postgresql/src/include/optimizer/restrictinfo.h

/*-------------------------------------------------------------------------
 *
 * restrictinfo.h
 *	  prototypes for restrictinfo.c.
 *
 *
 * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: restrictinfo.h,v 1.15 2002/06/20 20:29:51 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef RESTRICTINFO_H
#define RESTRICTINFO_H

#include "nodes/relation.h"

extern bool restriction_is_or_clause(RestrictInfo *restrictinfo);
extern List *get_actual_clauses(List *restrictinfo_list);
extern void get_actual_join_clauses(List *restrictinfo_list,
						List **joinquals, List **otherquals);

#endif   /* RESTRICTINFO_H */
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README. 1999-02-03 15:15:53 -05:00			`/*-------------------------------------------------------------------------`
			`*`
Change my-function-name-- to my_function_name, and optimizer renames. 1999-02-13 18:22:53 -05:00			`* restrictinfo.h`
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README. 1999-02-03 15:15:53 -05:00			`* prototypes for restrictinfo.c.`
			`*`
			`*`
Update copyright to 2002. 2002-06-20 16:29:54 -04:00			`* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group`
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) 1994, Regents of the University of California`
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README. 1999-02-03 15:15:53 -05:00			`*`
Update copyright to 2002. 2002-06-20 16:29:54 -04:00			`* $Id: restrictinfo.h,v 1.15 2002/06/20 20:29:51 momjian Exp $`
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README. 1999-02-03 15:15:53 -05:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef RESTRICTINFO_H`
			`#define RESTRICTINFO_H`

			`#include "nodes/relation.h"`

Clean up messy clause-selectivity code in clausesel.c; repair bug identified by Hiroshi (incorrect cost attributed to OR clauses after multiple passes through set_rest_selec()). I think the code was trying to allow selectivities of OR subclauses to be passed in from outside, but noplace was actually passing any useful data, and set_rest_selec() was passing wrong data. Restructure representation of "indexqual" in IndexPath nodes so that it is the same as for indxqual in completed IndexScan nodes: namely, a toplevel list with an entry for each pass of the index scan, having sublists that are implicitly-ANDed index qual conditions for that pass. You don't want to know what the old representation was :-( Improve documentation of OR-clause indexscan functions. Remove useless 'notclause' field from RestrictInfo nodes. (This might force an initdb for anyone who has stored rules containing RestrictInfos, but I do not think that RestrictInfo ever appears in completed plans.) 1999-07-24 19:21:14 -04:00			`extern bool restriction_is_or_clause(RestrictInfo *restrictinfo);`
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README. 1999-02-03 15:15:53 -05:00			`extern List get_actual_clauses(List restrictinfo_list);`
First cut at full support for OUTER JOINs. There are still a few loose ends to clean up (see my message of same date to pghackers), but mostly it works. INITDB REQUIRED! 2000-09-12 17:07:18 -04:00			`extern void get_actual_join_clauses(List *restrictinfo_list,`
pgindent run. Make it all clean. 2001-03-21 23:01:46 -05:00			`List joinquals, List otherquals);`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 2001-10-28 01:26:15 -05:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass. 2001-11-05 12:46:40 -05:00			`#endif /* RESTRICTINFO_H */`