1996-07-09 08:22:35 +02:00
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/*-------------------------------------------------------------------------
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*
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1999-02-14 00:22:53 +01:00
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* nodeHash.h
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2003-01-11 00:54:24 +01:00
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* prototypes for nodeHash.c
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1996-07-09 08:22:35 +02:00
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*
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*
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2010-01-02 17:58:17 +01:00
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* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
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2000-01-26 06:58:53 +01:00
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* Portions Copyright (c) 1994, Regents of the University of California
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1996-07-09 08:22:35 +02:00
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*
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2010-09-20 22:08:53 +02:00
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* src/include/executor/nodeHash.h
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1996-07-09 08:22:35 +02:00
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*
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*-------------------------------------------------------------------------
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*/
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1997-09-07 07:04:48 +02:00
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#ifndef NODEHASH_H
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#define NODEHASH_H
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1996-07-09 08:22:35 +02:00
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2002-12-05 16:50:39 +01:00
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#include "nodes/execnodes.h"
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1998-02-26 05:46:47 +01:00
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2006-02-28 05:10:28 +01:00
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extern HashState *ExecInitHash(Hash *node, EState *estate, int eflags);
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2002-12-05 16:50:39 +01:00
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extern TupleTableSlot *ExecHash(HashState *node);
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2005-04-16 22:07:35 +02:00
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extern Node *MultiExecHash(HashState *node);
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2002-12-05 16:50:39 +01:00
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extern void ExecEndHash(HashState *node);
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2010-07-12 19:01:06 +02:00
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extern void ExecReScanHash(HashState *node);
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2002-12-05 16:50:39 +01:00
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2010-12-31 02:24:55 +01:00
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extern HashJoinTable ExecHashTableCreate(Hash *node, List *hashOperators,
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bool keepNulls);
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1997-09-08 04:41:22 +02:00
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extern void ExecHashTableDestroy(HashJoinTable hashtable);
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2000-07-12 04:37:39 +02:00
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extern void ExecHashTableInsert(HashJoinTable hashtable,
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2006-06-27 23:31:20 +02:00
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TupleTableSlot *slot,
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2005-10-15 04:49:52 +02:00
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uint32 hashvalue);
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2007-01-29 00:21:26 +01:00
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extern bool ExecHashGetHashValue(HashJoinTable hashtable,
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2005-10-15 04:49:52 +02:00
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ExprContext *econtext,
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2007-01-29 00:21:26 +01:00
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List *hashkeys,
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2007-01-30 02:33:36 +01:00
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bool outer_tuple,
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2007-01-29 00:21:26 +01:00
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bool keep_nulls,
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uint32 *hashvalue);
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2005-03-06 23:15:05 +01:00
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extern void ExecHashGetBucketAndBatch(HashJoinTable hashtable,
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2005-10-15 04:49:52 +02:00
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uint32 hashvalue,
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int *bucketno,
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int *batchno);
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2010-12-31 02:24:55 +01:00
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extern bool ExecScanHashBucket(HashJoinState *hjstate, ExprContext *econtext);
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extern void ExecPrepHashTableForUnmatched(HashJoinState *hjstate);
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extern bool ExecScanHashTableForUnmatched(HashJoinState *hjstate,
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ExprContext *econtext);
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2005-03-06 23:15:05 +01:00
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extern void ExecHashTableReset(HashJoinTable hashtable);
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2010-12-31 02:24:55 +01:00
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extern void ExecHashTableResetMatchFlags(HashJoinTable hashtable);
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2009-03-21 01:04:40 +01:00
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extern void ExecChooseHashTableSize(double ntuples, int tupwidth, bool useskew,
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2005-03-06 23:15:05 +01:00
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int *numbuckets,
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2009-03-21 01:04:40 +01:00
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int *numbatches,
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int *num_skew_mcvs);
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extern int ExecHashGetSkewBucket(HashJoinTable hashtable, uint32 hashvalue);
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2001-10-28 07:26:15 +01:00
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2001-11-05 18:46:40 +01:00
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#endif /* NODEHASH_H */
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