postgresql/src/include/executor/nodeWorktablescan.h

/*-------------------------------------------------------------------------
 *
 * nodeWorktablescan.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/nodeWorktablescan.h,v 1.3 2009/09/27 21:10:53 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODEWORKTABLESCAN_H
#define NODEWORKTABLESCAN_H

#include "nodes/execnodes.h"

extern WorkTableScanState *ExecInitWorkTableScan(WorkTableScan *node, EState *estate, int eflags);
extern TupleTableSlot *ExecWorkTableScan(WorkTableScanState *node);
extern void ExecEndWorkTableScan(WorkTableScanState *node);
extern void ExecWorkTableScanReScan(WorkTableScanState *node, ExprContext *exprCtxt);

#endif   /* NODEWORKTABLESCAN_H */
Implement SQL-standard WITH clauses, including WITH RECURSIVE. There are some unimplemented aspects: recursive queries must use UNION ALL (should allow UNION too), and we don't have SEARCH or CYCLE clauses. These might or might not get done for 8.4, but even without them it's a pretty useful feature. There are also a couple of small loose ends and definitional quibbles, which I'll send a memo about to pgsql-hackers shortly. But let's land the patch now so we can get on with other development. Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane 2008-10-04 17:56:55 -04:00			`/*-------------------------------------------------------------------------`
			`*`
			`* nodeWorktablescan.h`
			`*`
			`*`
			`*`
Update copyright for 2009. 2009-01-01 12:24:05 -05:00			`* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group`
Implement SQL-standard WITH clauses, including WITH RECURSIVE. There are some unimplemented aspects: recursive queries must use UNION ALL (should allow UNION too), and we don't have SEARCH or CYCLE clauses. These might or might not get done for 8.4, but even without them it's a pretty useful feature. There are also a couple of small loose ends and definitional quibbles, which I'll send a memo about to pgsql-hackers shortly. But let's land the patch now so we can get on with other development. Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane 2008-10-04 17:56:55 -04:00			`* Portions Copyright (c) 1994, Regents of the University of California`
			`*`
Remove no-longer-needed ExecCountSlots infrastructure. 2009-09-27 17:10:53 -04:00			`* $PostgreSQL: pgsql/src/include/executor/nodeWorktablescan.h,v 1.3 2009/09/27 21:10:53 tgl Exp $`
Implement SQL-standard WITH clauses, including WITH RECURSIVE. There are some unimplemented aspects: recursive queries must use UNION ALL (should allow UNION too), and we don't have SEARCH or CYCLE clauses. These might or might not get done for 8.4, but even without them it's a pretty useful feature. There are also a couple of small loose ends and definitional quibbles, which I'll send a memo about to pgsql-hackers shortly. But let's land the patch now so we can get on with other development. Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane 2008-10-04 17:56:55 -04:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
			`#ifndef NODEWORKTABLESCAN_H`
			`#define NODEWORKTABLESCAN_H`

			`#include "nodes/execnodes.h"`

			`extern WorkTableScanState ExecInitWorkTableScan(WorkTableScan node, EState *estate, int eflags);`
			`extern TupleTableSlot ExecWorkTableScan(WorkTableScanState node);`
			`extern void ExecEndWorkTableScan(WorkTableScanState *node);`
			`extern void ExecWorkTableScanReScan(WorkTableScanState node, ExprContext exprCtxt);`

			`#endif /* NODEWORKTABLESCAN_H */`