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Tid access method feature from Hiroshi Inoue, Inoue@tpf.co.jp

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This commit is contained in:
Bruce Momjian
1999-11-23 20:07:06 +00:00
parent 54ffd4677a
commit 6f9ff92cc0
28 changed files with 1396 additions and 32 deletions
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75
src/backend/optimizer/plan/createplan.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.76 1999/08/22 23:56:44 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.77 1999/11/23 20:06:57 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -37,6 +37,8 @@ static SeqScan *create_seqscan_node(Path *best_path, List *tlist,
List *scan_clauses);
static IndexScan *create_indexscan_node(IndexPath *best_path, List *tlist,
List *scan_clauses);
static TidScan *create_tidscan_node(TidPath *best_path, List *tlist,
List *scan_clauses);
static NestLoop *create_nestloop_node(NestPath *best_path, List *tlist,
List *clauses, Plan *outer_node, List *outer_tlist,
Plan *inner_node, List *inner_tlist);
@@ -53,6 +55,8 @@ static Node *fix_indxqual_operand(Node *node, IndexPath *index_path,
Form_pg_index index);
static IndexScan *make_indexscan(List *qptlist, List *qpqual, Index scanrelid,
List *indxid, List *indxqual, List *indxqualorig);
static TidScan *make_tidscan(List *qptlist, List *qpqual, Index scanrelid,
List *tideval);
static NestLoop *make_nestloop(List *qptlist, List *qpqual, Plan *lefttree,
Plan *righttree);
static HashJoin *make_hashjoin(List *tlist, List *qpqual,
@@ -101,6 +105,7 @@ create_plan(Path *best_path)
{
case T_IndexScan:
case T_SeqScan:
case T_TidScan:
plan_node = (Plan *) create_scan_node(best_path, tlist);
break;
case T_HashJoin:
@@ -168,6 +173,12 @@ create_scan_node(Path *best_path, List *tlist)
scan_clauses);
break;
case T_TidScan:
node = (Scan *) create_tidscan_node((TidPath *) best_path,
tlist,
scan_clauses);
break;
default:
elog(ERROR, "create_scan_node: unknown node type",
best_path->pathtype);
@@ -399,6 +410,62 @@ create_indexscan_node(IndexPath *best_path,
return scan_node;
}
static TidScan *
make_tidscan(List *qptlist,
List *qpqual,
Index scanrelid,
List *tideval)
{
TidScan *node = makeNode(TidScan);
Plan *plan = &node->scan.plan;
plan->cost = 0;
plan->plan_size = 0;
plan->plan_width = 0;
plan->state = (EState *) NULL;
plan->targetlist = qptlist;
plan->qual = qpqual;
plan->lefttree = NULL;
plan->righttree = NULL;
node->scan.scanrelid = scanrelid;
node->tideval = copyObject(tideval);
node->needRescan = false;
node->scan.scanstate = (CommonScanState *) NULL;
return node;
}
/*
* create_tidscan_node
* Returns a tidscan node for the base relation scanned by 'best_path'
* with restriction clauses 'scan_clauses' and targetlist 'tlist'.
*/
static TidScan *
create_tidscan_node(TidPath *best_path, List *tlist, List *scan_clauses)
{
TidScan *scan_node = (TidScan *) NULL;
Index scan_relid = -1;
List *temp;
temp = best_path->path.parent->relids;
if (temp == NULL)
elog(ERROR, "scanrelid is empty");
else if (length(temp) != 1)
return scan_node;
else
scan_relid = (Index) lfirsti(temp);
scan_node = make_tidscan(tlist,
scan_clauses,
scan_relid,
best_path->tideval);
if (best_path->unjoined_relids)
scan_node->needRescan = true;
scan_node->scan.plan.cost = best_path->path.path_cost;
return scan_node;
}
/*****************************************************************************
*
* JOIN METHODS
@@ -487,6 +554,12 @@ create_nestloop_node(NestPath *best_path,
innerrel);
}
}
else if (IsA(inner_node, TidScan))
{
List *inner_tideval = ((TidScan *) inner_node)->tideval;
TidScan *innerscan = (TidScan *) inner_node;
((TidScan *) inner_node)->tideval = join_references(inner_tideval, outer_tlist, inner_tlist, innerscan->scan.scanrelid);
}
else if (IsA_Join(inner_node))
{
/*