-<!-- $PostgreSQL: pgsql/doc/src/sgml/indexam.sgml,v 2.21 2007/01/31 20:56:17 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/indexam.sgml,v 2.22 2007/02/22 22:00:22 tgl Exp $ -->
<chapter id="indexam">
<title>Index Access Method Interface Definition</title>
* Also, we charge for evaluation of the indexquals at each index row.
* All the costs are assumed to be paid incrementally during the scan.
*/
- cost_qual_eval(&index_qual_cost, indexQuals);
+ cost_qual_eval(&index_qual_cost, indexQuals, root);
*indexStartupCost = index_qual_cost.startup;
*indexTotalCost = seq_page_cost * numIndexPages +
(cpu_index_tuple_cost + index_qual_cost.per_tuple) * numIndexTuples;
* Portions Copyright (c) 1994-5, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.156 2007/02/20 17:32:14 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.157 2007/02/22 22:00:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
bool printNodes; /* do nodeToString() too */
bool printAnalyze; /* print actual times */
/* other states */
+ PlannedStmt *pstmt; /* top of plan */
List *rtable; /* range table */
} ExplainState;
es->printNodes = stmt->verbose;
es->printAnalyze = stmt->analyze;
+ es->pstmt = queryDesc->plannedstmt;
es->rtable = queryDesc->plannedstmt->rtable;
if (es->printNodes)
/* initPlan-s */
if (plan->initPlan)
{
- List *saved_rtable = es->rtable;
ListCell *lst;
for (i = 0; i < indent; i++)
SubPlanState *sps = (SubPlanState *) lfirst(lst);
SubPlan *sp = (SubPlan *) sps->xprstate.expr;
- es->rtable = sp->rtable;
for (i = 0; i < indent; i++)
appendStringInfo(str, " ");
appendStringInfo(str, " -> ");
- explain_outNode(str, sp->plan,
+ explain_outNode(str,
+ exec_subplan_get_plan(es->pstmt, sp),
sps->planstate,
NULL,
indent + 4, es);
}
- es->rtable = saved_rtable;
}
/* lefttree */
SubqueryScan *subqueryscan = (SubqueryScan *) plan;
SubqueryScanState *subquerystate = (SubqueryScanState *) planstate;
Plan *subnode = subqueryscan->subplan;
- RangeTblEntry *rte = rt_fetch(subqueryscan->scan.scanrelid,
- es->rtable);
- List *saved_rtable = es->rtable;
-
- Assert(rte->rtekind == RTE_SUBQUERY);
- es->rtable = rte->subquery->rtable;
for (i = 0; i < indent; i++)
appendStringInfo(str, " ");
subquerystate->subplan,
NULL,
indent + 3, es);
-
- es->rtable = saved_rtable;
}
/* subPlan-s */
if (planstate->subPlan)
{
- List *saved_rtable = es->rtable;
ListCell *lst;
for (i = 0; i < indent; i++)
SubPlanState *sps = (SubPlanState *) lfirst(lst);
SubPlan *sp = (SubPlan *) sps->xprstate.expr;
- es->rtable = sp->rtable;
for (i = 0; i < indent; i++)
appendStringInfo(str, " ");
appendStringInfo(str, " -> ");
- explain_outNode(str, sp->plan,
+ explain_outNode(str,
+ exec_subplan_get_plan(es->pstmt, sp),
sps->planstate,
NULL,
indent + 4, es);
}
- es->rtable = saved_rtable;
}
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.287 2007/02/20 17:32:14 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.288 2007/02/22 22:00:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
DestReceiver *dest);
static TupleTableSlot *EvalPlanQualNext(EState *estate);
static void EndEvalPlanQual(EState *estate);
+static void ExecCheckRTPerms(List *rangeTable);
static void ExecCheckRTEPerms(RangeTblEntry *rte);
static void ExecCheckXactReadOnly(PlannedStmt *plannedstmt);
-static void ExecCheckRangeTblReadOnly(List *rtable);
static void EvalPlanQualStart(evalPlanQual *epq, EState *estate,
evalPlanQual *priorepq);
static void EvalPlanQualStop(evalPlanQual *epq);
* ExecCheckRTPerms
* Check access permissions for all relations listed in a range table.
*/
-void
+static void
ExecCheckRTPerms(List *rangeTable)
{
ListCell *l;
foreach(l, rangeTable)
{
- RangeTblEntry *rte = lfirst(l);
-
- ExecCheckRTEPerms(rte);
+ ExecCheckRTEPerms((RangeTblEntry *) lfirst(l));
}
}
Oid userid;
/*
- * Only plain-relation RTEs need to be checked here. Subquery RTEs are
- * checked by ExecInitSubqueryScan if the subquery is still a separate
- * subquery --- if it's been pulled up into our query level then the RTEs
- * are in our rangetable and will be checked here. Function RTEs are
+ * Only plain-relation RTEs need to be checked here. Function RTEs are
* checked by init_fcache when the function is prepared for execution.
- * Join and special RTEs need no checks.
+ * Join, subquery, and special RTEs need no checks.
*/
if (rte->rtekind != RTE_RELATION)
return;
static void
ExecCheckXactReadOnly(PlannedStmt *plannedstmt)
{
+ ListCell *l;
+
/*
* CREATE TABLE AS or SELECT INTO?
*
goto fail;
/* Fail if write permissions are requested on any non-temp table */
- ExecCheckRangeTblReadOnly(plannedstmt->rtable);
-
- return;
-
-fail:
- ereport(ERROR,
- (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
- errmsg("transaction is read-only")));
-}
-
-static void
-ExecCheckRangeTblReadOnly(List *rtable)
-{
- ListCell *l;
-
- /* Fail if write permissions are requested on any non-temp table */
- foreach(l, rtable)
+ foreach(l, plannedstmt->rtable)
{
- RangeTblEntry *rte = lfirst(l);
-
- if (rte->rtekind == RTE_SUBQUERY)
- {
- Assert(!rte->subquery->into);
- ExecCheckRangeTblReadOnly(rte->subquery->rtable);
- continue;
- }
+ RangeTblEntry *rte = (RangeTblEntry *) lfirst(l);
if (rte->rtekind != RTE_RELATION)
continue;
ListCell *l;
/*
- * Do permissions checks. It's sufficient to examine the query's top
- * rangetable here --- subplan RTEs will be checked during
- * ExecInitSubPlan().
+ * Do permissions checks
*/
ExecCheckRTPerms(rangeTable);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/execUtils.c,v 1.145 2007/02/20 17:32:14 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/execUtils.c,v 1.146 2007/02/22 22:00:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
Relation
ExecOpenScanRelation(EState *estate, Index scanrelid)
{
- RangeTblEntry *rtentry;
Oid reloid;
LOCKMODE lockmode;
ResultRelInfo *resultRelInfos;
}
/* OK, open the relation and acquire lock as needed */
- rtentry = rt_fetch(scanrelid, estate->es_range_table);
- reloid = rtentry->relid;
+ reloid = getrelid(scanrelid, estate->es_range_table);
return heap_open(reloid, lockmode);
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/nodeFunctionscan.c,v 1.43 2007/02/19 02:23:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/nodeFunctionscan.c,v 1.44 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "executor/nodeFunctionscan.h"
#include "funcapi.h"
-#include "parser/parsetree.h"
#include "utils/builtins.h"
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/nodeSubplan.c,v 1.85 2007/02/06 02:59:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/nodeSubplan.c,v 1.86 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
ExecInitSubPlan(SubPlanState *node, EState *estate, int eflags)
{
SubPlan *subplan = (SubPlan *) node->xprstate.expr;
+ Plan *plan = exec_subplan_get_plan(estate->es_plannedstmt, subplan);
EState *sp_estate;
- /*
- * Do access checking on the rangetable entries in the subquery.
- */
- ExecCheckRTPerms(subplan->rtable);
-
/*
* initialize my state
*/
* shares our Param ID space and es_query_cxt, however. XXX if rangetable
* access were done differently, the subquery could share our EState,
* which would eliminate some thrashing about in this module...
+ *
+ * XXX make that happen!
*/
sp_estate = CreateSubExecutorState(estate);
node->sub_estate = sp_estate;
- sp_estate->es_range_table = subplan->rtable;
+ sp_estate->es_range_table = estate->es_range_table;
sp_estate->es_param_list_info = estate->es_param_list_info;
sp_estate->es_param_exec_vals = estate->es_param_exec_vals;
sp_estate->es_tupleTable =
- ExecCreateTupleTable(ExecCountSlotsNode(subplan->plan) + 10);
+ ExecCreateTupleTable(ExecCountSlotsNode(plan) + 10);
sp_estate->es_snapshot = estate->es_snapshot;
sp_estate->es_crosscheck_snapshot = estate->es_crosscheck_snapshot;
sp_estate->es_instrument = estate->es_instrument;
+ sp_estate->es_plannedstmt = estate->es_plannedstmt;
/*
* Start up the subplan (this is a very cut-down form of InitPlan())
if (subplan->parParam == NIL && subplan->setParam == NIL)
eflags |= EXEC_FLAG_REWIND;
- node->planstate = ExecInitNode(subplan->plan, sp_estate, eflags);
+ node->planstate = ExecInitNode(plan, sp_estate, eflags);
node->needShutdown = true; /* now we need to shutdown the subplan */
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/nodeSubqueryscan.c,v 1.35 2007/01/05 22:19:28 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/nodeSubqueryscan.c,v 1.36 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "executor/execdebug.h"
#include "executor/nodeSubqueryscan.h"
-#include "parser/parsetree.h"
static TupleTableSlot *SubqueryNext(SubqueryScanState *node);
ExecInitSubqueryScan(SubqueryScan *node, EState *estate, int eflags)
{
SubqueryScanState *subquerystate;
- RangeTblEntry *rte;
EState *sp_estate;
/* check for unsupported flags */
Assert(!(eflags & EXEC_FLAG_MARK));
/*
- * SubqueryScan should not have any "normal" children.
+ * SubqueryScan should not have any "normal" children. Also, if planner
+ * left anything in subrtable, it's fishy.
*/
Assert(outerPlan(node) == NULL);
Assert(innerPlan(node) == NULL);
+ Assert(node->subrtable == NIL);
/*
* create state structure
* initialize subquery
*
* This should agree with ExecInitSubPlan
- */
- rte = rt_fetch(node->scan.scanrelid, estate->es_range_table);
- Assert(rte->rtekind == RTE_SUBQUERY);
-
- /*
- * Do access checking on the rangetable entries in the subquery.
- */
- ExecCheckRTPerms(rte->subquery->rtable);
-
- /*
+ *
* The subquery needs its own EState because it has its own rangetable. It
* shares our Param ID space and es_query_cxt, however. XXX if rangetable
* access were done differently, the subquery could share our EState,
* which would eliminate some thrashing about in this module...
+ *
+ * XXX make that happen!
