postgresql/src/include/executor/nodeGroup.h

/*-------------------------------------------------------------------------
 *
 * nodeGroup.h
 *	  prototypes for nodeGroup.c
 *
 *
 * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/executor/nodeGroup.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODEGROUP_H
#define NODEGROUP_H

#include "nodes/execnodes.h"

extern GroupState *ExecInitGroup(Group *node, EState *estate, int eflags);
extern TupleTableSlot *ExecGroup(GroupState *node);
extern void ExecEndGroup(GroupState *node);
extern void ExecReScanGroup(GroupState *node);

#endif   /* NODEGROUP_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			`* nodeGroup.h`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 01:04:48 -04:00			`* prototypes for nodeGroup.c`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*`
Update copyright for 2014 Update all files in head, and files COPYRIGHT and legal.sgml in all back branches. 2014-01-07 16:05:30 -05:00			`* Portions Copyright (c) 1996-2014, 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`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
Remove cvs keywords from all files. 2010-09-20 16:08:53 -04:00			`* src/include/executor/nodeGroup.h`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 01:04:48 -04:00			`#ifndef NODEGROUP_H`
			`#define NODEGROUP_H`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
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 10:50:39 -05:00			`#include "nodes/execnodes.h"`
Cleanup up include files. 1997-11-25 20:14:33 -05:00
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 2006-02-27 23:10:28 -05:00			`extern GroupState ExecInitGroup(Group 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 10:50:39 -05:00			`extern TupleTableSlot ExecGroup(GroupState node);`
			`extern void ExecEndGroup(GroupState *node);`
Make NestLoop plan nodes pass outer-relation variables into their inner relation using the general PARAM_EXEC executor parameter mechanism, rather than the ad-hoc kluge of passing the outer tuple down through ExecReScan. The previous method was hard to understand and could never be extended to handle parameters coming from multiple join levels. This patch doesn't change the set of possible plans nor have any significant performance effect, but it's necessary infrastructure for future generalization of the concept of an inner indexscan plan. ExecReScan's second parameter is now unused, so it's removed. 2010-07-12 13:01:06 -04:00			`extern void ExecReScanGroup(GroupState *node);`
pgindent run over code. 1999-05-25 12:15:34 -04:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass. 2001-11-05 12:46:40 -05:00			`#endif /* NODEGROUP_H */`