diff options
Diffstat (limited to 'src/backend/optimizer/path/pathkeys.c')
| -rw-r--r-- | src/backend/optimizer/path/pathkeys.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/src/backend/optimizer/path/pathkeys.c b/src/backend/optimizer/path/pathkeys.c index 26ccfd9297e..3e4bcffe2e8 100644 --- a/src/backend/optimizer/path/pathkeys.c +++ b/src/backend/optimizer/path/pathkeys.c @@ -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; |