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40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* nodeHash.h
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*
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*
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*
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* Portions Copyright (c) 1996-2001, 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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* $Id: nodeHash.h,v 1.18 2001/01/24 19:43:23 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEHASH_H
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#define NODEHASH_H
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#include "nodes/plannodes.h"
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/* NTUP_PER_BUCKET is exported because planner wants to see it */
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#define NTUP_PER_BUCKET 10
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extern TupleTableSlot *ExecHash(Hash *node);
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extern bool ExecInitHash(Hash *node, EState *estate, Plan *parent);
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extern int ExecCountSlotsHash(Hash *node);
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extern void ExecEndHash(Hash *node);
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extern HashJoinTable ExecHashTableCreate(Hash *node);
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extern void ExecHashTableDestroy(HashJoinTable hashtable);
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extern void ExecHashTableInsert(HashJoinTable hashtable,
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ExprContext *econtext,
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Node *hashkey);
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extern int ExecHashGetBucket(HashJoinTable hashtable,
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ExprContext *econtext,
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Node *hashkey);
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extern HeapTuple ExecScanHashBucket(HashJoinState *hjstate, List *hjclauses,
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ExprContext *econtext);
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extern void ExecHashTableReset(HashJoinTable hashtable, long ntuples);
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extern void ExecReScanHash(Hash *node, ExprContext *exprCtxt, Plan *parent);
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#endif /* NODEHASH_H */
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