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Fix planner and rewriter to follow SQL semantics for tables that are

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mentioned in FROM but not elsewhere in the query: such tables should be
joined over anyway.  Aside from being more standards-compliant, this allows
removal of some very ugly hacks for COUNT(*) processing.  Also, allow
HAVING clause without aggregate functions, since SQL does.  Clean up
CREATE RULE statement-list syntax the same way Bruce just fixed the
main stmtmulti production.
CAUTION: addition of a field to RangeTblEntry nodes breaks stored rules;
you will have to initdb if you have any rules.
This commit is contained in:
Tom Lane
1999-10-07 04:23:24 +00:00
parent 4040fcfa78
commit 3eb1c82277
21 changed files with 408 additions and 390 deletions
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8
src/include/optimizer/planmain.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: planmain.h,v 1.33 1999/08/22 23:56:43 tgl Exp $
* $Id: planmain.h,v 1.34 1999/10/07 04:23:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -19,9 +19,7 @@
/*
* prototypes for plan/planmain.c
*/
extern Plan *query_planner(Query *root,
int command_type, List *tlist, List *qual);
extern Plan *query_planner(Query *root, List *tlist, List *qual);
/*
* prototypes for plan/createplan.c
@@ -42,8 +40,8 @@ extern Result *make_result(List *tlist, Node *resconstantqual, Plan *subplan);
*/
extern void make_var_only_tlist(Query *root, List *tlist);
extern void add_restrict_and_join_to_rels(Query *root, List *clauses);
extern void add_missing_rels_to_query(Query *root);
extern void set_joininfo_mergeable_hashable(List *rel_list);
extern void add_missing_vars_to_tlist(Query *root, List *tlist);
/*
* prototypes for plan/setrefs.c