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Create a new 'MultiExecProcNode' call API for plan nodes that don't

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return just a single tuple at a time.  Currently the only such node
type is Hash, but I expect we will soon have indexscans that can return
tuple bitmaps.  A side benefit is that EXPLAIN ANALYZE now shows the
correct tuple count for a Hash node.
This commit is contained in:
Tom Lane
2005-04-16 20:07:35 +00:00
parent 85eee28cec
commit d8b1bf4791
9 changed files with 121 additions and 39 deletions
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3
src/include/executor/nodeHash.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/executor/nodeHash.h,v 1.36 2005/03/06 22:15:05 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/nodeHash.h,v 1.37 2005/04/16 20:07:35 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -19,6 +19,7 @@
extern int ExecCountSlotsHash(Hash *node);
extern HashState *ExecInitHash(Hash *node, EState *estate);
extern TupleTableSlot *ExecHash(HashState *node);
extern Node *MultiExecHash(HashState *node);
extern void ExecEndHash(HashState *node);
extern void ExecReScanHash(HashState *node, ExprContext *exprCtxt);