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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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10
src/include/parser/parse_relation.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_relation.h,v 1.19 2000/09/12 21:07:12 tgl Exp $
* $Id: parse_relation.h,v 1.20 2000/09/29 18:21:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -27,7 +27,7 @@ extern int refnameRangeTablePosn(ParseState *pstate,
extern int RTERangeTablePosn(ParseState *pstate,
RangeTblEntry *rte,
int *sublevels_up);
extern JoinExpr *scanJoinTreeForRefname(Node *jtnode, char *refname);
extern JoinExpr *scanJoinListForRefname(Node *jtnode, char *refname);
extern Node *colnameToVar(ParseState *pstate, char *colname);
extern Node *qualifiedNameToVar(ParseState *pstate, char *refname,
char *colname, bool implicitRTEOK);
@ -36,7 +36,11 @@ extern RangeTblEntry *addRangeTableEntry(ParseState *pstate,
Attr *alias,
bool inh,
bool inFromCl);
extern void addRTEtoJoinTree(ParseState *pstate, RangeTblEntry *rte);
extern RangeTblEntry *addRangeTableEntryForSubquery(ParseState *pstate,
Query *subquery,
Attr *alias,
bool inFromCl);
extern void addRTEtoJoinList(ParseState *pstate, RangeTblEntry *rte);
extern RangeTblEntry *addImplicitRTE(ParseState *pstate, char *relname);
extern void expandRTE(ParseState *pstate, RangeTblEntry *rte,
List **colnames, List **colvars);