database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

Get rid of hashkeys field of Hash plan node, since it's redundant with

Browse Source 
the hashclauses field of the parent HashJoin.  This avoids problems with
duplicated links to SubPlans in hash clauses, as per report from
Andrew Holm-Hansen.
This commit is contained in:
Tom Lane
2003-11-25 21:00:54 +00:00
parent 38ba28e5c1
commit a64846f3ad
8 changed files with 31 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/optimizer/plan/createplan.c
View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.159 2003/11/12 21:15:53 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.160 2003/11/25 21:00:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -97,7 +97,7 @@ static HashJoin *make_hashjoin(List *tlist,
List *hashclauses,
Plan *lefttree, Plan *righttree,
JoinType jointype);
static Hash *make_hash(List *tlist, List *hashkeys, Plan *lefttree);
static Hash *make_hash(List *tlist, Plan *lefttree);
static MergeJoin *make_mergejoin(List *tlist,
List *joinclauses, List *otherclauses,
List *mergeclauses,
@ -1067,8 +1067,6 @@ create_hashjoin_plan(Query *root,
List *hashclauses;
HashJoin *join_plan;
Hash *hash_plan;
List *innerhashkeys;
List *hcl;
/* Get the join qual clauses (in plain expression form) */
if (IS_OUTER_JOIN(best_path->jpath.jointype))
@ -1102,14 +1100,6 @@ create_hashjoin_plan(Query *root,
otherclauses = order_qual_clauses(root, otherclauses);
hashclauses = order_qual_clauses(root, hashclauses);
/*
* Extract the inner hash keys (right-hand operands of the
* hashclauses) to put in the Hash node.
*/
innerhashkeys = NIL;
foreach(hcl, hashclauses)
innerhashkeys = lappend(innerhashkeys, get_rightop(lfirst(hcl)));
/* We don't want any excess columns in the hashed tuples */
disuse_physical_tlist(inner_plan, best_path->jpath.innerjoinpath);
@ -1117,7 +1107,6 @@ create_hashjoin_plan(Query *root,
* Build the hash node and hash join node.
*/
hash_plan = make_hash(inner_plan->targetlist,
innerhashkeys,
inner_plan);
join_plan = make_hashjoin(tlist,
joinclauses,
@ -1728,7 +1717,7 @@ make_hashjoin(List *tlist,
}
static Hash *
make_hash(List *tlist, List *hashkeys, Plan *lefttree)
make_hash(List *tlist, Plan *lefttree)
{
Hash *node = makeNode(Hash);
Plan *plan = &node->plan;
@ -1744,7 +1733,6 @@ make_hash(List *tlist, List *hashkeys, Plan *lefttree)
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
node->hashkeys = hashkeys;
return node;
}