*/
sp_estate = CreateSubExecutorState(estate);
subquerystate->sss_SubEState = sp_estate;
- sp_estate->es_range_table = rte->subquery->rtable;
+ sp_estate->es_range_table = estate->es_range_table;
sp_estate->es_param_list_info = estate->es_param_list_info;
sp_estate->es_param_exec_vals = estate->es_param_exec_vals;
sp_estate->es_tupleTable =
sp_estate->es_snapshot = estate->es_snapshot;
sp_estate->es_crosscheck_snapshot = estate->es_crosscheck_snapshot;
sp_estate->es_instrument = estate->es_instrument;
+ sp_estate->es_plannedstmt = estate->es_plannedstmt;
/*
* Start up the subplan (this is a very cut-down form of InitPlan())
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/executor/nodeValuesscan.c,v 1.6 2007/02/19 02:23:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/executor/nodeValuesscan.c,v 1.7 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "executor/executor.h"
#include "executor/nodeValuesscan.h"
-#include "parser/parsetree.h"
#include "utils/memutils.h"
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.367 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.368 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
COPY_NODE_FIELD(rtable);
COPY_NODE_FIELD(resultRelations);
COPY_NODE_FIELD(into);
+ COPY_NODE_FIELD(subplans);
COPY_NODE_FIELD(returningLists);
COPY_NODE_FIELD(rowMarks);
COPY_SCALAR_FIELD(nParamExec);
* copy remainder of node
*/
COPY_NODE_FIELD(subplan);
+ COPY_NODE_FIELD(subrtable);
return newnode;
}
COPY_SCALAR_FIELD(subLinkType);
COPY_NODE_FIELD(testexpr);
COPY_NODE_FIELD(paramIds);
- COPY_NODE_FIELD(plan);
COPY_SCALAR_FIELD(plan_id);
- COPY_NODE_FIELD(rtable);
+ COPY_SCALAR_FIELD(firstColType);
COPY_SCALAR_FIELD(useHashTable);
COPY_SCALAR_FIELD(unknownEqFalse);
COPY_NODE_FIELD(setParam);
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.299 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.300 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
COMPARE_SCALAR_FIELD(subLinkType);
COMPARE_NODE_FIELD(testexpr);
COMPARE_NODE_FIELD(paramIds);
- /* should compare plans, but have to settle for comparing plan IDs */
COMPARE_SCALAR_FIELD(plan_id);
- COMPARE_NODE_FIELD(rtable);
+ COMPARE_SCALAR_FIELD(firstColType);
COMPARE_SCALAR_FIELD(useHashTable);
COMPARE_SCALAR_FIELD(unknownEqFalse);
COMPARE_NODE_FIELD(setParam);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.300 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.301 2007/02/22 22:00:23 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
WRITE_NODE_FIELD(rtable);
WRITE_NODE_FIELD(resultRelations);
WRITE_NODE_FIELD(into);
+ WRITE_NODE_FIELD(subplans);
WRITE_NODE_FIELD(returningLists);
WRITE_NODE_FIELD(rowMarks);
WRITE_INT_FIELD(nParamExec);
_outScanInfo(str, (Scan *) node);
WRITE_NODE_FIELD(subplan);
+ WRITE_NODE_FIELD(subrtable);
}
static void
WRITE_ENUM_FIELD(subLinkType, SubLinkType);
WRITE_NODE_FIELD(testexpr);
WRITE_NODE_FIELD(paramIds);
- WRITE_NODE_FIELD(plan);
WRITE_INT_FIELD(plan_id);
- WRITE_NODE_FIELD(rtable);
+ WRITE_OID_FIELD(firstColType);
WRITE_BOOL_FIELD(useHashTable);
WRITE_BOOL_FIELD(unknownEqFalse);
WRITE_NODE_FIELD(setParam);
/* NB: this isn't a complete set of fields */
WRITE_NODE_FIELD(paramlist);
- WRITE_INT_FIELD(next_plan_id);
+ WRITE_NODE_FIELD(subplans);
+ WRITE_NODE_FIELD(subrtables);
+ WRITE_NODE_FIELD(finalrtable);
}
static void
WRITE_UINT_FIELD(pages);
WRITE_FLOAT_FIELD(tuples, "%.0f");
WRITE_NODE_FIELD(subplan);
+ WRITE_NODE_FIELD(subrtable);
WRITE_NODE_FIELD(baserestrictinfo);
WRITE_NODE_FIELD(joininfo);
WRITE_BOOL_FIELD(has_eclass_joins);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/nodes/print.c,v 1.84 2007/02/10 14:58:54 petere Exp $
+ * $PostgreSQL: pgsql/src/backend/nodes/print.c,v 1.85 2007/02/22 22:00:23 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
#include "parser/parsetree.h"
#include "utils/lsyscache.h"
-static char *plannode_type(Plan *p);
/*
* print
debugtup(slot, NULL);
}
-
-static char *
-plannode_type(Plan *p)
-{
- switch (nodeTag(p))
- {
- case T_Plan:
- return "PLAN";
- case T_Result:
- return "RESULT";
- case T_Append:
- return "APPEND";
- case T_BitmapAnd:
- return "BITMAPAND";
- case T_BitmapOr:
- return "BITMAPOR";
- case T_Scan:
- return "SCAN";
- case T_SeqScan:
- return "SEQSCAN";
- case T_IndexScan:
- return "INDEXSCAN";
- case T_BitmapIndexScan:
- return "BITMAPINDEXSCAN";
- case T_BitmapHeapScan:
- return "BITMAPHEAPSCAN";
- case T_TidScan:
- return "TIDSCAN";
- case T_SubqueryScan:
- return "SUBQUERYSCAN";
- case T_FunctionScan:
- return "FUNCTIONSCAN";
- case T_ValuesScan:
- return "VALUESSCAN";
- case T_Join:
- return "JOIN";
- case T_NestLoop:
- return "NESTLOOP";
- case T_MergeJoin:
- return "MERGEJOIN";
- case T_HashJoin:
- return "HASHJOIN";
- case T_Material:
- return "MATERIAL";
- case T_Sort:
- return "SORT";
- case T_Agg:
- return "AGG";
- case T_Unique:
- return "UNIQUE";
- case T_SetOp:
- return "SETOP";
- case T_Limit:
- return "LIMIT";
- case T_Hash:
- return "HASH";
- case T_Group:
- return "GROUP";
- default:
- return "UNKNOWN";
- }
-}
-
-/*
- * Recursively prints a simple text description of the plan tree
- */
-void
-print_plan_recursive(Plan *p, Query *parsetree, int indentLevel, char *label)
-{
- int i;
- char extraInfo[NAMEDATALEN + 100];
-
- if (!p)
- return;
- for (i = 0; i < indentLevel; i++)
- printf(" ");
- printf("%s%s :c=%.2f..%.2f :r=%.0f :w=%d ", label, plannode_type(p),
- p->startup_cost, p->total_cost,
- p->plan_rows, p->plan_width);
- if (IsA(p, Scan) ||
- IsA(p, SeqScan) ||
- IsA(p, BitmapHeapScan))
- {
- RangeTblEntry *rte;
-
- rte = rt_fetch(((Scan *) p)->scanrelid, parsetree->rtable);
- strlcpy(extraInfo, rte->eref->aliasname, NAMEDATALEN);
- }
- else if (IsA(p, IndexScan))
- {
- RangeTblEntry *rte;
-
- rte = rt_fetch(((IndexScan *) p)->scan.scanrelid, parsetree->rtable);
- strlcpy(extraInfo, rte->eref->aliasname, NAMEDATALEN);
- }
- else if (IsA(p, FunctionScan))
- {
- RangeTblEntry *rte;
-
- rte = rt_fetch(((FunctionScan *) p)->scan.scanrelid, parsetree->rtable);
- strlcpy(extraInfo, rte->eref->aliasname, NAMEDATALEN);
- }
- else if (IsA(p, ValuesScan))
- {
- RangeTblEntry *rte;
-
- rte = rt_fetch(((ValuesScan *) p)->scan.scanrelid, parsetree->rtable);
- strlcpy(extraInfo, rte->eref->aliasname, NAMEDATALEN);
- }
- else
- extraInfo[0] = '\0';
- if (extraInfo[0] != '\0')
- printf(" ( %s )\n", extraInfo);
- else
- printf("\n");
- print_plan_recursive(p->lefttree, parsetree, indentLevel + 3, "l: ");
- print_plan_recursive(p->righttree, parsetree, indentLevel + 3, "r: ");
-
- if (IsA(p, Append))
- {
- ListCell *l;
- Append *appendplan = (Append *) p;
-
- foreach(l, appendplan->appendplans)
- {
- Plan *subnode = (Plan *) lfirst(l);
-
- print_plan_recursive(subnode, parsetree, indentLevel + 3, "a: ");
- }
- }
-
- if (IsA(p, BitmapAnd))
- {
- ListCell *l;
- BitmapAnd *bitmapandplan = (BitmapAnd *) p;
-
- foreach(l, bitmapandplan->bitmapplans)
- {
- Plan *subnode = (Plan *) lfirst(l);
-
- print_plan_recursive(subnode, parsetree, indentLevel + 3, "a: ");
- }
- }
-
- if (IsA(p, BitmapOr))
- {
- ListCell *l;
- BitmapOr *bitmaporplan = (BitmapOr *) p;
-
- foreach(l, bitmaporplan->bitmapplans)
- {
- Plan *subnode = (Plan *) lfirst(l);
-
- print_plan_recursive(subnode, parsetree, indentLevel + 3, "a: ");
- }
- }
-}
-
-/*
- * print_plan
- *
- * prints just the plan node types
- */
-void
-print_plan(Plan *p, Query *parsetree)
-{
- print_plan_recursive(p, parsetree, 0, "");
-}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.160 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.161 2007/02/22 22:00:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
root->query_level + 1,
tuple_fraction,
&subroot);
+ rel->subrtable = subroot->parse->rtable;
/* Copy number of output rows from subplan */
rel->tuples = rel->subplan->plan_rows;
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.177 2007/01/22 20:00:39 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.178 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
bool enable_mergejoin = true;
bool enable_hashjoin = true;
+typedef struct
+{
+ PlannerInfo *root;
+ QualCost total;
+} cost_qual_eval_context;
static MergeScanSelCache *cached_scansel(PlannerInfo *root,
RestrictInfo *rinfo,
PathKey *pathkey);
-static bool cost_qual_eval_walker(Node *node, QualCost *total);
+static bool cost_qual_eval_walker(Node *node, cost_qual_eval_context *context);
static Selectivity approx_selectivity(PlannerInfo *root, List *quals,
JoinType jointype);
static Selectivity join_in_selectivity(JoinPath *path, PlannerInfo *root);
{
QualCost index_qual_cost;
- cost_qual_eval(&index_qual_cost, indexQuals);
+ cost_qual_eval(&index_qual_cost, indexQuals, root);
/* any startup cost still has to be paid ... */
cpu_per_tuple -= index_qual_cost.per_tuple;
}
Assert(rte->rtekind == RTE_FUNCTION);
/* Estimate costs of executing the function expression */
- cost_qual_eval_node(&exprcost, rte->funcexpr);
+ cost_qual_eval_node(&exprcost, rte->funcexpr, root);
startup_cost += exprcost.startup;
cpu_per_tuple = exprcost.per_tuple;
ntuples = outer_path_rows * inner_path_rows * joininfactor;
/* CPU costs */
- cost_qual_eval(&restrict_qual_cost, path->joinrestrictinfo);
+ cost_qual_eval(&restrict_qual_cost, path->joinrestrictinfo, root);
startup_cost += restrict_qual_cost.startup;
cpu_per_tuple = cpu_tuple_cost + restrict_qual_cost.per_tuple;
run_cost += cpu_per_tuple * ntuples;
*/
merge_selec = approx_selectivity(root, mergeclauses,
path->jpath.jointype);
- cost_qual_eval(&merge_qual_cost, mergeclauses);
- cost_qual_eval(&qp_qual_cost, path->jpath.joinrestrictinfo);
+ cost_qual_eval(&merge_qual_cost, mergeclauses, root);
+ cost_qual_eval(&qp_qual_cost, path->jpath.joinrestrictinfo, root);
qp_qual_cost.startup -= merge_qual_cost.startup;
qp_qual_cost.per_tuple -= merge_qual_cost.per_tuple;
*/
hash_selec = approx_selectivity(root, hashclauses,
path->jpath.jointype);
- cost_qual_eval(&hash_qual_cost, hashclauses);
- cost_qual_eval(&qp_qual_cost, path->jpath.joinrestrictinfo);
+ cost_qual_eval(&hash_qual_cost, hashclauses, root);
+ cost_qual_eval(&qp_qual_cost, path->jpath.joinrestrictinfo, root);
qp_qual_cost.startup -= hash_qual_cost.startup;
qp_qual_cost.per_tuple -= hash_qual_cost.per_tuple;
* and a per-evaluation component.
*/
void
-cost_qual_eval(QualCost *cost, List *quals)
+cost_qual_eval(QualCost *cost, List *quals, PlannerInfo *root)
{
+ cost_qual_eval_context context;
ListCell *l;
- cost->startup = 0;
- cost->per_tuple = 0;
+ context.root = root;
+ context.total.startup = 0;
+ context.total.per_tuple = 0;
/* We don't charge any cost for the implicit ANDing at top level ... */
{
Node *qual = (Node *) lfirst(l);
- cost_qual_eval_walker(qual, cost);
+ cost_qual_eval_walker(qual, &context);
}
+
+ *cost = context.total;
}
/*
* As above, for a single RestrictInfo or expression.
*/
void
-cost_qual_eval_node(QualCost *cost, Node *qual)
+cost_qual_eval_node(QualCost *cost, Node *qual, PlannerInfo *root)
{
- cost->startup = 0;
- cost->per_tuple = 0;
- cost_qual_eval_walker(qual, cost);
+ cost_qual_eval_context context;
+
+ context.root = root;
+ context.total.startup = 0;
+ context.total.per_tuple = 0;
+
+ cost_qual_eval_walker(qual, &context);
+
+ *cost = context.total;
}
static bool
-cost_qual_eval_walker(Node *node, QualCost *total)
+cost_qual_eval_walker(Node *node, cost_qual_eval_context *context)
{
if (node == NULL)
return false;
if (rinfo->eval_cost.startup < 0)
{
- rinfo->eval_cost.startup = 0;
- rinfo->eval_cost.per_tuple = 0;
+ cost_qual_eval_context locContext;
+
+ locContext.root = context->root;
+ locContext.total.startup = 0;
+ locContext.total.per_tuple = 0;
/*
* For an OR clause, recurse into the marked-up tree so that
* we set the eval_cost for contained RestrictInfos too.
*/
if (rinfo->orclause)
- cost_qual_eval_walker((Node *) rinfo->orclause,
- &rinfo->eval_cost);
+ cost_qual_eval_walker((Node *) rinfo->orclause, &locContext);
else
- cost_qual_eval_walker((Node *) rinfo->clause,
- &rinfo->eval_cost);
+ cost_qual_eval_walker((Node *) rinfo->clause, &locContext);
/*
* If the RestrictInfo is marked pseudoconstant, it will be tested
* only once, so treat its cost as all startup cost.
if (rinfo->pseudoconstant)
{
/* count one execution during startup */
- rinfo->eval_cost.startup += rinfo->eval_cost.per_tuple;
- rinfo->eval_cost.per_tuple = 0;
+ locContext.total.startup += locContext.total.per_tuple;
+ locContext.total.per_tuple = 0;
}
+ rinfo->eval_cost = locContext.total;
}
- total->startup += rinfo->eval_cost.startup;
- total->per_tuple += rinfo->eval_cost.per_tuple;
+ context->total.startup += rinfo->eval_cost.startup;
+ context->total.per_tuple += rinfo->eval_cost.per_tuple;
/* do NOT recurse into children */
return false;
}
*/
if (IsA(node, FuncExpr))
{
- total->per_tuple += get_func_cost(((FuncExpr *) node)->funcid) *
- cpu_operator_cost;
+ context->total.per_tuple +=
+ get_func_cost(((FuncExpr *) node)->funcid) * cpu_operator_cost;
}
else if (IsA(node, OpExpr) ||
IsA(node, DistinctExpr) ||
{
/* rely on struct equivalence to treat these all alike */
set_opfuncid((OpExpr *) node);
- total->per_tuple += get_func_cost(((OpExpr *) node)->opfuncid) *
- cpu_operator_cost;
+ context->total.per_tuple +=
+ get_func_cost(((OpExpr *) node)->opfuncid) * cpu_operator_cost;
}
else if (IsA(node, ScalarArrayOpExpr))
{
Node *arraynode = (Node *) lsecond(saop->args);
set_sa_opfuncid(saop);
- total->per_tuple += get_func_cost(saop->opfuncid) *
+ context->total.per_tuple += get_func_cost(saop->opfuncid) *
cpu_operator_cost * estimate_array_length(arraynode) * 0.5;
}
else if (IsA(node, RowCompareExpr))
{
Oid opid = lfirst_oid(lc);
- total->per_tuple += get_func_cost(get_opcode(opid)) *
+ context->total.per_tuple += get_func_cost(get_opcode(opid)) *
cpu_operator_cost;
}
}
* subplan by hashing.
