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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
Download Patch File Download Diff File Expand all files Collapse all files

15
src/backend/executor/execAmi.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: execAmi.c,v 1.51 2000/08/03 19:19:30 tgl Exp $
* $Id: execAmi.c,v 1.52 2000/09/29 18:21:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -44,6 +44,7 @@
#include "executor/nodeSeqscan.h"
#include "executor/nodeSort.h"
#include "executor/nodeSubplan.h"
#include "executor/nodeSubqueryscan.h"
#include "executor/nodeUnique.h"
static Pointer ExecBeginScan(Relation relation, int nkeys, ScanKey skeys,
@ -304,6 +305,14 @@ ExecReScan(Plan *node, ExprContext *exprCtxt, Plan *parent)
ExecIndexReScan((IndexScan *) node, exprCtxt, parent);
break;
case T_TidScan:
ExecTidReScan((TidScan *) node, exprCtxt, parent);
break;
case T_SubqueryScan:
ExecSubqueryReScan((SubqueryScan *) node, exprCtxt, parent);
break;
case T_Material:
ExecMaterialReScan((Material *) node, exprCtxt, parent);
break;
@ -348,10 +357,6 @@ ExecReScan(Plan *node, ExprContext *exprCtxt, Plan *parent)
ExecReScanAppend((Append *) node, exprCtxt, parent);
break;
case T_TidScan:
ExecTidReScan((TidScan *) node, exprCtxt, parent);
break;
default:
elog(ERROR, "ExecReScan: node type %d not supported",
nodeTag(node));