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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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37
src/backend/nodes/print.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/print.c,v 1.41 2000/09/25 18:14:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/print.c,v 1.42 2000/09/29 18:21:29 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -39,7 +39,6 @@ print(void *obj)
s = nodeToString(obj);
printf("%s\n", s);
fflush(stdout);
return;
}
/*
@ -132,10 +131,15 @@ print_rt(List *rtable)
{
RangeTblEntry *rte = lfirst(l);
printf("%d\t%s(%s)\t%u\t%d\t%s\n",
i, rte->relname, rte->eref->relname, rte->relid,
rte->inFromCl,
(rte->inh ? "inh" : ""));
if (rte->relname)
printf("%d\t%s (%s)\t%u",
i, rte->relname, rte->eref->relname, rte->relid);
else
printf("%d\t[subquery] (%s)\t",
i, rte->eref->relname);
printf("\t%s\t%s\n",
(rte->inh ? "inh" : ""),
(rte->inFromCl ? "inFromCl" : ""));
i++;
}
}
@ -286,7 +290,7 @@ plannode_type(Plan *p)
{
switch (nodeTag(p))
{
case T_Plan:
case T_Plan:
return "PLAN";
break;
case T_Result:
@ -304,6 +308,12 @@ plannode_type(Plan *p)
case T_IndexScan:
return "INDEXSCAN";
break;
case T_TidScan:
return "TIDSCAN";
break;
case T_SubqueryScan:
return "SUBQUERYSCAN";
break;
case T_Join:
return "JOIN";
break;
@ -334,9 +344,6 @@ plannode_type(Plan *p)
case T_Group:
return "GROUP";
break;
case T_TidScan:
return "TIDSCAN";
break;
default:
return "UNKNOWN";
break;
@ -372,10 +379,10 @@ print_plan_recursive(Plan *p, Query *parsetree, int indentLevel, char *label)
}
else if (IsA(p, IndexScan))
{
StrNCpy(extraInfo,
((RangeTblEntry *) (nth(((IndexScan *) p)->scan.scanrelid - 1,
parsetree->rtable)))->relname,
NAMEDATALEN);
RangeTblEntry *rte;
rte = rt_fetch(((IndexScan *) p)->scan.scanrelid, parsetree->rtable);
StrNCpy(extraInfo, rte->relname, NAMEDATALEN);
}
else
extraInfo[0] = '\0';
@ -386,7 +393,7 @@ print_plan_recursive(Plan *p, Query *parsetree, int indentLevel, char *label)
print_plan_recursive(p->lefttree, parsetree, indentLevel + 3, "l: ");
print_plan_recursive(p->righttree, parsetree, indentLevel + 3, "r: ");
if (nodeTag(p) == T_Append)
if (IsA(p, Append))
{
List *lst;
int whichplan = 0;