*/
SubPlan *subplan = (SubPlan *) node;
- Plan *plan = subplan->plan;
+ Plan *plan = planner_subplan_get_plan(context->root, subplan);
if (subplan->useHashTable)
{
* cpu_operator_cost per tuple for the work of loading the
* hashtable, too.
*/
- total->startup += plan->total_cost +
+ context->total.startup += plan->total_cost +
cpu_operator_cost * plan->plan_rows;
/*
if (subplan->subLinkType == EXISTS_SUBLINK)
{
/* we only need to fetch 1 tuple */
- total->per_tuple += plan_run_cost / plan->plan_rows;
+ context->total.per_tuple += plan_run_cost / plan->plan_rows;
}
else if (subplan->subLinkType == ALL_SUBLINK ||
subplan->subLinkType == ANY_SUBLINK)
{
/* assume we need 50% of the tuples */
- total->per_tuple += 0.50 * plan_run_cost;
+ context->total.per_tuple += 0.50 * plan_run_cost;
/* also charge a cpu_operator_cost per row examined */
- total->per_tuple += 0.50 * plan->plan_rows * cpu_operator_cost;
+ context->total.per_tuple +=
+ 0.50 * plan->plan_rows * cpu_operator_cost;
}
else
{
/* assume we need all tuples */
- total->per_tuple += plan_run_cost;
+ context->total.per_tuple += plan_run_cost;
}
/*
if (subplan->parParam == NIL &&
(IsA(plan, Sort) ||
IsA(plan, Material)))
- total->startup += plan->startup_cost;
+ context->total.startup += plan->startup_cost;
else
- total->per_tuple += plan->startup_cost;
+ context->total.per_tuple += plan->startup_cost;
}
}
/* recurse into children */
return expression_tree_walker(node, cost_qual_eval_walker,
- (void *) total);
+ (void *) context);
}
rel->rows = clamp_row_est(nrows);
- cost_qual_eval(&rel->baserestrictcost, rel->baserestrictinfo);
+ cost_qual_eval(&rel->baserestrictcost, rel->baserestrictinfo, root);
set_rel_width(root, rel);
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.225 2007/02/19 02:23:12 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.226 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
* create_plan
* Creates the access plan for a query by tracing backwards through the
* desired chain of pathnodes, starting at the node 'best_path'. For
- * every pathnode found:
- * (1) Create a corresponding plan node containing appropriate id,
- * target list, and qualification information.
- * (2) Modify qual clauses of join nodes so that subplan attributes are
- * referenced using relative values.
- * (3) Target lists are not modified, but will be in setrefs.c.
+ * every pathnode found, we create a corresponding plan node containing
+ * appropriate id, target list, and qualification information.
+ *
+ * The tlists and quals in the plan tree are still in planner format,
+ * ie, Vars still correspond to the parser's numbering. This will be
+ * fixed later by setrefs.c.
*
* best_path is the best access path
*
if (!pseudoconstants)
return plan;
- return (Plan *) make_result((List *) copyObject(plan->targetlist),
+ return (Plan *) make_result(root,
+ plan->targetlist,
(Node *) pseudoconstants,
plan);
}
if (best_path->subpaths == NIL)
{
/* Generate a Result plan with constant-FALSE gating qual */
- return (Plan *) make_result(tlist,
+ return (Plan *) make_result(root,
+ tlist,
(Node *) list_make1(makeBoolConst(false,
false)),
NULL);
quals = order_qual_clauses(root, best_path->quals);
- return make_result(tlist, (Node *) quals, NULL);
+ return make_result(root, tlist, (Node *) quals, NULL);
}
/*
* node to help it along.
*/
if (!is_projection_capable_plan(subplan))
- subplan = (Plan *) make_result(newtlist, NULL, subplan);
+ subplan = (Plan *) make_result(root, newtlist, NULL, subplan);
else
subplan->targetlist = newtlist;
}
*/
bitmapqualorig = list_difference_ptr(bitmapqualorig, qpqual);
- /*
- * Copy the finished bitmapqualorig to make sure we have an independent
- * copy --- needed in case there are subplans in the index quals
- */
- bitmapqualorig = copyObject(bitmapqualorig);
-
/* Finally ready to build the plan node */
scan_plan = make_bitmap_heapscan(tlist,
qpqual,
scan_plan = make_subqueryscan(tlist,
scan_clauses,
scan_relid,
- best_path->parent->subplan);
+ best_path->parent->subplan,
+ best_path->parent->subrtable);
copy_path_costsize(&scan_plan->scan.plan, best_path);
Node *clause = (Node *) lfirst(lc);
QualCost qcost;
- cost_qual_eval_node(&qcost, clause);
+ cost_qual_eval_node(&qcost, clause, root);
items[i].clause = clause;
items[i].cost = qcost.per_tuple;
i++;
make_subqueryscan(List *qptlist,
List *qpqual,
Index scanrelid,
- Plan *subplan)
+ Plan *subplan,
+ List *subrtable)
{
SubqueryScan *node = makeNode(SubqueryScan);
Plan *plan = &node->scan.plan;
plan->righttree = NULL;
node->scan.scanrelid = scanrelid;
node->subplan = subplan;
+ node->subrtable = subrtable;
return node;
}
* plan; this only affects EXPLAIN display not decisions.
*/
plan->startup_cost = plan->total_cost;
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
lefttree->plan_width);
plan->startup_cost = sort_path.startup_cost;
plan->total_cost = sort_path.total_cost;
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
* Do we need to insert a Result node?
*/
if (!is_projection_capable_plan(lefttree))
- {
- tlist = copyObject(tlist);
- lefttree = (Plan *) make_result(tlist, NULL, lefttree);
- }
+ lefttree = (Plan *) make_result(root, tlist, NULL, lefttree);
/*
* Add resjunk entry to input's tlist
Plan *plan = &node->plan;
/* cost should be inserted by caller */
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
*/
if (qual)
{
- cost_qual_eval(&qual_cost, qual);
+ cost_qual_eval(&qual_cost, qual, root);
plan->startup_cost += qual_cost.startup;
plan->total_cost += qual_cost.startup;
plan->total_cost += qual_cost.per_tuple * plan->plan_rows;
}
- cost_qual_eval(&qual_cost, tlist);
+ cost_qual_eval(&qual_cost, tlist, root);
plan->startup_cost += qual_cost.startup;
plan->total_cost += qual_cost.startup;
plan->total_cost += qual_cost.per_tuple * plan->plan_rows;
*/
if (qual)
{
- cost_qual_eval(&qual_cost, qual);
+ cost_qual_eval(&qual_cost, qual, root);
plan->startup_cost += qual_cost.startup;
plan->total_cost += qual_cost.startup;
plan->total_cost += qual_cost.per_tuple * plan->plan_rows;
}
- cost_qual_eval(&qual_cost, tlist);
+ cost_qual_eval(&qual_cost, tlist, root);
plan->startup_cost += qual_cost.startup;
plan->total_cost += qual_cost.startup;
plan->total_cost += qual_cost.per_tuple * plan->plan_rows;
* has a better idea.
*/
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
if (plan->plan_rows < 1)
plan->plan_rows = 1;
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
plan->plan_rows = 1;
}
- plan->targetlist = copyObject(lefttree->targetlist);
+ plan->targetlist = lefttree->targetlist;
plan->qual = NIL;
plan->lefttree = lefttree;
plan->righttree = NULL;
* cost. In either case, tlist eval cost is not to be included here.
*/
Result *
-make_result(List *tlist,
+make_result(PlannerInfo *root,
+ List *tlist,
Node *resconstantqual,
Plan *subplan)
{
{
QualCost qual_cost;
- cost_qual_eval(&qual_cost, (List *) resconstantqual);
+ cost_qual_eval(&qual_cost, (List *) resconstantqual, root);
/* resconstantqual is evaluated once at startup */
plan->startup_cost += qual_cost.startup + qual_cost.per_tuple;
plan->total_cost += qual_cost.startup + qual_cost.per_tuple;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.28 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.29 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
/*
* Generate the output plan --- basically just a Result
*/
- plan = (Plan *) make_result(tlist, hqual, NULL);
+ plan = (Plan *) make_result(root, tlist, hqual, NULL);
/* Account for evaluation cost of the tlist (make_result did the rest) */
- cost_qual_eval(&tlist_cost, tlist);
+ cost_qual_eval(&tlist_cost, tlist, root);
plan->startup_cost += tlist_cost.startup;
plan->total_cost += tlist_cost.startup + tlist_cost.per_tuple;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/planner.c,v 1.214 2007/02/20 17:32:15 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/planner.c,v 1.215 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
double tuple_fraction;
PlannerInfo *root;
Plan *top_plan;
+ ListCell *lp,
+ *lr;
/*
* Set up global state for this planner invocation. This data is needed
glob->boundParams = boundParams;
glob->paramlist = NIL;
- glob->next_plan_id = 0;
+ glob->subplans = NIL;
+ glob->subrtables = NIL;
+ glob->finalrtable = NIL;
/* Determine what fraction of the plan is likely to be scanned */
if (isCursor)
}
/* final cleanup of the plan */
- top_plan = set_plan_references(top_plan, parse->rtable);
+ Assert(glob->finalrtable == NIL);
+ top_plan = set_plan_references(glob, top_plan, root->parse->rtable);
+ /* ... and the subplans (both regular subplans and initplans) */
+ Assert(list_length(glob->subplans) == list_length(glob->subrtables));
+ forboth(lp, glob->subplans, lr, glob->subrtables)
+ {
+ Plan *subplan = (Plan *) lfirst(lp);
+ List *subrtable = (List *) lfirst(lr);
+
+ lfirst(lp) = set_plan_references(glob, subplan, subrtable);
+ }
/* build the PlannedStmt result */
result = makeNode(PlannedStmt);
result->commandType = parse->commandType;
result->canSetTag = parse->canSetTag;
result->planTree = top_plan;
- result->rtable = parse->rtable;
+ result->rtable = glob->finalrtable;
result->resultRelations = root->resultRelations;
result->into = parse->into;
+ result->subplans = glob->subplans;
result->returningLists = root->returningLists;
result->rowMarks = parse->rowMarks;
result->nParamExec = list_length(glob->paramlist);
Index level, double tuple_fraction,
PlannerInfo **subroot)
{
- int saved_plan_id = glob->next_plan_id;
+ int num_old_subplans = list_length(glob->subplans);
PlannerInfo *root;
Plan *plan;
List *newHaving;
* initPlan list and extParam/allParam sets for plan nodes, and attach the
* initPlans to the top plan node.
*/
- if (root->glob->next_plan_id != saved_plan_id || root->query_level > 1)
+ if (list_length(glob->subplans) != num_old_subplans ||
+ root->query_level > 1)
SS_finalize_plan(root, plan);
/* Return internal info if caller wants it */
* If we managed to exclude every child rel, return a dummy plan
*/
if (subplans == NIL)
- return (Plan *) make_result(tlist,
+ return (Plan *) make_result(root,
+ tlist,
(Node *) list_make1(makeBoolConst(false,
false)),
NULL);
*/
parse->rtable = rtable;
+ /* Suppress Append if there's only one surviving child rel */
+ if (list_length(subplans) == 1)
+ return (Plan *) linitial(subplans);
+
return (Plan *) make_append(subplans, true, tlist);
}
*/
if (!is_projection_capable_plan(result_plan))
{
- result_plan = (Plan *) make_result(sub_tlist, NULL,
+ result_plan = (Plan *) make_result(root,
+ sub_tlist,
+ NULL,
result_plan);
}
else
* tuples) --- so make_agg() and make_group() are responsible
* for computing the added cost.
*/
- cost_qual_eval(&tlist_cost, sub_tlist);
+ cost_qual_eval(&tlist_cost, sub_tlist, root);
result_plan->startup_cost += tlist_cost.startup;
result_plan->total_cost += tlist_cost.startup +
tlist_cost.per_tuple * result_plan->plan_rows;
* this routine to avoid having to generate the plan in the
* first place.
*/
- result_plan = (Plan *) make_result(tlist,
+ result_plan = (Plan *) make_result(root,
+ tlist,
parse->havingQual,
NULL);
}
{
List *rlist;
+ Assert(parse->resultRelation);
rlist = set_returning_clause_references(parse->returningList,
result_plan,
parse->resultRelation);
* pass down only c,d,a+b, but it's not really worth the trouble to
* eliminate simple var references from the subplan. We will avoid doing
* the extra computation to recompute a+b at the outer level; see
- * replace_vars_with_subplan_refs() in setrefs.c.)
+ * fix_upper_expr() in setrefs.c.)
