postgresql/src/include/optimizer/prep.h

/*-------------------------------------------------------------------------
 *
 * prep.h
 *	  prototypes for files in optimizer/prep/
 *
 *
 * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: prep.h,v 1.23 2000/06/20 04:22:13 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PREP_H
#define PREP_H

#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"

/*
 * prototypes for prepqual.c
 */
extern List *canonicalize_qual(Expr *qual, bool removeAndFlag);
extern List *cnfify(Expr *qual, bool removeAndFlag);

/*
 * prototypes for preptlist.c
 */
extern List *preprocess_targetlist(List *tlist, int command_type,
					  Index result_relation, List *range_table);

/*
 * prototypes for prepunion.c
 */
extern List *find_all_inheritors(Oid parentrel);
extern bool find_inheritable_rt_entry(List *rangetable,
									  Index *rt_index, List **inheritors);
extern Plan *plan_inherit_queries(Query *root, List *tlist,
								  Index rt_index, List *inheritors);
extern Plan *plan_union_queries(Query *parse);

#endif	 /* PREP_H */
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`/*-------------------------------------------------------------------------`
			`*`
Change my-function-name-- to my_function_name, and optimizer renames. 1999-02-13 18:22:53 -05:00			`* prep.h`
Further improvements in cnfify: reduce amount of self-recursion in or_normalize, remove detection of duplicate subexpressions (since it's highly unlikely to be worth the amount of time it takes), and introduce a dnfify() entry point so that unintelligible backwards logic in UNION processing can be eliminated. This is just an intermediate step --- next thing is to look at not forcing the qual into CNF form when it would be better off in DNF form. 1999-09-12 14:08:17 -04:00			`* prototypes for files in optimizer/prep/`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*`
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files. 2000-01-26 00:58:53 -05:00			`* Portions Copyright (c) 1996-2000, PostgreSQL, Inc`
			`* Portions Copyright (c) 1994, Regents of the University of California`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
Make inheritance planning logic a little simpler and clearer, hopefully even a little faster. 2000-06-20 00:22:21 -04:00			`* $Id: prep.h,v 1.23 2000/06/20 04:22:13 tgl Exp $`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef PREP_H`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 01:04:48 -04:00			`#define PREP_H`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
Change #include's to use <> and "" as appropriate. 1999-07-15 19:04:24 -04:00			`#include "nodes/parsenodes.h"`
More cleanup 1999-07-16 13:07:40 -04:00			`#include "nodes/plannodes.h"`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
			`/*`
Fix problems with grouping/aggregation in queries that use inheritance ... basically it was completely busted :-( 1999-06-06 13:38:11 -04:00			`* prototypes for prepqual.c`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*/`
First cut at doing something reasonable with OR-of-ANDs WHERE conditions. There are some pretty bogus heuristics in prepqual.c that try to decide whether to output CNF or DNF format; they need to be replaced, likely. Right now the code is probably too willing to choose DNF form, which might hurt performance in some cases that used to work OK. But at least we have a foundation to build on. 1999-09-12 20:17:25 -04:00			`extern List canonicalize_qual(Expr qual, bool removeAndFlag);`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 17:56:23 -04:00			`extern List cnfify(Expr qual, bool removeAndFlag);`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
			`/*`
Fix problems with grouping/aggregation in queries that use inheritance ... basically it was completely busted :-( 1999-06-06 13:38:11 -04:00			`* prototypes for preptlist.c`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*/`
OK, folks, here is the pgindent output. 1998-09-01 00:40:42 -04:00			`extern List preprocess_targetlist(List tlist, int command_type,`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 17:56:23 -04:00			`Index result_relation, List *range_table);`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
Fix problems with grouping/aggregation in queries that use inheritance ... basically it was completely busted :-( 1999-06-06 13:38:11 -04:00			`/*`
			`* prototypes for prepunion.c`
			`*/`
fix_parsetree_attnums was not nearly smart enough about walking parse trees. Also rewrite find_all_inheritors() in a more intelligible style. 1999-12-13 22:35:28 -05:00			`extern List *find_all_inheritors(Oid parentrel);`
Make inheritance planning logic a little simpler and clearer, hopefully even a little faster. 2000-06-20 00:22:21 -04:00			`extern bool find_inheritable_rt_entry(List *rangetable,`
			`Index rt_index, List *inheritors);`
			`extern Plan plan_inherit_queries(Query root, List *tlist,`
			`Index rt_index, List *inheritors);`
			`extern Plan plan_union_queries(Query parse);`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
OK, folks, here is the pgindent output. 1998-09-01 00:40:42 -04:00			`#endif /* PREP_H */`