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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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8
src/backend/parser/parse_target.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.62 2000/09/12 21:07:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.63 2000/09/29 18:21:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -386,7 +386,7 @@ checkInsertTargets(ParseState *pstate, List *cols, List **attrnos)
* Turns '*' (in the target list) into a list of targetlist entries.
*
* tlist entries are generated for each relation appearing in the FROM list,
* which by now has been expanded into a join tree.
* which by now has been transformed into a joinlist.
*/
static List *
ExpandAllTables(ParseState *pstate)
@ -395,10 +395,10 @@ ExpandAllTables(ParseState *pstate)
List *jt;
/* SELECT *; */
if (pstate->p_jointree == NIL)
if (pstate->p_joinlist == NIL)
elog(ERROR, "Wildcard with no tables specified not allowed");
foreach(jt, pstate->p_jointree)
foreach(jt, pstate->p_joinlist)
{
Node *n = (Node *) lfirst(jt);