*
* If we are grouping or aggregating, *and* there are no non-Var grouping
* expressions, then the returned tlist is effectively dummy; we do not
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/setrefs.c,v 1.130 2007/02/19 02:23:12 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/setrefs.c,v 1.131 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
tlist_vinfo vars[1]; /* VARIABLE LENGTH ARRAY */
} indexed_tlist; /* VARIABLE LENGTH STRUCT */
+typedef struct
+{
+ int rtoffset;
+} fix_scan_expr_context;
+
typedef struct
{
indexed_tlist *outer_itlist;
indexed_tlist *inner_itlist;
Index acceptable_rel;
-} join_references_context;
+ int rtoffset;
+} fix_join_expr_context;
typedef struct
{
indexed_tlist *subplan_itlist;
Index subvarno;
-} replace_vars_with_subplan_refs_context;
+ int rtoffset;
+} fix_upper_expr_context;
+
+#define fix_scan_list(lst, rtoffset) \
+ ((List *) fix_scan_expr((Node *) (lst), rtoffset))
-static Plan *set_subqueryscan_references(SubqueryScan *plan, List *rtable);
+static Plan *set_plan_refs(PlannerGlobal *glob, Plan *plan, int rtoffset);
+static Plan *set_subqueryscan_references(PlannerGlobal *glob,
+ SubqueryScan *plan,
+ int rtoffset);
static bool trivial_subqueryscan(SubqueryScan *plan);
-static void adjust_plan_varnos(Plan *plan, int rtoffset);
-static void adjust_expr_varnos(Node *node, int rtoffset);
-static bool adjust_expr_varnos_walker(Node *node, int *context);
-static void fix_expr_references(Plan *plan, Node *node);
-static bool fix_expr_references_walker(Node *node, void *context);
-static void set_join_references(Join *join);
+static Node *fix_scan_expr(Node *node, int rtoffset);
+static Node *fix_scan_expr_mutator(Node *node, fix_scan_expr_context *context);
+static void set_join_references(Join *join, int rtoffset);
static void set_inner_join_references(Plan *inner_plan,
indexed_tlist *outer_itlist);
-static void set_uppernode_references(Plan *plan, Index subvarno);
+static void set_upper_references(Plan *plan, Index subvarno, int rtoffset);
static indexed_tlist *build_tlist_index(List *tlist);
static Var *search_indexed_tlist_for_var(Var *var,
indexed_tlist *itlist,
- Index newvarno);
+ Index newvarno,
+ int rtoffset);
static Var *search_indexed_tlist_for_non_var(Node *node,
indexed_tlist *itlist,
Index newvarno);
-static List *join_references(List *clauses,
- indexed_tlist *outer_itlist,
- indexed_tlist *inner_itlist,
- Index acceptable_rel);
-static Node *join_references_mutator(Node *node,
- join_references_context *context);
-static Node *replace_vars_with_subplan_refs(Node *node,
- indexed_tlist *subplan_itlist,
- Index subvarno);
-static Node *replace_vars_with_subplan_refs_mutator(Node *node,
- replace_vars_with_subplan_refs_context *context);
+static List *fix_join_expr(List *clauses,
+ indexed_tlist *outer_itlist,
+ indexed_tlist *inner_itlist,
+ Index acceptable_rel, int rtoffset);
+static Node *fix_join_expr_mutator(Node *node,
+ fix_join_expr_context *context);
+static Node *fix_upper_expr(Node *node,
+ indexed_tlist *subplan_itlist,
+ Index subvarno,
+ int rtoffset);
+static Node *fix_upper_expr_mutator(Node *node,
+ fix_upper_expr_context *context);
static bool fix_opfuncids_walker(Node *node, void *context);
*
* This is the final processing pass of the planner/optimizer. The plan
* tree is complete; we just have to adjust some representational details
- * for the convenience of the executor. We update Vars in upper plan nodes
- * to refer to the outputs of their subplans, and we compute regproc OIDs
- * for operators (ie, we look up the function that implements each op).
+ * for the convenience of the executor:
+ *
+ * 1. We flatten the various subquery rangetables into a single list, and
+ * zero out RangeTblEntry fields that are not useful to the executor.
+ *
+ * 2. We adjust Vars in scan nodes to be consistent with the flat rangetable.
+ *
+ * 3. We adjust Vars in upper plan nodes to refer to the outputs of their
+ * subplans.
+ *
+ * 4. We compute regproc OIDs for operators (ie, we look up the function
+ * that implements each op).
*
* We also perform one final optimization step, which is to delete
* SubqueryScan plan nodes that aren't doing anything useful (ie, have
* no qual and a no-op targetlist). The reason for doing this last is that
* it can't readily be done before set_plan_references, because it would
- * break set_uppernode_references: the Vars in the subquery's top tlist
- * won't match up with the Vars in the outer plan tree. The SubqueryScan
+ * break set_upper_references: the Vars in the subquery's top tlist
+ * wouldn't match up with the Vars in the outer plan tree. The SubqueryScan
* serves a necessary function as a buffer between outer query and subquery
- * variable numbering ... but the executor doesn't care about that, only the
- * planner.
+ * variable numbering ... but after we've flattened the rangetable this is
+ * no longer a problem, since there's only one rtindex namespace.
*
* set_plan_references recursively traverses the whole plan tree.
*
+ * Inputs:
+ * glob: global data for planner run
+ * plan: the topmost node of the plan
+ * rtable: the rangetable for the current subquery
+ *
* The return value is normally the same Plan node passed in, but can be
* different when the passed-in Plan is a SubqueryScan we decide isn't needed.
*
- * Note: to delete a SubqueryScan, we have to renumber Vars in its child nodes
- * and append the modified subquery rangetable to the outer rangetable.
- * Therefore "rtable" is an in/out argument and really should be declared
- * "List **". But in the interest of notational simplicity we don't do that.
- * (Since rtable can't be NIL if there's a SubqueryScan, the list header
- * address won't change when we append a subquery rangetable.)
+ * The flattened rangetable entries are appended to glob->finalrtable.
+ *
+ * Notice that we modify Plan nodes in-place, but use expression_tree_mutator
+ * to process targetlist and qual expressions. We can assume that the Plan
+ * nodes were just built by the planner and are not multiply referenced, but
+ * it's not so safe to assume that for expression tree nodes.
*/
Plan *
-set_plan_references(Plan *plan, List *rtable)
+set_plan_references(PlannerGlobal *glob, Plan *plan, List *rtable)
+{
+ int rtoffset = list_length(glob->finalrtable);
+ ListCell *lc;
+
+ /*
+ * In the flat rangetable, we zero out substructure pointers that are
+ * not needed by the executor; this reduces the storage space and
+ * copying cost for cached plans.
+ */
+ foreach(lc, rtable)
+ {
+ RangeTblEntry *rte = (RangeTblEntry *) lfirst(lc);
+ RangeTblEntry *newrte;
+
+ /* flat copy to duplicate all the scalar fields */
+ newrte = (RangeTblEntry *) palloc(sizeof(RangeTblEntry));
+ memcpy(newrte, rte, sizeof(RangeTblEntry));
+
+ /* zap unneeded sub-structure (we keep only the eref Alias) */
+ newrte->subquery = NULL;
+ newrte->funcexpr = NULL;
+ newrte->funccoltypes = NIL;
+ newrte->funccoltypmods = NIL;
+ newrte->values_lists = NIL;
+ newrte->joinaliasvars = NIL;
+ newrte->alias = NULL;
+
+ glob->finalrtable = lappend(glob->finalrtable, newrte);
+ }
+
+ /* Now fix the Plan tree */
+ return set_plan_refs(glob, plan, rtoffset);
+}
+
+/*
+ * set_plan_refs: recurse through the Plan nodes of a single subquery level
+ */
+static Plan *
+set_plan_refs(PlannerGlobal *glob, Plan *plan, int rtoffset)
{
ListCell *l;
switch (nodeTag(plan))
{
case T_SeqScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
+ {
+ SeqScan *splan = (SeqScan *) plan;
+
+ splan->scanrelid += rtoffset;
+ splan->plan.targetlist =
+ fix_scan_list(splan->plan.targetlist, rtoffset);
+ splan->plan.qual =
+ fix_scan_list(splan->plan.qual, rtoffset);
+ }
break;
case T_IndexScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan,
- (Node *) ((IndexScan *) plan)->indexqual);
- fix_expr_references(plan,
- (Node *) ((IndexScan *) plan)->indexqualorig);
+ {
+ IndexScan *splan = (IndexScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ splan->scan.plan.targetlist =
+ fix_scan_list(splan->scan.plan.targetlist, rtoffset);
+ splan->scan.plan.qual =
+ fix_scan_list(splan->scan.plan.qual, rtoffset);
+ splan->indexqual =
+ fix_scan_list(splan->indexqual, rtoffset);
+ splan->indexqualorig =
+ fix_scan_list(splan->indexqualorig, rtoffset);
+ }
break;
case T_BitmapIndexScan:
- /* no need to fix targetlist and qual */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- fix_expr_references(plan,
- (Node *) ((BitmapIndexScan *) plan)->indexqual);
- fix_expr_references(plan,
- (Node *) ((BitmapIndexScan *) plan)->indexqualorig);
+ {
+ BitmapIndexScan *splan = (BitmapIndexScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ /* no need to fix targetlist and qual */
+ Assert(splan->scan.plan.targetlist == NIL);
+ Assert(splan->scan.plan.qual == NIL);
+ splan->indexqual =
+ fix_scan_list(splan->indexqual, rtoffset);
+ splan->indexqualorig =
+ fix_scan_list(splan->indexqualorig, rtoffset);
+ }
break;
case T_BitmapHeapScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan,
- (Node *) ((BitmapHeapScan *) plan)->bitmapqualorig);
+ {
+ BitmapHeapScan *splan = (BitmapHeapScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ splan->scan.plan.targetlist =
+ fix_scan_list(splan->scan.plan.targetlist, rtoffset);
+ splan->scan.plan.qual =
+ fix_scan_list(splan->scan.plan.qual, rtoffset);
+ splan->bitmapqualorig =
+ fix_scan_list(splan->bitmapqualorig, rtoffset);
+ }
break;
case T_TidScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, (Node *) ((TidScan *) plan)->tidquals);
+ {
+ TidScan *splan = (TidScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ splan->scan.plan.targetlist =
+ fix_scan_list(splan->scan.plan.targetlist, rtoffset);
+ splan->scan.plan.qual =
+ fix_scan_list(splan->scan.plan.qual, rtoffset);
+ splan->tidquals =
+ fix_scan_list(splan->tidquals, rtoffset);
+ }
break;
case T_SubqueryScan:
/* Needs special treatment, see comments below */
- return set_subqueryscan_references((SubqueryScan *) plan, rtable);
+ return set_subqueryscan_references(glob,
+ (SubqueryScan *) plan,
+ rtoffset);
case T_FunctionScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, ((FunctionScan *) plan)->funcexpr);
+ {
+ FunctionScan *splan = (FunctionScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ splan->scan.plan.targetlist =
+ fix_scan_list(splan->scan.plan.targetlist, rtoffset);
+ splan->scan.plan.qual =
+ fix_scan_list(splan->scan.plan.qual, rtoffset);
+ splan->funcexpr =
+ fix_scan_expr(splan->funcexpr, rtoffset);
+ }
break;
case T_ValuesScan:
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan,
- (Node *) ((ValuesScan *) plan)->values_lists);
+ {
+ ValuesScan *splan = (ValuesScan *) plan;
+
+ splan->scan.scanrelid += rtoffset;
+ splan->scan.plan.targetlist =
+ fix_scan_list(splan->scan.plan.targetlist, rtoffset);
+ splan->scan.plan.qual =
+ fix_scan_list(splan->scan.plan.qual, rtoffset);
+ splan->values_lists =
+ fix_scan_list(splan->values_lists, rtoffset);
+ }
break;
+
case T_NestLoop:
- set_join_references((Join *) plan);
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
- break;
case T_MergeJoin:
- set_join_references((Join *) plan);
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
- fix_expr_references(plan,
- (Node *) ((MergeJoin *) plan)->mergeclauses);
- break;
case T_HashJoin:
- set_join_references((Join *) plan);
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
- fix_expr_references(plan,
- (Node *) ((HashJoin *) plan)->hashclauses);
+ set_join_references((Join *) plan, rtoffset);
break;
+
case T_Hash:
case T_Material:
case T_Sort:
/*
* These plan types don't actually bother to evaluate their
- * targetlists (because they just return their unmodified input
- * tuples). The optimizer is lazy about creating really valid
- * targetlists for them --- it tends to just put in a pointer to
- * the child plan node's tlist. Hence, we leave the tlist alone.
- * In particular, we do not want to process subplans in the tlist,
- * since we will likely end up reprocessing subplans that also
- * appear in lower levels of the plan tree!
- *
+ * targetlists, because they just return their unmodified input
+ * tuples. Even though the targetlist won't be used by the
+ * executor, we fix it up for possible use by EXPLAIN (not to
+ * mention ease of debugging --- wrong varnos are very confusing).
+ */
+ plan->targetlist =
+ fix_scan_list(plan->targetlist, rtoffset);
+ /*
* Since these plan types don't check quals either, we should not
* find any qual expression attached to them.
*/
Assert(plan->qual == NIL);
break;
case T_Limit:
-
- /*
- * Like the plan types above, Limit doesn't evaluate its tlist or
- * quals. It does have live expressions for limit/offset,
- * however.
- */
- Assert(plan->qual == NIL);
- fix_expr_references(plan, ((Limit *) plan)->limitOffset);
- fix_expr_references(plan, ((Limit *) plan)->limitCount);
+ {
+ Limit *splan = (Limit *) plan;
+
+ /*
+ * Like the plan types above, Limit doesn't evaluate its tlist
+ * or quals. It does have live expressions for limit/offset,
+ * however.
