diff options
Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
| -rw-r--r-- | src/backend/optimizer/prep/prepunion.c | 45 |
1 files changed, 2 insertions, 43 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 06f920561a2..a067ed36e69 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -22,7 +22,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.168 2009/03/31 22:12:48 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.169 2009/05/12 00:56:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -32,6 +32,7 @@ #include "access/heapam.h" #include "access/sysattr.h" #include "catalog/namespace.h" +#include "catalog/pg_inherits.h" #include "catalog/pg_type.h" #include "miscadmin.h" #include "nodes/makefuncs.h" @@ -39,7 +40,6 @@ #include "optimizer/cost.h" #include "optimizer/pathnode.h" #include "optimizer/paths.h" -#include "optimizer/plancat.h" #include "optimizer/planmain.h" #include "optimizer/planner.h" #include "optimizer/prep.h" @@ -1082,47 +1082,6 @@ generate_setop_grouplist(SetOperationStmt *op, List *targetlist) /* - * find_all_inheritors - - * Returns a list of relation OIDs including the given rel plus - * all relations that inherit from it, directly or indirectly. - */ -List * -find_all_inheritors(Oid parentrel) -{ - List *rels_list; - ListCell *l; - - /* - * We build a list starting with the given rel and adding all direct and - * indirect children. We can use a single list as both the record of - * already-found rels and the agenda of rels yet to be scanned for more - * children. This is a bit tricky but works because the foreach() macro - * doesn't fetch the next list element until the bottom of the loop. - */ - rels_list = list_make1_oid(parentrel); - - foreach(l, rels_list) - { - Oid currentrel = lfirst_oid(l); - List *currentchildren; - - /* Get the direct children of this rel */ - currentchildren = find_inheritance_children(currentrel); - - /* - * Add to the queue only those children not already seen. This avoids - * making duplicate entries in case of multiple inheritance paths from - * the same parent. (It'll also keep us from getting into an infinite - * loop, though theoretically there can't be any cycles in the - * inheritance graph anyway.) - */ - rels_list = list_concat_unique_oid(rels_list, currentchildren); - } - - return rels_list; -} - -/* * expand_inherited_tables * Expand each rangetable entry that represents an inheritance set * into an "append relation". At the conclusion of this process, |