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Support for subselects.

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ExecReScan for nodeAgg, nodeHash, nodeHashjoin, nodeNestloop and nodeResult.
Fixed ExecReScan for nodeMaterial.
Get rid of #ifdef INDEXSCAN_PATCH.
Get rid of ExecMarkPos and ExecRestrPos in nodeNestloop.
This commit is contained in:
Vadim B. Mikheev
1998-02-13 03:26:53 +00:00
parent 13637df458
commit 1a105cefbd
15 changed files with 677 additions and 153 deletions
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90
src/backend/executor/execAmi.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execAmi.c,v 1.16 1998/01/16 23:19:47 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execAmi.c,v 1.17 1998/02/13 03:26:36 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -37,6 +37,13 @@
#include "executor/nodeIndexscan.h"
#include "executor/nodeSort.h"
#include "executor/nodeTee.h"
#include "executor/nodeMaterial.h"
#include "executor/nodeNestloop.h"
#include "executor/nodeHashjoin.h"
#include "executor/nodeHash.h"
#include "executor/nodeAgg.h"
#include "executor/nodeResult.h"
#include "executor/nodeSubplan.h"
#include "executor/execdebug.h"
#include "optimizer/internal.h" /* for _TEMP_RELATION_ID_ */
#include "access/genam.h"
@@ -287,35 +294,82 @@ ExecCloseR(Plan *node)
void
ExecReScan(Plan *node, ExprContext *exprCtxt, Plan *parent)
{
if ( node->chgParam != NULL ) /* Wow! */
{
List *lst;
foreach (lst, node->initPlan)
{
Plan *splan = ((SubPlan*) lfirst (lst))->plan;
if ( splan->extParam != NULL ) /* don't care about child locParam */
SetChangedParamList (splan, node->chgParam);
if ( splan->chgParam != NULL )
ExecReScanSetParamPlan ((SubPlan*) lfirst (lst), node);
}
foreach (lst, node->subPlan)
{
Plan *splan = ((SubPlan*) lfirst (lst))->plan;
if ( splan->extParam != NULL )
SetChangedParamList (splan, node->chgParam);
}
/* Well. Now set chgParam for left/right trees. */
if ( node->lefttree != NULL )
SetChangedParamList (node->lefttree, node->chgParam);
if ( node->righttree != NULL )
SetChangedParamList (node->righttree, node->chgParam);
}
switch (nodeTag(node))
{
case T_SeqScan:
case T_SeqScan:
ExecSeqReScan((SeqScan *) node, exprCtxt, parent);
return;
break;
case T_IndexScan:
ExecIndexReScan((IndexScan *) node, exprCtxt, parent);
return;
break;
case T_Material:
ExecMaterialReScan((Material*) node, exprCtxt, parent);
break;
/*
* the first call to ExecReScan should have no effect because
* everything is initialized properly already. the following
* calls will be handled by ExecSeqReScan() because the nodes
* below the Material node have already been materialized into
* a temp relation.
*/
return;
case T_NestLoop:
ExecReScanNestLoop((NestLoop*) node, exprCtxt, parent);
break;
case T_HashJoin:
ExecReScanHashJoin((HashJoin*) node, exprCtxt, parent);
break;
case T_Hash:
ExecReScanHash((Hash*) node, exprCtxt, parent);
break;
case T_Agg:
ExecReScanAgg((Agg*) node, exprCtxt, parent);
break;
case T_Result:
ExecReScanResult((Result*) node, exprCtxt, parent);
break;
/*
* Tee is never used
case T_Tee:
ExecTeeReScan((Tee *) node, exprCtxt, parent);
break;
*/
default:
elog(ERROR, "ExecReScan: not a seqscan or indexscan node.");
elog(ERROR, "ExecReScan: node type %u not supported", nodeTag(node));
return;
}
if ( node->chgParam != NULL )
{
freeList (node->chgParam);
node->chgParam = NULL;
}
}
/* ----------------------------------------------------------------
@@ -352,7 +406,7 @@ ExecMarkPos(Plan *node)
{
switch (nodeTag(node))
{
case T_SeqScan:
case T_SeqScan:
ExecSeqMarkPos((SeqScan *) node);
break;
@@ -365,7 +419,7 @@ ExecMarkPos(Plan *node)
break;
default:
/* elog(DEBUG, "ExecMarkPos: unsupported node type"); */
elog(DEBUG, "ExecMarkPos: node type %u not supported", nodeTag(node));
break;
}
return;
@@ -382,7 +436,7 @@ ExecRestrPos(Plan *node)
{
switch (nodeTag(node))
{
case T_SeqScan:
case T_SeqScan:
ExecSeqRestrPos((SeqScan *) node);
return;
@@ -395,7 +449,7 @@ ExecRestrPos(Plan *node)
return;
default:
/* elog(DEBUG, "ExecRestrPos: node type not supported"); */
elog(DEBUG, "ExecRestrPos: node type %u not supported", nodeTag(node));
return;
}
}