+ */
+ splan->plan.targetlist =
+ fix_scan_list(splan->plan.targetlist, rtoffset);
+ Assert(splan->plan.qual == NIL);
+ splan->limitOffset =
+ fix_scan_expr(splan->limitOffset, rtoffset);
+ splan->limitCount =
+ fix_scan_expr(splan->limitCount, rtoffset);
+ }
break;
case T_Agg:
case T_Group:
- set_uppernode_references(plan, (Index) 0);
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
+ set_upper_references(plan, (Index) 0, rtoffset);
break;
case T_Result:
-
- /*
- * Result may or may not have a subplan; no need to fix up subplan
- * references if it hasn't got one...
- *
- * XXX why does Result use a different subvarno from Agg/Group?
- */
- if (plan->lefttree != NULL)
- set_uppernode_references(plan, (Index) OUTER);
- fix_expr_references(plan, (Node *) plan->targetlist);
- fix_expr_references(plan, (Node *) plan->qual);
- fix_expr_references(plan, ((Result *) plan)->resconstantqual);
+ {
+ Result *splan = (Result *) plan;
+
+ /*
+ * Result may or may not have a subplan; if not, it's more
+ * like a scan node than an upper node.
+ *
+ * XXX why does Result use a different subvarno from Agg/Group?
+ */
+ if (splan->plan.lefttree != NULL)
+ set_upper_references(plan, (Index) OUTER, rtoffset);
+ else
+ {
+ splan->plan.targetlist =
+ fix_scan_list(splan->plan.targetlist, rtoffset);
+ splan->plan.qual =
+ fix_scan_list(splan->plan.qual, rtoffset);
+ }
+ /* resconstantqual can't contain any subplan variable refs */
+ splan->resconstantqual =
+ fix_scan_expr(splan->resconstantqual, rtoffset);
+ }
break;
case T_Append:
-
- /*
- * Append, like Sort et al, doesn't actually evaluate its
- * targetlist or check quals, and we haven't bothered to give it
- * its own tlist copy. So, don't fix targetlist/qual. But do
- * recurse into child plans.
- */
- Assert(plan->qual == NIL);
- foreach(l, ((Append *) plan)->appendplans)
- lfirst(l) = set_plan_references((Plan *) lfirst(l), rtable);
+ {
+ Append *splan = (Append *) plan;
+
+ /*
+ * Append, like Sort et al, doesn't actually evaluate its
+ * targetlist or check quals.
+ */
+ splan->plan.targetlist =
+ fix_scan_list(splan->plan.targetlist, rtoffset);
+ Assert(splan->plan.qual == NIL);
+ foreach(l, splan->appendplans)
+ {
+ lfirst(l) = set_plan_refs(glob,
+ (Plan *) lfirst(l),
+ rtoffset);
+ }
+ }
break;
case T_BitmapAnd:
- /* BitmapAnd works like Append, but has no tlist */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- foreach(l, ((BitmapAnd *) plan)->bitmapplans)
- lfirst(l) = set_plan_references((Plan *) lfirst(l), rtable);
+ {
+ BitmapAnd *splan = (BitmapAnd *) plan;
+
+ /* BitmapAnd works like Append, but has no tlist */
+ Assert(splan->plan.targetlist == NIL);
+ Assert(splan->plan.qual == NIL);
+ foreach(l, splan->bitmapplans)
+ {
+ lfirst(l) = set_plan_refs(glob,
+ (Plan *) lfirst(l),
+ rtoffset);
+ }
+ }
break;
case T_BitmapOr:
- /* BitmapOr works like Append, but has no tlist */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- foreach(l, ((BitmapOr *) plan)->bitmapplans)
- lfirst(l) = set_plan_references((Plan *) lfirst(l), rtable);
+ {
+ BitmapOr *splan = (BitmapOr *) plan;
+
+ /* BitmapOr works like Append, but has no tlist */
+ Assert(splan->plan.targetlist == NIL);
+ Assert(splan->plan.qual == NIL);
+ foreach(l, splan->bitmapplans)
+ {
+ lfirst(l) = set_plan_refs(glob,
+ (Plan *) lfirst(l),
+ rtoffset);
+ }
+ }
break;
default:
elog(ERROR, "unrecognized node type: %d",
}
/*
- * Now recurse into child plans and initplans, if any
+ * Now recurse into child plans, if any
*
* NOTE: it is essential that we recurse into child plans AFTER we set
* subplan references in this plan's tlist and quals. If we did the
* reference-adjustments bottom-up, then we would fail to match this
* plan's var nodes against the already-modified nodes of the children.
- * Fortunately, that consideration doesn't apply to SubPlan nodes; else
- * we'd need two passes over the expression trees.
*/
- plan->lefttree = set_plan_references(plan->lefttree, rtable);
- plan->righttree = set_plan_references(plan->righttree, rtable);
-
- foreach(l, plan->initPlan)
- {
- SubPlan *sp = (SubPlan *) lfirst(l);
-
- Assert(IsA(sp, SubPlan));
- sp->plan = set_plan_references(sp->plan, sp->rtable);
- }
+ plan->lefttree = set_plan_refs(glob, plan->lefttree, rtoffset);
+ plan->righttree = set_plan_refs(glob, plan->righttree, rtoffset);
return plan;
}
* to do the normal processing on it.
*/
static Plan *
-set_subqueryscan_references(SubqueryScan *plan, List *rtable)
+set_subqueryscan_references(PlannerGlobal *glob,
+ SubqueryScan *plan,
+ int rtoffset)
{
Plan *result;
- RangeTblEntry *rte;
- ListCell *l;
/* First, recursively process the subplan */
- rte = rt_fetch(plan->scan.scanrelid, rtable);
- Assert(rte->rtekind == RTE_SUBQUERY);
- plan->subplan = set_plan_references(plan->subplan,
- rte->subquery->rtable);
-
- /*
- * We have to process any initplans too; set_plan_references can't do it
- * for us because of the possibility of double-processing.
- */
- foreach(l, plan->scan.plan.initPlan)
- {
- SubPlan *sp = (SubPlan *) lfirst(l);
+ plan->subplan = set_plan_references(glob, plan->subplan, plan->subrtable);
- Assert(IsA(sp, SubPlan));
- sp->plan = set_plan_references(sp->plan, sp->rtable);
- }
+ /* subrtable is no longer needed in the plan tree */
+ plan->subrtable = NIL;
if (trivial_subqueryscan(plan))
{
/*
- * We can omit the SubqueryScan node and just pull up the subplan. We
- * have to merge its rtable into the outer rtable, which means
- * adjusting varnos throughout the subtree.
+ * We can omit the SubqueryScan node and just pull up the subplan.
*/
- int rtoffset = list_length(rtable);
- List *sub_rtable;
ListCell *lp,
*lc;
- sub_rtable = copyObject(rte->subquery->rtable);
- rtable = list_concat(rtable, sub_rtable);
-
- /*
- * we have to copy the subplan to make sure there are no duplicately
- * linked nodes in it, else adjust_plan_varnos might increment some
- * varnos twice
- */
- result = copyObject(plan->subplan);
-
- adjust_plan_varnos(result, rtoffset);
+ result = plan->subplan;
+ /* We have to be sure we don't lose any initplans */
result->initPlan = list_concat(plan->scan.plan.initPlan,
result->initPlan);
/*
* Keep the SubqueryScan node. We have to do the processing that
* set_plan_references would otherwise have done on it. Notice we do
- * not do set_uppernode_references() here, because a SubqueryScan will
+ * not do set_upper_references() here, because a SubqueryScan will
* always have been created with correct references to its subplan's
* outputs to begin with.
*/
- result = (Plan *) plan;
+ plan->scan.scanrelid += rtoffset;
+ plan->scan.plan.targetlist =
+ fix_scan_list(plan->scan.plan.targetlist, rtoffset);
+ plan->scan.plan.qual =
+ fix_scan_list(plan->scan.plan.qual, rtoffset);
- fix_expr_references(result, (Node *) result->targetlist);
- fix_expr_references(result, (Node *) result->qual);
+ result = (Plan *) plan;
}
return result;
}
/*
- * adjust_plan_varnos
- * Offset varnos and other rangetable indexes in a plan tree by rtoffset.
- */
-static void
-adjust_plan_varnos(Plan *plan, int rtoffset)
-{
- ListCell *l;
-
- if (plan == NULL)
- return;
-
- /*
- * Plan-type-specific fixes
- */
- switch (nodeTag(plan))
- {
- case T_SeqScan:
- ((SeqScan *) plan)->scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- break;
- case T_IndexScan:
- ((IndexScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((IndexScan *) plan)->indexqual,
- rtoffset);
- adjust_expr_varnos((Node *) ((IndexScan *) plan)->indexqualorig,
- rtoffset);
- break;
- case T_BitmapIndexScan:
- ((BitmapIndexScan *) plan)->scan.scanrelid += rtoffset;
- /* no need to fix targetlist and qual */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- adjust_expr_varnos((Node *) ((BitmapIndexScan *) plan)->indexqual,
- rtoffset);
- adjust_expr_varnos((Node *) ((BitmapIndexScan *) plan)->indexqualorig,
- rtoffset);
- break;
- case T_BitmapHeapScan:
- ((BitmapHeapScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((BitmapHeapScan *) plan)->bitmapqualorig,
- rtoffset);
- break;
- case T_TidScan:
- ((TidScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((TidScan *) plan)->tidquals,
- rtoffset);
- break;
- case T_SubqueryScan:
- ((SubqueryScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- /* we should not recurse into the subquery! */
- break;
- case T_FunctionScan:
- ((FunctionScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos(((FunctionScan *) plan)->funcexpr,
- rtoffset);
- break;
- case T_ValuesScan:
- ((ValuesScan *) plan)->scan.scanrelid += rtoffset;
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((ValuesScan *) plan)->values_lists,
- rtoffset);
- break;
- case T_NestLoop:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((Join *) plan)->joinqual, rtoffset);
- break;
- case T_MergeJoin:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((Join *) plan)->joinqual, rtoffset);
- adjust_expr_varnos((Node *) ((MergeJoin *) plan)->mergeclauses,
- rtoffset);
- break;
- case T_HashJoin:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos((Node *) ((Join *) plan)->joinqual, rtoffset);
- adjust_expr_varnos((Node *) ((HashJoin *) plan)->hashclauses,
- rtoffset);
- break;
- case T_Hash:
- case T_Material:
- case T_Sort:
- case T_Unique:
- case T_SetOp:
-
- /*
- * Even though the targetlist won't be used by the executor, we
- * fix it up for possible use by EXPLAIN (not to mention ease of
- * debugging --- wrong varnos are very confusing).
- */
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- Assert(plan->qual == NIL);
- break;
- case T_Limit:
-
- /*
- * Like the plan types above, Limit doesn't evaluate its tlist or
- * quals. It does have live expressions for limit/offset,
- * however.
- */
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- Assert(plan->qual == NIL);
- adjust_expr_varnos(((Limit *) plan)->limitOffset, rtoffset);
- adjust_expr_varnos(((Limit *) plan)->limitCount, rtoffset);
- break;
- case T_Agg:
- case T_Group:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- break;
- case T_Result:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- adjust_expr_varnos((Node *) plan->qual, rtoffset);
- adjust_expr_varnos(((Result *) plan)->resconstantqual, rtoffset);
- break;
- case T_Append:
- adjust_expr_varnos((Node *) plan->targetlist, rtoffset);
- Assert(plan->qual == NIL);
- foreach(l, ((Append *) plan)->appendplans)
- adjust_plan_varnos((Plan *) lfirst(l), rtoffset);
- break;
- case T_BitmapAnd:
- /* BitmapAnd works like Append, but has no tlist */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- foreach(l, ((BitmapAnd *) plan)->bitmapplans)
- adjust_plan_varnos((Plan *) lfirst(l), rtoffset);
- break;
- case T_BitmapOr:
- /* BitmapOr works like Append, but has no tlist */
- Assert(plan->targetlist == NIL);
- Assert(plan->qual == NIL);
- foreach(l, ((BitmapOr *) plan)->bitmapplans)
- adjust_plan_varnos((Plan *) lfirst(l), rtoffset);
- break;
- default:
- elog(ERROR, "unrecognized node type: %d",
- (int) nodeTag(plan));
- break;
- }
-
- /*
- * Now recurse into child plans.
- *
- * We don't need to (and in fact mustn't) recurse into subqueries, so no
- * need to examine initPlan list.
- */
- adjust_plan_varnos(plan->lefttree, rtoffset);
- adjust_plan_varnos(plan->righttree, rtoffset);
-}
-
-/*
- * adjust_expr_varnos
- * Offset varnos of Vars in an expression by rtoffset.
+ * fix_scan_expr
+ * Do set_plan_references processing on a scan-level expression
*
- * This is different from the rewriter's OffsetVarNodes in that it has to
- * work on an already-planned expression tree; in particular, we should not
- * disturb INNER and OUTER references. On the other hand, we don't have to
- * recurse into subqueries nor deal with outer-level Vars, so it's pretty
- * simple.
+ * This consists of incrementing all Vars' varnos by rtoffset and
+ * looking up operator opcode info for OpExpr and related nodes.
*/
-static void
-adjust_expr_varnos(Node *node, int rtoffset)
+static Node *
+fix_scan_expr(Node *node, int rtoffset)
{
- /* This tree walk requires no special setup, so away we go... */
- adjust_expr_varnos_walker(node, &rtoffset);
+ fix_scan_expr_context context;
+
+ context.rtoffset = rtoffset;
+ return fix_scan_expr_mutator(node, &context);
}
-static bool
-adjust_expr_varnos_walker(Node *node, int *context)
+static Node *
+fix_scan_expr_mutator(Node *node, fix_scan_expr_context *context)
{
if (node == NULL)
- return false;
+ return NULL;
if (IsA(node, Var))
{
- Var *var = (Var *) node;
+ Var *var = (Var *) copyObject(node);
Assert(var->varlevelsup == 0);
- if (var->varno > 0 && var->varno != INNER && var->varno != OUTER)
- var->varno += *context;
+ /*
+ * We should not see any Vars marked INNER, but in a nestloop inner
+ * scan there could be OUTER Vars. Leave them alone.
