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Make use of new list primitives list_append_unique and list_concat_unique

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where applicable.
This commit is contained in:
Tom Lane
2005-07-28 22:27:02 +00:00
parent ef85f5fabc
commit 5d27bf20b4
8 changed files with 44 additions and 65 deletions
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13
src/backend/optimizer/path/pathkeys.c
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@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.70 2005/07/03 18:26:32 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.71 2005/07/28 22:27:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -163,7 +163,7 @@ add_equijoined_keys(PlannerInfo *root, RestrictInfo *restrictinfo)
newset = list_make2(item1, item2);
/* Found a set to merge into our new set */
newset = list_union(newset, curset);
newset = list_concat_unique(newset, curset);
/*
* Remove old set from equi_key_list.
@ -714,8 +714,7 @@ canonicalize_pathkeys(PlannerInfo *root, List *pathkeys)
* canonicalized the keys, so that equivalent-key knowledge is
* used when deciding if an item is redundant.
*/
if (!list_member_ptr(new_pathkeys, cpathkey))
new_pathkeys = lappend(new_pathkeys, cpathkey);
new_pathkeys = list_append_unique_ptr(new_pathkeys, cpathkey);
}
return new_pathkeys;
}
@ -1024,8 +1023,7 @@ build_index_pathkeys(PlannerInfo *root,
* Eliminate redundant ordering info; could happen if query is
* such that index keys are equijoined...
*/
if (!list_member_ptr(retval, cpathkey))
retval = lappend(retval, cpathkey);
retval = list_append_unique_ptr(retval, cpathkey);
indexkeys++;
ordering++;
@ -1467,8 +1465,7 @@ make_pathkeys_for_mergeclauses(PlannerInfo *root,
* pathkey, a simple ptrMember test is sufficient to detect
* redundant keys.
*/
if (!list_member_ptr(pathkeys, pathkey))
pathkeys = lappend(pathkeys, pathkey);
pathkeys = list_append_unique_ptr(pathkeys, pathkey);
}
return pathkeys;