53e757689c
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.
29 lines
946 B
C
29 lines
946 B
C
/*-------------------------------------------------------------------------
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*
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* nodeHashjoin.h
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* prototypes for nodeHashjoin.c
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*
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*
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* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/executor/nodeHashjoin.h,v 1.41 2010/07/12 17:01:06 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEHASHJOIN_H
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#define NODEHASHJOIN_H
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#include "nodes/execnodes.h"
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#include "storage/buffile.h"
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extern HashJoinState *ExecInitHashJoin(HashJoin *node, EState *estate, int eflags);
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extern TupleTableSlot *ExecHashJoin(HashJoinState *node);
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extern void ExecEndHashJoin(HashJoinState *node);
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extern void ExecReScanHashJoin(HashJoinState *node);
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extern void ExecHashJoinSaveTuple(MinimalTuple tuple, uint32 hashvalue,
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BufFile **fileptr);
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#endif /* NODEHASHJOIN_H */
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