+ */
+ Assert(var->varno != INNER);
+ if (var->varno > 0 && var->varno != OUTER)
+ var->varno += context->rtoffset;
if (var->varnoold > 0)
- var->varnoold += *context;
- return false;
+ var->varnoold += context->rtoffset;
+ return (Node *) var;
}
- return expression_tree_walker(node, adjust_expr_varnos_walker,
- (void *) context);
-}
-
-/*
- * fix_expr_references
- * Do final cleanup on expressions (targetlists or quals).
- *
- * This consists of looking up operator opcode info for OpExpr nodes
- * and recursively performing set_plan_references on subplans.
- *
- * The Plan argument is currently unused, but might be needed again someday.
- */
-static void
-fix_expr_references(Plan *plan, Node *node)
-{
- /* This tree walk requires no special setup, so away we go... */
- fix_expr_references_walker(node, NULL);
-}
-
-static bool
-fix_expr_references_walker(Node *node, void *context)
-{
- if (node == NULL)
- return false;
+ /*
+ * Since we update opcode info in-place, this part could possibly
+ * scribble on the planner's input data structures, but it's OK.
+ */
if (IsA(node, OpExpr))
set_opfuncid((OpExpr *) node);
else if (IsA(node, DistinctExpr))
set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
- else if (IsA(node, ScalarArrayOpExpr))
- set_sa_opfuncid((ScalarArrayOpExpr *) node);
else if (IsA(node, NullIfExpr))
set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
- else if (IsA(node, SubPlan))
- {
- SubPlan *sp = (SubPlan *) node;
-
- sp->plan = set_plan_references(sp->plan, sp->rtable);
- }
- return expression_tree_walker(node, fix_expr_references_walker, context);
+ else if (IsA(node, ScalarArrayOpExpr))
+ set_sa_opfuncid((ScalarArrayOpExpr *) node);
+ return expression_tree_mutator(node, fix_scan_expr_mutator,
+ (void *) context);
}
/*
* set_join_references
- * Modifies the target list and quals of a join node to reference its
+ * Modify the target list and quals of a join node to reference its
* subplans, by setting the varnos to OUTER or INNER and setting attno
* values to the result domain number of either the corresponding outer
- * or inner join tuple item.
+ * or inner join tuple item. Also perform opcode lookup for these
+ * expressions.
*
* In the case of a nestloop with inner indexscan, we will also need to
* apply the same transformation to any outer vars appearing in the
* quals of the child indexscan. set_inner_join_references does that.
- *
- * 'join' is a join plan node
*/
static void
-set_join_references(Join *join)
+set_join_references(Join *join, int rtoffset)
{
Plan *outer_plan = join->plan.lefttree;
Plan *inner_plan = join->plan.righttree;
inner_itlist = build_tlist_index(inner_plan->targetlist);
/* All join plans have tlist, qual, and joinqual */
- join->plan.targetlist = join_references(join->plan.targetlist,
- outer_itlist,
- inner_itlist,
- (Index) 0);
- join->plan.qual = join_references(join->plan.qual,
- outer_itlist,
- inner_itlist,
- (Index) 0);
- join->joinqual = join_references(join->joinqual,
- outer_itlist,
- inner_itlist,
- (Index) 0);
+ join->plan.targetlist = fix_join_expr(join->plan.targetlist,
+ outer_itlist,
+ inner_itlist,
+ (Index) 0,
+ rtoffset);
+ join->plan.qual = fix_join_expr(join->plan.qual,
+ outer_itlist,
+ inner_itlist,
+ (Index) 0,
+ rtoffset);
+ join->joinqual = fix_join_expr(join->joinqual,
+ outer_itlist,
+ inner_itlist,
+ (Index) 0,
+ rtoffset);
/* Now do join-type-specific stuff */
if (IsA(join, NestLoop))
{
/* This processing is split out to handle possible recursion */
- set_inner_join_references(inner_plan,
- outer_itlist);
+ set_inner_join_references(inner_plan, outer_itlist);
}
else if (IsA(join, MergeJoin))
{
MergeJoin *mj = (MergeJoin *) join;
- mj->mergeclauses = join_references(mj->mergeclauses,
- outer_itlist,
- inner_itlist,
- (Index) 0);
+ mj->mergeclauses = fix_join_expr(mj->mergeclauses,
+ outer_itlist,
+ inner_itlist,
+ (Index) 0,
+ rtoffset);
}
else if (IsA(join, HashJoin))
{
HashJoin *hj = (HashJoin *) join;
- hj->hashclauses = join_references(hj->hashclauses,
- outer_itlist,
- inner_itlist,
- (Index) 0);
+ hj->hashclauses = fix_join_expr(hj->hashclauses,
+ outer_itlist,
+ inner_itlist,
+ (Index) 0,
+ rtoffset);
}
pfree(outer_itlist);
* to the bottom BitmapIndexScan nodes; likewise, appendrel indexscans
* require recursing through Append nodes. This is split out as a separate
* function so that it can recurse.
+ *
+ * Note we do *not* apply any rtoffset for non-join Vars; this is because
+ * the quals will be processed again by fix_scan_expr when the set_plan_refs
+ * recursion reaches the inner indexscan, and so we'd have done it twice.
*/
static void
set_inner_join_references(Plan *inner_plan, indexed_tlist *outer_itlist)
Index innerrel = innerscan->scan.scanrelid;
/* only refs to outer vars get changed in the inner qual */
- innerscan->indexqualorig = join_references(indexqualorig,
- outer_itlist,
- NULL,
- innerrel);
- innerscan->indexqual = join_references(innerscan->indexqual,
- outer_itlist,
- NULL,
- innerrel);
+ innerscan->indexqualorig = fix_join_expr(indexqualorig,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
+ innerscan->indexqual = fix_join_expr(innerscan->indexqual,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
/*
* We must fix the inner qpqual too, if it has join clauses (this
* may get rechecked as qpquals).
*/
if (NumRelids((Node *) inner_plan->qual) > 1)
- inner_plan->qual = join_references(inner_plan->qual,
- outer_itlist,
- NULL,
- innerrel);
+ inner_plan->qual = fix_join_expr(inner_plan->qual,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
}
}
else if (IsA(inner_plan, BitmapIndexScan))
Index innerrel = innerscan->scan.scanrelid;
/* only refs to outer vars get changed in the inner qual */
- innerscan->indexqualorig = join_references(indexqualorig,
- outer_itlist,
- NULL,
- innerrel);
- innerscan->indexqual = join_references(innerscan->indexqual,
- outer_itlist,
- NULL,
- innerrel);
+ innerscan->indexqualorig = fix_join_expr(indexqualorig,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
+ innerscan->indexqual = fix_join_expr(innerscan->indexqual,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
/* no need to fix inner qpqual */
Assert(inner_plan->qual == NIL);
}
/* only refs to outer vars get changed in the inner qual */
if (NumRelids((Node *) bitmapqualorig) > 1)
- innerscan->bitmapqualorig = join_references(bitmapqualorig,
- outer_itlist,
- NULL,
- innerrel);
+ innerscan->bitmapqualorig = fix_join_expr(bitmapqualorig,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
/*
* We must fix the inner qpqual too, if it has join clauses (this
* get rechecked as qpquals).
*/
if (NumRelids((Node *) inner_plan->qual) > 1)
- inner_plan->qual = join_references(inner_plan->qual,
- outer_itlist,
- NULL,
- innerrel);
+ inner_plan->qual = fix_join_expr(inner_plan->qual,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
/* Now recurse */
- set_inner_join_references(inner_plan->lefttree,
- outer_itlist);
+ set_inner_join_references(inner_plan->lefttree, outer_itlist);
}
else if (IsA(inner_plan, BitmapAnd))
{
foreach(l, innerscan->bitmapplans)
{
- set_inner_join_references((Plan *) lfirst(l),
- outer_itlist);
+ set_inner_join_references((Plan *) lfirst(l), outer_itlist);
}
}
else if (IsA(inner_plan, BitmapOr))
foreach(l, innerscan->bitmapplans)
{
- set_inner_join_references((Plan *) lfirst(l),
- outer_itlist);
+ set_inner_join_references((Plan *) lfirst(l), outer_itlist);
}
}
+ else if (IsA(inner_plan, TidScan))
+ {
+ TidScan *innerscan = (TidScan *) inner_plan;
+ Index innerrel = innerscan->scan.scanrelid;
+
+ innerscan->tidquals = fix_join_expr(innerscan->tidquals,
+ outer_itlist,
+ NULL,
+ innerrel,
+ 0);
+ }
else if (IsA(inner_plan, Append))
{
/*
foreach(l, appendplan->appendplans)
{
- set_inner_join_references((Plan *) lfirst(l),
- outer_itlist);
+ set_inner_join_references((Plan *) lfirst(l), outer_itlist);
}
}
else if (IsA(inner_plan, Result))
if (result->plan.lefttree)
set_inner_join_references(result->plan.lefttree, outer_itlist);
}
- else if (IsA(inner_plan, TidScan))
- {
- TidScan *innerscan = (TidScan *) inner_plan;
- Index innerrel = innerscan->scan.scanrelid;
-
- innerscan->tidquals = join_references(innerscan->tidquals,
- outer_itlist,
- NULL,
- innerrel);
- }
}
/*
- * set_uppernode_references
+ * set_upper_references
* Update the targetlist and quals of an upper-level plan node
* to refer to the tuples returned by its lefttree subplan.
+ * Also perform opcode lookup for these expressions.
*
* This is used for single-input plan types like Agg, Group, Result.
*
* the expression.
*/
static void
-set_uppernode_references(Plan *plan, Index subvarno)
+set_upper_references(Plan *plan, Index subvarno, int rtoffset)
{
Plan *subplan = plan->lefttree;
indexed_tlist *subplan_itlist;
TargetEntry *tle = (TargetEntry *) lfirst(l);
Node *newexpr;
- newexpr = replace_vars_with_subplan_refs((Node *) tle->expr,
- subplan_itlist,
- subvarno);
+ newexpr = fix_upper_expr((Node *) tle->expr,
+ subplan_itlist,
+ subvarno,
+ rtoffset);
tle = flatCopyTargetEntry(tle);
tle->expr = (Expr *) newexpr;
output_targetlist = lappend(output_targetlist, tle);
plan->targetlist = output_targetlist;
plan->qual = (List *)
- replace_vars_with_subplan_refs((Node *) plan->qual,
- subplan_itlist,
- subvarno);
+ fix_upper_expr((Node *) plan->qual,
+ subplan_itlist,
+ subvarno,
+ rtoffset);
pfree(subplan_itlist);
}
*
* If a match is found, return a copy of the given Var with suitably
* modified varno/varattno (to wit, newvarno and the resno of the TLE entry).
+ * Also ensure that varnoold is incremented by rtoffset.
* If no match, return NULL.
*/
static Var *
-search_indexed_tlist_for_var(Var *var, indexed_tlist *itlist, Index newvarno)
+search_indexed_tlist_for_var(Var *var, indexed_tlist *itlist,
+ Index newvarno, int rtoffset)
{
Index varno = var->varno;
AttrNumber varattno = var->varattno;
newvar->varno = newvarno;
newvar->varattno = vinfo->resno;
+ if (newvar->varnoold > 0)
+ newvar->varnoold += rtoffset;
return newvar;
}
vinfo++;
}
/*
- * join_references
- * Creates a new set of targetlist entries or join qual clauses by
+ * fix_join_expr
+ * Create a new set of targetlist entries or join qual clauses by
* changing the varno/varattno values of variables in the clauses
* to reference target list values from the outer and inner join
- * relation target lists.
+ * relation target lists. Also perform opcode lookup.
*
* This is used in two different scenarios: a normal join clause, where
* all the Vars in the clause *must* be replaced by OUTER or INNER references;
* and an indexscan being used on the inner side of a nestloop join.
* In the latter case we want to replace the outer-relation Vars by OUTER
- * references, but not touch the Vars of the inner relation. (We also
- * implement RETURNING clause fixup using this second scenario.)
+ * references, while Vars of the inner relation should be adjusted by rtoffset.
+ * (We also implement RETURNING clause fixup using this second scenario.)
*
* For a normal join, acceptable_rel should be zero so that any failure to
* match a Var will be reported as an error. For the indexscan case,
- * pass inner_itlist = NULL and acceptable_rel = the ID of the inner relation.
+ * pass inner_itlist = NULL and acceptable_rel = the (not-offseted-yet) ID
+ * of the inner relation.
*
* 'clauses' is the targetlist or list of join clauses
* 'outer_itlist' is the indexed target list of the outer join relation
* or NULL
* 'acceptable_rel' is either zero or the rangetable index of a relation
* whose Vars may appear in the clause without provoking an error.
+ * 'rtoffset' is what to add to varno for Vars of acceptable_rel.
*
* Returns the new expression tree. The original clause structure is
* not modified.
