diff options
Diffstat (limited to 'src/include/executor/hashjoin.h')
| -rw-r--r-- | src/include/executor/hashjoin.h | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/src/include/executor/hashjoin.h b/src/include/executor/hashjoin.h index f5200831d7e..abe0e5914d7 100644 --- a/src/include/executor/hashjoin.h +++ b/src/include/executor/hashjoin.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/executor/hashjoin.h,v 1.36 2005/04/16 20:07:35 tgl Exp $ + * $PostgreSQL: pgsql/src/include/executor/hashjoin.h,v 1.37 2005/10/15 02:49:44 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -41,7 +41,7 @@ * If nbatch > 1 then tuples that don't belong in first batch get saved * into inner-batch temp files. The same statements apply for the * first scan of the outer relation, except we write tuples to outer-batch - * temp files. After finishing the first scan, we do the following for + * temp files. After finishing the first scan, we do the following for * each remaining batch: * 1. Read tuples from inner batch file, load into hash buckets. * 2. Read tuples from outer batch file, match to hash buckets and output. @@ -63,7 +63,7 @@ typedef struct HashJoinTupleData { - struct HashJoinTupleData *next; /* link to next tuple in same bucket */ + struct HashJoinTupleData *next; /* link to next tuple in same bucket */ uint32 hashvalue; /* tuple's hash code */ HeapTupleData htup; /* tuple header */ } HashJoinTupleData; @@ -86,21 +86,20 @@ typedef struct HashJoinTableData double totalTuples; /* # tuples obtained from inner plan */ /* - * These arrays are allocated for the life of the hash join, but - * only if nbatch > 1. A file is opened only when we first write - * a tuple into it (otherwise its pointer remains NULL). Note that - * the zero'th array elements never get used, since we will process - * rather than dump out any tuples of batch zero. + * These arrays are allocated for the life of the hash join, but only if + * nbatch > 1. A file is opened only when we first write a tuple into it + * (otherwise its pointer remains NULL). Note that the zero'th array + * elements never get used, since we will process rather than dump out any + * tuples of batch zero. */ BufFile **innerBatchFile; /* buffered virtual temp file per batch */ BufFile **outerBatchFile; /* buffered virtual temp file per batch */ /* - * Info about the datatype-specific hash functions for the datatypes - * being hashed. We assume that the inner and outer sides of each - * hashclause are the same type, or at least share the same hash - * function. This is an array of the same length as the number of hash - * keys. + * Info about the datatype-specific hash functions for the datatypes being + * hashed. We assume that the inner and outer sides of each hashclause + * are the same type, or at least share the same hash function. This is an + * array of the same length as the number of hash keys. */ FmgrInfo *hashfunctions; /* lookup data for hash functions */ |