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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-03-06 22:15:05 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-03-06 22:15:05 +0000 |
| commit | 849074f9ae422c64501bb1d53ef840de870bf65c (patch) | |
| tree | 9ac33ca6df68410da184659a4b0ca67f7bdf8bef /src/include/utils/selfuncs.h | |
| parent | 31b6d840f6fdbf3d272e7bf8ec0461742edcdd46 (diff) | |
| download | postgresql-849074f9ae422c64501bb1d53ef840de870bf65c.tar.gz | |
Revise hash join code so that we can increase the number of batches
on-the-fly, and thereby avoid blowing out memory when the planner has
underestimated the hash table size. Hash join will now obey the
work_mem limit with some faithfulness. Per my recent proposal
(hash aggregate part isn't done yet though).
Diffstat (limited to 'src/include/utils/selfuncs.h')
| -rw-r--r-- | src/include/utils/selfuncs.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/utils/selfuncs.h b/src/include/utils/selfuncs.h index cb212e0de7..5fbc9d3ae6 100644 --- a/src/include/utils/selfuncs.h +++ b/src/include/utils/selfuncs.h @@ -8,7 +8,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.21 2004/12/31 22:03:46 pgsql Exp $ + * $PostgreSQL: pgsql/src/include/utils/selfuncs.h,v 1.22 2005/03/06 22:15:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -121,7 +121,7 @@ extern double estimate_num_groups(Query *root, List *groupExprs, double input_rows); extern Selectivity estimate_hash_bucketsize(Query *root, Node *hashkey, - int nbuckets); + double nbuckets); extern Datum btcostestimate(PG_FUNCTION_ARGS); extern Datum rtcostestimate(PG_FUNCTION_ARGS); |