*/
static List *
-join_references(List *clauses,
- indexed_tlist *outer_itlist,
- indexed_tlist *inner_itlist,
- Index acceptable_rel)
+fix_join_expr(List *clauses,
+ indexed_tlist *outer_itlist,
+ indexed_tlist *inner_itlist,
+ Index acceptable_rel,
+ int rtoffset)
{
- join_references_context context;
+ fix_join_expr_context context;
context.outer_itlist = outer_itlist;
context.inner_itlist = inner_itlist;
context.acceptable_rel = acceptable_rel;
- return (List *) join_references_mutator((Node *) clauses, &context);
+ context.rtoffset = rtoffset;
+ return (List *) fix_join_expr_mutator((Node *) clauses, &context);
}
static Node *
-join_references_mutator(Node *node,
- join_references_context *context)
+fix_join_expr_mutator(Node *node, fix_join_expr_context *context)
{
Var *newvar;
/* First look for the var in the input tlists */
newvar = search_indexed_tlist_for_var(var,
context->outer_itlist,
- OUTER);
+ OUTER,
+ context->rtoffset);
if (newvar)
return (Node *) newvar;
if (context->inner_itlist)
{
newvar = search_indexed_tlist_for_var(var,
context->inner_itlist,
- INNER);
+ INNER,
+ context->rtoffset);
if (newvar)
return (Node *) newvar;
}
- /* Return the Var unmodified, if it's for acceptable_rel */
+ /* If it's for acceptable_rel, adjust and return it */
if (var->varno == context->acceptable_rel)
- return (Node *) copyObject(var);
+ {
+ var = (Var *) copyObject(var);
+ var->varno += context->rtoffset;
+ var->varnoold += context->rtoffset;
+ return (Node *) var;
+ }
/* No referent found for Var */
elog(ERROR, "variable not found in subplan target lists");
if (newvar)
return (Node *) newvar;
}
+ /*
+ * Since we update opcode info in-place, this part could possibly
+ * scribble on the planner's input data structures, but it's OK.
+ */
+ if (IsA(node, OpExpr))
+ set_opfuncid((OpExpr *) node);
+ else if (IsA(node, DistinctExpr))
+ set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
+ else if (IsA(node, NullIfExpr))
+ set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
+ else if (IsA(node, ScalarArrayOpExpr))
+ set_sa_opfuncid((ScalarArrayOpExpr *) node);
return expression_tree_mutator(node,
- join_references_mutator,
+ fix_join_expr_mutator,
(void *) context);
}
/*
- * replace_vars_with_subplan_refs
- * This routine modifies an expression tree so that all Var nodes
- * reference target nodes of a subplan. It is used to fix up
- * target and qual expressions of non-join upper-level plan nodes.
+ * fix_upper_expr
+ * Modifies an expression tree so that all Var nodes reference outputs
+ * of a subplan. Also performs opcode lookup.
+ *
+ * This is used to fix up target and qual expressions of non-join upper-level
+ * plan nodes.
*
* An error is raised if no matching var can be found in the subplan tlist
* --- so this routine should only be applied to nodes whose subplans'
* 'node': the tree to be fixed (a target item or qual)
* 'subplan_itlist': indexed target list for subplan
* 'subvarno': varno to be assigned to all Vars
+ * 'rtoffset': how much to increment varnoold by
*
* The resulting tree is a copy of the original in which all Var nodes have
* varno = subvarno, varattno = resno of corresponding subplan target.
* The original tree is not modified.
*/
static Node *
-replace_vars_with_subplan_refs(Node *node,
- indexed_tlist *subplan_itlist,
- Index subvarno)
+fix_upper_expr(Node *node,
+ indexed_tlist *subplan_itlist,
+ Index subvarno,
+ int rtoffset)
{
- replace_vars_with_subplan_refs_context context;
+ fix_upper_expr_context context;
context.subplan_itlist = subplan_itlist;
context.subvarno = subvarno;
- return replace_vars_with_subplan_refs_mutator(node, &context);
+ context.rtoffset = rtoffset;
+ return fix_upper_expr_mutator(node, &context);
}
static Node *
-replace_vars_with_subplan_refs_mutator(Node *node,
- replace_vars_with_subplan_refs_context *context)
+fix_upper_expr_mutator(Node *node, fix_upper_expr_context *context)
{
Var *newvar;
newvar = search_indexed_tlist_for_var(var,
context->subplan_itlist,
- context->subvarno);
+ context->subvarno,
+ context->rtoffset);
if (!newvar)
elog(ERROR, "variable not found in subplan target list");
return (Node *) newvar;
if (newvar)
return (Node *) newvar;
}
+ /*
+ * Since we update opcode info in-place, this part could possibly
+ * scribble on the planner's input data structures, but it's OK.
+ */
+ if (IsA(node, OpExpr))
+ set_opfuncid((OpExpr *) node);
+ else if (IsA(node, DistinctExpr))
+ set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
+ else if (IsA(node, NullIfExpr))
+ set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
+ else if (IsA(node, ScalarArrayOpExpr))
+ set_sa_opfuncid((ScalarArrayOpExpr *) node);
return expression_tree_mutator(node,
- replace_vars_with_subplan_refs_mutator,
+ fix_upper_expr_mutator,
(void *) context);
}
* adjusted RETURNING list, result-table Vars will still have their
* original varno, but Vars for other rels will have varno OUTER.
*
- * We also must apply fix_expr_references to the list.
+ * We also must perform opcode lookup.
*
* 'rlist': the RETURNING targetlist to be fixed
* 'topplan': the top Plan node for the query (not yet passed through
* set_plan_references)
- * 'resultRelation': RT index of the query's result relation
+ * 'resultRelation': RT index of the associated result relation
+ *
+ * Note: we assume that result relations will have rtoffset zero, that is,
+ * they are not coming from a subplan.
*/
List *
set_returning_clause_references(List *rlist,
indexed_tlist *itlist;
/*
- * We can perform the desired Var fixup by abusing the join_references
+ * We can perform the desired Var fixup by abusing the fix_join_expr
* machinery that normally handles inner indexscan fixup. We search the
* top plan's targetlist for Vars of non-result relations, and use
- * join_references to convert RETURNING Vars into references to those
+ * fix_join_expr to convert RETURNING Vars into references to those
* tlist entries, while leaving result-rel Vars as-is.
*/
itlist = build_tlist_index_other_vars(topplan->targetlist, resultRelation);
- rlist = join_references(rlist,
- itlist,
- NULL,
- resultRelation);
-
- fix_expr_references(topplan, (Node *) rlist);
+ rlist = fix_join_expr(rlist,
+ itlist,
+ NULL,
+ resultRelation,
+ 0);
pfree(itlist);
set_opfuncid((OpExpr *) node);
else if (IsA(node, DistinctExpr))
set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
- else if (IsA(node, ScalarArrayOpExpr))
- set_sa_opfuncid((ScalarArrayOpExpr *) node);
else if (IsA(node, NullIfExpr))
set_opfuncid((OpExpr *) node); /* rely on struct equivalence */
+ else if (IsA(node, ScalarArrayOpExpr))
+ set_sa_opfuncid((ScalarArrayOpExpr *) node);
return expression_tree_walker(node, fix_opfuncids_walker, context);
}
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.120 2007/02/19 07:03:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.121 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
typedef struct finalize_primnode_context
{
+ PlannerInfo *root;
Bitmapset *paramids; /* Set of PARAM_EXEC paramids found */
Bitmapset *outer_params; /* Set of accessible outer paramids */
} finalize_primnode_context;
List **righthandIds);
static Node *convert_testexpr_mutator(Node *node,
convert_testexpr_context *context);
-static bool subplan_is_hashable(SubLink *slink, SubPlan *node);
+static bool subplan_is_hashable(SubLink *slink, SubPlan *node, Plan *plan);
static bool hash_ok_operator(OpExpr *expr);
static Node *replace_correlation_vars_mutator(Node *node, PlannerInfo *root);
static Node *process_sublinks_mutator(Node *node,
process_sublinks_context *context);
-static Bitmapset *finalize_plan(Plan *plan, List *rtable,
+static Bitmapset *finalize_plan(PlannerInfo *root,
+ Plan *plan,
Bitmapset *outer_params,
Bitmapset *valid_params);
static bool finalize_primnode(Node *node, finalize_primnode_context *context);
return retval;
}
+/*
+ * Get the datatype of the first column of the plan's output.
+ *
+ * This is a hack to support exprType(), which doesn't have any way to get
+ * at the plan associated with a SubPlan node. We really only need the value
+ * for EXPR_SUBLINK and ARRAY_SUBLINK subplans, but for consistency we set
+ * it always.
+ */
+static Oid
+get_first_col_type(Plan *plan)
+{
+ TargetEntry *tent = (TargetEntry *) linitial(plan->targetlist);
+
+ Assert(IsA(tent, TargetEntry));
+ Assert(!tent->resjunk);
+ return exprType((Node *) tent->expr);
+}
+
/*
* Convert a SubLink (as created by the parser) into a SubPlan.
*
static Node *
make_subplan(PlannerInfo *root, SubLink *slink, Node *testexpr, bool isTopQual)
{
- SubPlan *node = makeNode(SubPlan);
Query *subquery = (Query *) (slink->subselect);
double tuple_fraction;
+ SubPlan *node;
Plan *plan;
+ PlannerInfo *subroot;
Bitmapset *tmpset;
int paramid;
Node *result;
/*
* Generate the plan for the subquery.
*/
- node->plan = plan = subquery_planner(root->glob, subquery,
- root->query_level + 1,
- tuple_fraction,
- NULL);
-
- /* Assign quasi-unique ID to this SubPlan */
- node->plan_id = root->glob->next_plan_id++;
-
- node->rtable = subquery->rtable;
+ plan = subquery_planner(root->glob, subquery,
+ root->query_level + 1,
+ tuple_fraction,
+ &subroot);
/*
- * Initialize other fields of the SubPlan node.
+ * Initialize the SubPlan node. Note plan_id isn't set yet.
*/
+ node = makeNode(SubPlan);
node->subLinkType = slink->subLinkType;
node->testexpr = NULL;
node->paramIds = NIL;
+ node->firstColType = get_first_col_type(plan);
node->useHashTable = false;
/* At top level of a qual, can treat UNKNOWN the same as FALSE */
node->unknownEqFalse = isTopQual;
* tuple. But if it's an IN (= ANY) test, we might be able to use a
* hashtable to avoid comparing all the tuples.
*/
- if (subplan_is_hashable(slink, node))
+ if (subplan_is_hashable(slink, node, plan))
node->useHashTable = true;
/*
break;
}
if (use_material)
- node->plan = plan = materialize_finished_plan(plan);
+ plan = materialize_finished_plan(plan);
}
/*
result = (Node *) node;
}
+ /*
+ * Add the subplan and its rtable to the global lists.
+ */
+ root->glob->subplans = lappend(root->glob->subplans,
+ plan);
+ root->glob->subrtables = lappend(root->glob->subrtables,
+ subroot->parse->rtable);
+ node->plan_id = list_length(root->glob->subplans);
+
return result;
}
* on its plan and parParam fields, however.
*/
static bool
-subplan_is_hashable(SubLink *slink, SubPlan *node)
+subplan_is_hashable(SubLink *slink, SubPlan *node, Plan *plan)
{
double subquery_size;
ListCell *l;
* actually be stored as MinimalTuples; this provides some fudge factor
* for hashtable overhead.)
*/
- subquery_size = node->plan->plan_rows *
- (MAXALIGN(node->plan->plan_width) + MAXALIGN(sizeof(HeapTupleHeaderData)));
+ subquery_size = plan->plan_rows *
+ (MAXALIGN(plan->plan_width) + MAXALIGN(sizeof(HeapTupleHeaderData)));
if (subquery_size > work_mem * 1024L)
return false;
/*
* Now recurse through plan tree.
*/
- (void) finalize_plan(plan, root->parse->rtable, outer_params, valid_params);
+ (void) finalize_plan(root, plan, outer_params, valid_params);
bms_free(outer_params);
bms_free(valid_params);
initplan_cost = 0;
foreach(l, plan->initPlan)
{
- SubPlan *initplan = (SubPlan *) lfirst(l);
+ SubPlan *initsubplan = (SubPlan *) lfirst(l);
+ Plan *initplan = planner_subplan_get_plan(root, initsubplan);
ListCell *l2;
- initExtParam = bms_add_members(initExtParam,
- initplan->plan->extParam);
- foreach(l2, initplan->setParam)
+ initExtParam = bms_add_members(initExtParam, initplan->extParam);
+ foreach(l2, initsubplan->setParam)
{
initSetParam = bms_add_member(initSetParam, lfirst_int(l2));
}
- initplan_cost += initplan->plan->total_cost;
+ initplan_cost += initplan->total_cost;
}
/* allParam must include all these params */
plan->allParam = bms_add_members(plan->allParam, initExtParam);
* This is just an internal notational convenience.
*/
static Bitmapset *
-finalize_plan(Plan *plan, List *rtable,
+finalize_plan(PlannerInfo *root, Plan *plan,
Bitmapset *outer_params, Bitmapset *valid_params)
{
finalize_primnode_context context;
if (plan == NULL)
return NULL;
+ context.root = root;
context.paramids = NULL; /* initialize set to empty */
context.outer_params = outer_params;
{
context.paramids =
bms_add_members(context.paramids,
- finalize_plan((Plan *) lfirst(l),
- rtable,
+ finalize_plan(root,
+ (Plan *) lfirst(l),
outer_params,
valid_params));
}
{
context.paramids =
bms_add_members(context.paramids,
- finalize_plan((Plan *) lfirst(l),
- rtable,
+ finalize_plan(root,
+ (Plan *) lfirst(l),
outer_params,
valid_params));
}
{
context.paramids =
bms_add_members(context.paramids,
- finalize_plan((Plan *) lfirst(l),
- rtable,
+ finalize_plan(root,
+ (Plan *) lfirst(l),
outer_params,
valid_params));
}
/* Process left and right child plans, if any */
context.paramids = bms_add_members(context.paramids,
- finalize_plan(plan->lefttree,
- rtable,
+ finalize_plan(root,
+ plan->lefttree,
outer_params,
valid_params));
context.paramids = bms_add_members(context.paramids,
- finalize_plan(plan->righttree,
- rtable,
+ finalize_plan(root,
+ plan->righttree,
outer_params,
valid_params));
if (is_subplan(node))
{
SubPlan *subplan = (SubPlan *) node;
+ Plan *plan = planner_subplan_get_plan(context->root, subplan);
/* Add outer-level params needed by the subplan to paramids */
context->paramids = bms_join(context->paramids,
- bms_intersect(subplan->plan->extParam,
+ bms_intersect(plan->extParam,
context->outer_params));
/* fall through to recurse into subplan args */
}
root->query_level--;
root->init_plans = saved_init_plans;
+ /*
+ * Add the subplan and its rtable to the global lists.
