postgresql/src/include/executor/nodeFunctionscan.h

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

#include "nodes/execnodes.h"

extern FunctionScanState *ExecInitFunctionScan(FunctionScan *node, EState *estate, int eflags);
extern TupleTableSlot *ExecFunctionScan(FunctionScanState *node);
extern void ExecEndFunctionScan(FunctionScanState *node);
extern void ExecReScanFunctionScan(FunctionScanState *node);

#endif   /* NODEFUNCTIONSCAN_H */
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ... 2002-05-12 16:10:05 -04:00			`/*-------------------------------------------------------------------------`
			`*`
			`* nodeFunctionscan.h`
			`*`
			`*`
			`*`
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`
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ... 2002-05-12 16:10:05 -04:00			`* Portions Copyright (c) 1994, Regents of the University of California`
			`*`
Remove cvs keywords from all files. 2010-09-20 16:08:53 -04:00			`* src/include/executor/nodeFunctionscan.h`
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ... 2002-05-12 16:10:05 -04:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef NODEFUNCTIONSCAN_H`
			`#define NODEFUNCTIONSCAN_H`

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"`
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ... 2002-05-12 16:10:05 -04:00
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 FunctionScanState ExecInitFunctionScan(FunctionScan 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 ExecFunctionScan(FunctionScanState node);`
			`extern void ExecEndFunctionScan(FunctionScanState *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 ExecReScanFunctionScan(FunctionScanState *node);`
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ... 2002-05-12 16:10:05 -04:00
			`#endif /* NODEFUNCTIONSCAN_H */`