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Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias.

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(Don't forget that an alias is required.)  Views reimplemented as expanding
to subselect-in-FROM.  Grouping, aggregates, DISTINCT in views actually
work now (he says optimistically).  No UNION support in subselects/views
yet, but I have some ideas about that.  Rule-related permissions checking
moved out of rewriter and into executor.
INITDB REQUIRED!
This commit is contained in:
Tom Lane
2000-09-29 18:21:41 +00:00
parent 6f64c2e54a
commit 3a94e789f5
77 changed files with 3176 additions and 2661 deletions
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113
src/backend/executor/execProcnode.c
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@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execProcnode.c,v 1.19 2000/08/13 02:50:03 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execProcnode.c,v 1.20 2000/09/29 18:21:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -90,6 +90,7 @@
#include "executor/nodeSeqscan.h"
#include "executor/nodeSort.h"
#include "executor/nodeSubplan.h"
#include "executor/nodeSubqueryscan.h"
#include "executor/nodeUnique.h"
#include "miscadmin.h"
#include "tcop/tcopprot.h"
@ -153,6 +154,15 @@ ExecInitNode(Plan *node, EState *estate, Plan *parent)
result = ExecInitIndexScan((IndexScan *) node, estate, parent);
break;
case T_TidScan:
result = ExecInitTidScan((TidScan *) node, estate, parent);
break;
case T_SubqueryScan:
result = ExecInitSubqueryScan((SubqueryScan *) node, estate,
parent);
break;
/* ----------------
* join nodes
* ----------------
@ -165,6 +175,14 @@ ExecInitNode(Plan *node, EState *estate, Plan *parent)
result = ExecInitMergeJoin((MergeJoin *) node, estate, parent);
break;
case T_Hash:
result = ExecInitHash((Hash *) node, estate, parent);
break;
case T_HashJoin:
result = ExecInitHashJoin((HashJoin *) node, estate, parent);
break;
/* ----------------
* materialization nodes
* ----------------
@ -189,18 +207,6 @@ ExecInitNode(Plan *node, EState *estate, Plan *parent)
result = ExecInitAgg((Agg *) node, estate, parent);
break;
case T_Hash:
result = ExecInitHash((Hash *) node, estate, parent);
break;
case T_HashJoin:
result = ExecInitHashJoin((HashJoin *) node, estate, parent);
break;
case T_TidScan:
result = ExecInitTidScan((TidScan *) node, estate, parent);
break;
default:
elog(ERROR, "ExecInitNode: node %d unsupported", nodeTag(node));
result = FALSE;
@ -272,6 +278,14 @@ ExecProcNode(Plan *node, Plan *parent)
result = ExecIndexScan((IndexScan *) node);
break;
case T_TidScan:
result = ExecTidScan((TidScan *) node);
break;
case T_SubqueryScan:
result = ExecSubqueryScan((SubqueryScan *) node);
break;
/* ----------------
* join nodes
* ----------------
@ -284,6 +298,14 @@ ExecProcNode(Plan *node, Plan *parent)
result = ExecMergeJoin((MergeJoin *) node);
break;
case T_Hash:
result = ExecHash((Hash *) node);
break;
case T_HashJoin:
result = ExecHashJoin((HashJoin *) node);
break;
/* ----------------
* materialization nodes
* ----------------
@ -308,18 +330,6 @@ ExecProcNode(Plan *node, Plan *parent)
result = ExecAgg((Agg *) node);
break;
case T_Hash:
result = ExecHash((Hash *) node);
break;
case T_HashJoin:
result = ExecHashJoin((HashJoin *) node);
break;
case T_TidScan:
result = ExecTidScan((TidScan *) node);
break;
default:
elog(ERROR, "ExecProcNode: node %d unsupported", nodeTag(node));
result = NULL;
@ -356,6 +366,12 @@ ExecCountSlotsNode(Plan *node)
case T_IndexScan:
return ExecCountSlotsIndexScan((IndexScan *) node);
case T_TidScan:
return ExecCountSlotsTidScan((TidScan *) node);
case T_SubqueryScan:
return ExecCountSlotsSubqueryScan((SubqueryScan *) node);
/* ----------------
* join nodes
* ----------------
@ -366,6 +382,12 @@ ExecCountSlotsNode(Plan *node)
case T_MergeJoin:
return ExecCountSlotsMergeJoin((MergeJoin *) node);
case T_Hash:
return ExecCountSlotsHash((Hash *) node);
case T_HashJoin:
return ExecCountSlotsHashJoin((HashJoin *) node);
/* ----------------
* materialization nodes
* ----------------
@ -385,15 +407,6 @@ ExecCountSlotsNode(Plan *node)
case T_Agg:
return ExecCountSlotsAgg((Agg *) node);
case T_Hash:
return ExecCountSlotsHash((Hash *) node);
case T_HashJoin:
return ExecCountSlotsHashJoin((HashJoin *) node);
case T_TidScan:
return ExecCountSlotsTidScan((TidScan *) node);
default:
elog(ERROR, "ExecCountSlotsNode: node not yet supported: %d",
nodeTag(node));
@ -462,6 +475,14 @@ ExecEndNode(Plan *node, Plan *parent)
ExecEndIndexScan((IndexScan *) node);
break;
case T_TidScan:
ExecEndTidScan((TidScan *) node);
break;
case T_SubqueryScan:
ExecEndSubqueryScan((SubqueryScan *) node);
break;
/* ----------------
* join nodes
* ----------------
@ -474,6 +495,14 @@ ExecEndNode(Plan *node, Plan *parent)
ExecEndMergeJoin((MergeJoin *) node);
break;
case T_Hash:
ExecEndHash((Hash *) node);
break;
case T_HashJoin:
ExecEndHashJoin((HashJoin *) node);
break;
/* ----------------
* materialization nodes
* ----------------
@ -498,22 +527,6 @@ ExecEndNode(Plan *node, Plan *parent)
ExecEndAgg((Agg *) node);
break;
/* ----------------
* XXX add hooks to these
* ----------------
*/
case T_Hash:
ExecEndHash((Hash *) node);
break;
case T_HashJoin:
ExecEndHashJoin((HashJoin *) node);
break;
case T_TidScan:
ExecEndTidScan((TidScan *) node);
break;
default:
elog(ERROR, "ExecEndNode: node %d unsupported", nodeTag(node));
break;