postgresql/src/include/executor/nodeSort.h

/*-------------------------------------------------------------------------
 *
 * nodeSort.h
 *
 *
 *
 * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $PostgreSQL: pgsql/src/include/executor/nodeSort.h,v 1.25 2009/01/01 17:23:59 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODESORT_H
#define NODESORT_H

#include "nodes/execnodes.h"

extern int	ExecCountSlotsSort(Sort *node);
extern SortState *ExecInitSort(Sort *node, EState *estate, int eflags);
extern TupleTableSlot *ExecSort(SortState *node);
extern void ExecEndSort(SortState *node);
extern void ExecSortMarkPos(SortState *node);
extern void ExecSortRestrPos(SortState *node);
extern void ExecReScanSort(SortState *node, ExprContext *exprCtxt);

#endif   /* NODESORT_H */
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`/*-------------------------------------------------------------------------`
			`*`
Change my-function-name-- to my_function_name, and optimizer renames. 1999-02-14 00:22:53 +01:00			`* nodeSort.h`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`*`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`*`
			`*`
Update copyright for 2009. 2009-01-01 18:24:05 +01:00			`* Portions Copyright (c) 1996-2009, 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 06:58:53 +01:00			`* Portions Copyright (c) 1994, Regents of the University of California`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`*`
Update copyright for 2009. 2009-01-01 18:24:05 +01:00			`* $PostgreSQL: pgsql/src/include/executor/nodeSort.h,v 1.25 2009/01/01 17:23:59 momjian Exp $`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`#ifndef NODESORT_H`
			`#define NODESORT_H`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00
Phase 1 of read-only-plans project: cause executor state nodes to point to plan nodes, not vice-versa. All executor state nodes now inherit from struct PlanState. Copying of plan trees has been simplified by not storing a list of SubPlans in Plan nodes (eliminating duplicate links). The executor still needs such a list, but it can build it during ExecutorStart since it has to scan the plan tree anyway. No initdb forced since no stored-on-disk structures changed, but you will need a full recompile because of node-numbering changes. 2002-12-05 16:50:39 +01:00			`#include "nodes/execnodes.h"`
Cleanup up include files. 1997-11-26 02:14:33 +01:00
Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`extern int ExecCountSlotsSort(Sort *node);`
Extend the ExecInitNode API so that plan nodes receive a set of flag bits indicating which optional capabilities can actually be exercised at runtime. This will allow Sort and Material nodes, and perhaps later other nodes, to avoid unnecessary overhead in common cases. This commit just adds the infrastructure and arranges to pass the correct flag values down to plan nodes; none of the actual optimizations are here yet. I'm committing this separately in case anyone wants to measure the added overhead. (It should be negligible.) Simon Riggs and Tom Lane 2006-02-28 05:10:28 +01:00			`extern SortState ExecInitSort(Sort node, EState *estate, int eflags);`
Phase 1 of read-only-plans project: cause executor state nodes to point to plan nodes, not vice-versa. All executor state nodes now inherit from struct PlanState. Copying of plan trees has been simplified by not storing a list of SubPlans in Plan nodes (eliminating duplicate links). The executor still needs such a list, but it can build it during ExecutorStart since it has to scan the plan tree anyway. No initdb forced since no stored-on-disk structures changed, but you will need a full recompile because of node-numbering changes. 2002-12-05 16:50:39 +01:00			`extern TupleTableSlot ExecSort(SortState node);`
			`extern void ExecEndSort(SortState *node);`
			`extern void ExecSortMarkPos(SortState *node);`
			`extern void ExecSortRestrPos(SortState *node);`
			`extern void ExecReScanSort(SortState node, ExprContext exprCtxt);`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 2001-10-28 07:26:15 +01:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass. 2001-11-05 18:46:40 +01:00			`#endif /* NODESORT_H */`