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Convert hash join code to use MinimalTuple format in tuple hash table

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and batch files.  Should reduce memory and I/O demands for such joins.
This commit is contained in:
Tom Lane
2006-06-27 21:31:20 +00:00
parent 665c5e861a
commit 69d0a15e2a
7 changed files with 121 additions and 72 deletions
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6
src/include/executor/nodeHash.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/executor/nodeHash.h,v 1.40 2006/03/05 15:58:56 momjian Exp $
* $PostgreSQL: pgsql/src/include/executor/nodeHash.h,v 1.41 2006/06/27 21:31:20 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -26,7 +26,7 @@ extern void ExecReScanHash(HashState *node, ExprContext *exprCtxt);
extern HashJoinTable ExecHashTableCreate(Hash *node, List *hashOperators);
extern void ExecHashTableDestroy(HashJoinTable hashtable);
extern void ExecHashTableInsert(HashJoinTable hashtable,
HeapTuple tuple,
TupleTableSlot *slot,
uint32 hashvalue);
extern uint32 ExecHashGetHashValue(HashJoinTable hashtable,
ExprContext *econtext,
@@ -35,7 +35,7 @@ extern void ExecHashGetBucketAndBatch(HashJoinTable hashtable,
uint32 hashvalue,
int *bucketno,
int *batchno);
extern HeapTuple ExecScanHashBucket(HashJoinState *hjstate,
extern HashJoinTuple ExecScanHashBucket(HashJoinState *hjstate,
ExprContext *econtext);
extern void ExecHashTableReset(HashJoinTable hashtable);
extern void ExecChooseHashTableSize(double ntuples, int tupwidth,