+ */
+ root->glob->subplans = lappend(root->glob->subplans,
+ plan);
+ root->glob->subrtables = lappend(root->glob->subrtables,
+ root->parse->rtable);
+
/*
* Create a SubPlan node and add it to the outer list of InitPlans.
*/
node = makeNode(SubPlan);
node->subLinkType = EXPR_SUBLINK;
- node->plan = plan;
- /* Assign quasi-unique ID to this SubPlan */
- node->plan_id = root->glob->next_plan_id++;
-
- node->rtable = root->parse->rtable;
+ node->firstColType = get_first_col_type(plan);
+ node->plan_id = list_length(root->glob->subplans);
root->init_plans = lappend(root->init_plans, node);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.138 2007/02/19 07:03:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.139 2007/02/22 22:00:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
RangeTblRef *rtr = (RangeTblRef *) setOp;
RangeTblEntry *rte = rt_fetch(rtr->rtindex, root->parse->rtable);
Query *subquery = rte->subquery;
+ PlannerInfo *subroot;
Plan *subplan,
*plan;
subplan = subquery_planner(root->glob, subquery,
root->query_level + 1,
tuple_fraction,
- NULL);
+ &subroot);
/*
* Add a SubqueryScan with the caller-requested targetlist
refnames_tlist),
NIL,
rtr->rtindex,
- subplan);
+ subplan,
+ subroot->parse->rtable);
/*
* We don't bother to determine the subquery's output ordering since
* output columns.
*
* XXX you don't really want to know about this: setrefs.c will apply
- * replace_vars_with_subplan_refs() to the Result node's tlist. This
+ * fix_upper_expr() to the Result node's tlist. This
* would fail if the Vars generated by generate_setop_tlist() were not
* exactly equal() to the corresponding tlist entries of the subplan.
* However, since the subplan was generated by generate_union_plan()
!tlist_same_datatypes(plan->targetlist, colTypes, junkOK))
{
plan = (Plan *)
- make_result(generate_setop_tlist(colTypes, flag,
+ make_result(root,
+ generate_setop_tlist(colTypes, flag,
0,
false,
plan->targetlist,
Assert(!IsA(node, SubLink));
Assert(!IsA(node, Query));
- /*
- * BUT: although we don't need to recurse into subplans, we do need to
- * make sure that they are copied, not just referenced as
- * expression_tree_mutator will do by default. Otherwise we'll have the
- * same subplan node referenced from each arm of the finished APPEND plan,
- * which will cause trouble in the executor. This is a kluge that should
- * go away when we redesign querytrees.
- */
- if (is_subplan(node))
- {
- SubPlan *subplan;
-
- /* Copy the node and process subplan args */
- node = expression_tree_mutator(node, adjust_appendrel_attrs_mutator,
- (void *) context);
- /* Make sure we have separate copies of subplan and its rtable */
- subplan = (SubPlan *) node;
- subplan->plan = copyObject(subplan->plan);
- subplan->rtable = copyObject(subplan->rtable);
- return node;
- }
-
return expression_tree_mutator(node, adjust_appendrel_attrs_mutator,
(void *) context);
}
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.235 2007/02/19 07:03:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.236 2007/02/22 22:00:24 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
*/
if (contain_subplans(param))
goto fail;
- cost_qual_eval(&eval_cost, list_make1(param));
+ cost_qual_eval(&eval_cost, list_make1(param), NULL);
if (eval_cost.startup + eval_cost.per_tuple >
10 * cpu_operator_cost)
goto fail;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.85 2007/01/20 20:45:40 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.86 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
rel->pages = 0;
rel->tuples = 0;
rel->subplan = NULL;
+ rel->subrtable = NIL;
rel->baserestrictinfo = NIL;
rel->baserestrictcost.startup = 0;
rel->baserestrictcost.per_tuple = 0;
joinrel->pages = 0;
joinrel->tuples = 0;
joinrel->subplan = NULL;
+ joinrel->subrtable = NIL;
joinrel->baserestrictinfo = NIL;
joinrel->baserestrictcost.startup = 0;
joinrel->baserestrictcost.per_tuple = 0;
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.211 2007/02/11 22:18:15 petere Exp $
+ * $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.212 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
subplan->subLinkType == ARRAY_SUBLINK)
{
/* get the type of the subselect's first target column */
- TargetEntry *tent;
-
- tent = (TargetEntry *) linitial(subplan->plan->targetlist);
- Assert(IsA(tent, TargetEntry));
- Assert(!tent->resjunk);
- type = exprType((Node *) tent->expr);
+ type = subplan->firstColType;
if (subplan->subLinkType == ARRAY_SUBLINK)
{
type = get_array_type(type);
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("could not find array type for data type %s",
- format_type_be(exprType((Node *) tent->expr)))));
+ format_type_be(subplan->firstColType))));
}
}
else
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.226 2007/02/19 07:03:31 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.227 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
* more expensive than it's worth, though, considering all the other
* inaccuracies here ...
*/
- cost_qual_eval(&index_qual_cost, indexQuals);
+ cost_qual_eval(&index_qual_cost, indexQuals, root);
qual_op_cost = cpu_operator_cost * list_length(indexQuals);
qual_arg_cost = index_qual_cost.startup +
index_qual_cost.per_tuple - qual_op_cost;
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.137 2007/02/20 17:32:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.138 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
ScanDirection direction, long count);
extern void ExecutorEnd(QueryDesc *queryDesc);
extern void ExecutorRewind(QueryDesc *queryDesc);
-extern void ExecCheckRTPerms(List *rangeTable);
extern void ExecEndPlan(PlanState *planstate, EState *estate);
extern bool ExecContextForcesOids(PlanState *planstate, bool *hasoids);
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.168 2007/02/20 17:32:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.169 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
ScanDirection es_direction; /* current scan direction */
Snapshot es_snapshot; /* time qual to use */
Snapshot es_crosscheck_snapshot; /* crosscheck time qual for RI */
- List *es_range_table; /* List of RangeTableEntrys */
+ List *es_range_table; /* List of RangeTblEntry */
/* Info about target table for insert/update/delete queries: */
ResultRelInfo *es_result_relations; /* array of ResultRelInfos */
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/plannodes.h,v 1.91 2007/02/20 17:32:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/plannodes.h,v 1.92 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
IntoClause *into; /* target for SELECT INTO / CREATE TABLE AS */
+ List *subplans; /* Plan trees for SubPlan expressions */
+
/*
* If the query has a returningList then the planner will store a list of
* processed targetlists (one per result relation) here. We must have a
int nParamExec; /* number of PARAM_EXEC Params used */
} PlannedStmt;
+/* macro for fetching the Plan associated with a SubPlan node */
+#define exec_subplan_get_plan(plannedstmt, subplan) \
+ ((Plan *) list_nth((plannedstmt)->subplans, (subplan)->plan_id - 1))
+
/* ----------------
* Plan node
* the generic lefttree field as you might expect. This is because we do
* not want plan-tree-traversal routines to recurse into the subplan without
* knowing that they are changing Query contexts.
+ *
+ * Note: subrtable is used just to carry the subquery rangetable from
+ * createplan.c to setrefs.c; it should always be NIL by the time the
+ * executor sees the plan.
* ----------------
*/
typedef struct SubqueryScan
{
Scan scan;
Plan *subplan;
+ List *subrtable; /* temporary workspace for planner */
} SubqueryScan;
/* ----------------
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.126 2007/02/20 17:32:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.127 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
* SubPlan - executable expression node for a subplan (sub-SELECT)
*
* The planner replaces SubLink nodes in expression trees with SubPlan
- * nodes after it has finished planning the subquery. SubPlan contains
- * a sub-plantree and rtable instead of a sub-Query.
+ * nodes after it has finished planning the subquery. SubPlan references
+ * a sub-plantree stored in the subplans list of the toplevel PlannedStmt.
+ * (We avoid a direct link to make it easier to copy expression trees
+ * without causing multiple processing of the subplan.)
*
* In an ordinary subplan, testexpr points to an executable expression
* (OpExpr, an AND/OR tree of OpExprs, or RowCompareExpr) for the combining
/* The combining operators, transformed to an executable expression: */
Node *testexpr; /* OpExpr or RowCompareExpr expression tree */
List *paramIds; /* IDs of Params embedded in the above */
- /* The subselect, transformed to a Plan: */
- struct Plan *plan; /* subselect plan itself */
- int plan_id; /* kluge because we haven't equal-funcs for
- * plan nodes... we compare this instead of
- * subselect plan */
- List *rtable; /* range table for subselect */
+ /* Identification of the Plan tree to use: */
+ int plan_id; /* Index (from 1) in PlannedStmt.subplans */
+ /* Extra data saved for the convenience of exprType(): */
+ Oid firstColType; /* Type of first column of subplan result */
/* Information about execution strategy: */
bool useHashTable; /* TRUE to store subselect output in a hash
* table (implies we are doing "IN") */
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/print.h,v 1.26 2007/01/05 22:19:56 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/print.h,v 1.27 2007/02/22 22:00:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
extern void print_pathkeys(List *pathkeys, List *rtable);
extern void print_tl(List *tlist, List *rtable);
extern void print_slot(TupleTableSlot *slot);
-extern void print_plan_recursive(Plan *p, Query *parsetree,
- int indentLevel, char *label);
-extern void print_plan(Plan *p, Query *parsetree);
#endif /* PRINT_H */
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.137 2007/02/20 17:32:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/relation.h,v 1.138 2007/02/22 22:00:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
List *paramlist; /* to keep track of cross-level Params */
- int next_plan_id; /* hack for distinguishing SubPlans */
+ List *subplans; /* Plans for SubPlan nodes */
+
+ List *subrtables; /* Rangetables for SubPlan nodes */
+
+ List *finalrtable; /* "flat" rangetable for executor */
} PlannerGlobal;
+/* macro for fetching the Plan associated with a SubPlan node */
+#define planner_subplan_get_plan(root, subplan) \
+ ((Plan *) list_nth((root)->glob->subplans, (subplan)->plan_id - 1))
+
/*----------
* PlannerInfo
* pages - number of disk pages in relation (zero if not a table)
* tuples - number of tuples in relation (not considering restrictions)
* subplan - plan for subquery (NULL if it's not a subquery)
+ * subrtable - rangetable for subquery (NIL if it's not a subquery)
*
* Note: for a subquery, tuples and subplan are not set immediately
* upon creation of the RelOptInfo object; they are filled in when
BlockNumber pages;
double tuples;
struct Plan *subplan; /* if subquery */
+ List *subrtable; /* if subquery */
/* used by various scans and joins: */
List *baserestrictinfo; /* RestrictInfo structures (if base
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/optimizer/cost.h,v 1.84 2007/01/22 01:35:22 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/optimizer/cost.h,v 1.85 2007/02/22 22:00:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
extern void cost_nestloop(NestPath *path, PlannerInfo *root);
extern void cost_mergejoin(MergePath *path, PlannerInfo *root);
extern void cost_hashjoin(HashPath *path, PlannerInfo *root);
-extern void cost_qual_eval(QualCost *cost, List *quals);
-extern void cost_qual_eval_node(QualCost *cost, Node *qual);
+extern void cost_qual_eval(QualCost *cost, List *quals, PlannerInfo *root);
+extern void cost_qual_eval_node(QualCost *cost, Node *qual, PlannerInfo *root);
extern void set_baserel_size_estimates(PlannerInfo *root, RelOptInfo *rel);
extern void set_joinrel_size_estimates(PlannerInfo *root, RelOptInfo *rel,
RelOptInfo *outer_rel,
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.99 2007/01/22 01:35:22 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.100 2007/02/22 22:00:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
*/
extern Plan *create_plan(PlannerInfo *root, Path *best_path);
extern SubqueryScan *make_subqueryscan(List *qptlist, List *qpqual,
- Index scanrelid, Plan *subplan);
+ Index scanrelid, Plan *subplan, List *subrtable);
extern Append *make_append(List *appendplans, bool isTarget, List *tlist);
extern Sort *make_sort_from_pathkeys(PlannerInfo *root, Plan *lefttree,
List *pathkeys);
int64 offset_est, int64 count_est);
extern SetOp *make_setop(SetOpCmd cmd, Plan *lefttree,
List *distinctList, AttrNumber flagColIdx);
-extern Result *make_result(List *tlist, Node *resconstantqual, Plan *subplan);
+extern Result *make_result(PlannerInfo *root, List *tlist,
+ Node *resconstantqual, Plan *subplan);
extern bool is_projection_capable_plan(Plan *plan);
/*
/*
* prototypes for plan/setrefs.c
*/
-extern Plan *set_plan_references(Plan *plan, List *rtable);
+extern Plan *set_plan_references(PlannerGlobal *glob,
+ Plan *plan,
+ List *rtable);
extern List *set_returning_clause_references(List *rlist,
Plan *topplan,
Index resultRelation);
projects / users / gsingh / postgres.git / commitdiff