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Forgot that I had intended to replace division by masking in hash calculation.

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This commit is contained in:
Tom Lane 2005-03-13 19:59:40 +00:00
parent 8264cbcb50
commit dffbbb3e55
1 changed files with 3 additions and 2 deletions
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5
src/backend/executor/nodeHash.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.89 2005/03/06 22:15:04 tgl Exp $ * $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.90 2005/03/13 19:59:40 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -709,7 +709,8 @@ ExecHashGetBucketAndBatch(HashJoinTable hashtable,
if (nbatch > 1) if (nbatch > 1)
{ {
*bucketno = hashvalue % nbuckets; *bucketno = hashvalue % nbuckets;
*batchno = (hashvalue / nbuckets) % nbatch; /* since nbatch is a power of 2, can do MOD by masking */
*batchno = (hashvalue / nbuckets) & (nbatch - 1);
} }
else else
{ {