joinclauses = NIL; + List *pathkey = NIL; + List *i = NIL; + int matched_joinkey_index = -1; foreach(i, pathkeys) { @@ -94,8 +94,8 @@ match_pathkeys_joinkeys(List * pathkeys, if (matched_joinkey_index != -1) { - List *xjoinkey = nth(matched_joinkey_index, joinkeys); - List *joinclause = nth(matched_joinkey_index, joinclauses); + List *xjoinkey = nth(matched_joinkey_index, joinkeys); + List *joinclause = nth(matched_joinkey_index, joinclauses); /* XXX was "push" function */ matched_joinkeys = lappend(matched_joinkeys, xjoinkey); @@ -131,11 +131,11 @@ match_pathkey_joinkeys(List * pathkey, List * joinkeys, int which_subkey) { - Var *path_subkey; - int pos; - List *i = NIL; - List *x = NIL; - JoinKey *jk; + Var *path_subkey; + int pos; + List *i = NIL; + List *x = NIL; + JoinKey *jk; foreach(i, pathkey) { @@ -174,15 +174,15 @@ match_pathkey_joinkeys(List * pathkey, * * Returns the matching path node if one exists, nil otherwise. */ -static bool +static bool every_func(List * joinkeys, List * pathkey, int which_subkey) { - JoinKey *xjoinkey; - Var *temp; - Var *tempkey = NULL; - bool found = false; - List *i = NIL; - List *j = NIL; + JoinKey *xjoinkey; + Var *temp; + Var *tempkey = NULL; + bool found = false; + List *i = NIL; + List *j = NIL; foreach(i, joinkeys) { @@ -211,19 +211,19 @@ every_func(List * joinkeys, List * pathkey, int which_subkey) * match_paths_joinkeys - * find the cheapest path that matches the join keys */ -Path * +Path * match_paths_joinkeys(List * joinkeys, PathOrder * ordering, List * paths, int which_subkey) { - Path *matched_path = NULL; - bool key_match = false; - List *i = NIL; + Path *matched_path = NULL; + bool key_match = false; + List *i = NIL; foreach(i, paths) { - Path *path = (Path *) lfirst(i); + Path *path = (Path *) lfirst(i); key_match = every_func(joinkeys, path->keys, which_subkey); @@ -263,20 +263,20 @@ match_paths_joinkeys(List * joinkeys, * Returns a list of pathkeys: ((tlvar1)(tlvar2)...(tlvarN)). * [I've no idea why they have to be list of lists. Should be fixed. -ay 12/94] */ -List * +List * extract_path_keys(List * joinkeys, List * tlist, int which_subkey) { - List *pathkeys = NIL; - List *jk; + List *pathkeys = NIL; + List *jk; foreach(jk, joinkeys) { - JoinKey *jkey = (JoinKey *) lfirst(jk); - Var *var, - *key; - List *p; + JoinKey *jkey = (JoinKey *) lfirst(jk); + Var *var, + *key; + List *p; /* * find the right Var in the target list for this key @@ -289,7 +289,7 @@ extract_path_keys(List * joinkeys, */ foreach(p, pathkeys) { - Var *pkey = lfirst((List *) lfirst(p)); /* XXX fix me */ + Var *pkey = lfirst((List *) lfirst(p)); /* XXX fix me */ if (key == pkey) break; @@ -325,15 +325,15 @@ extract_path_keys(List * joinkeys, * Returns the list of new path keys. * */ -List * +List * new_join_pathkeys(List * outer_pathkeys, List * join_rel_tlist, List * joinclauses) { - List *outer_pathkey = NIL; - List *t_list = NIL; - List *x; - List *i = NIL; + List *outer_pathkey = NIL; + List *t_list = NIL; + List *x; + List *i = NIL; foreach(i, outer_pathkeys) { @@ -365,18 +365,18 @@ new_join_pathkeys(List * outer_pathkeys, * Returns a new pathkey(list of subkeys). * */ -static List * +static List * new_join_pathkey(List * subkeys, List * considered_subkeys, List * join_rel_tlist, List * joinclauses) { - List *t_list = NIL; - Var *subkey; - List *i = NIL; - List *matched_subkeys = NIL; - Expr *tlist_key = (Expr *) NULL; - List *newly_considered_subkeys = NIL; + List *t_list = NIL; + Var *subkey; + List *i = NIL; + List *matched_subkeys = NIL; + Expr *tlist_key = (Expr *) NULL; + List *newly_considered_subkeys = NIL; foreach(i, subkeys) { @@ -425,17 +425,17 @@ new_join_pathkey(List * subkeys, * Returns a list of new subkeys. * */ -static List * +static List * new_matching_subkeys(Var * subkey, List * considered_subkeys, List * join_rel_tlist, List * joinclauses) { - Expr *joinclause = NULL; - List *t_list = NIL; - List *temp = NIL; - List *i = NIL; - Expr *tlist_other_var = (Expr *) NULL; + Expr *joinclause = NULL; + List *t_list = NIL; + List *temp = NIL; + List *i = NIL; + Expr *tlist_other_var = (Expr *) NULL; foreach(i, joinclauses) { |