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https://github.com/postgres/postgres.git
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Tom Lane
1fd0c59e25
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.
43 lines
1.4 KiB
C
43 lines
1.4 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) 1996-2002, 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 1.27 2002/12/05 15:50:37 tgl 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/execnodes.h"
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extern int ExecCountSlotsHash(Hash *node);
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extern HashState *ExecInitHash(Hash *node, EState *estate);
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extern TupleTableSlot *ExecHash(HashState *node);
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extern void ExecEndHash(HashState *node);
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extern void ExecReScanHash(HashState *node, ExprContext *exprCtxt);
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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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List *hashkeys);
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extern int ExecHashGetBucket(HashJoinTable hashtable,
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ExprContext *econtext,
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List *hashkeys);
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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 ExecChooseHashTableSize(double ntuples, int tupwidth,
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int *virtualbuckets,
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int *physicalbuckets,
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int *numbatches);
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extern uint32 ComputeHashFunc(Datum key, int typLen, bool byVal);
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#endif /* NODEHASH_H */
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