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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-01-28 19:34:28 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-01-28 19:34:28 +0000 |
| commit | 0bf2587df46f3b554d62f7628d1d474bda7ddfc5 (patch) | |
| tree | 92f670d4d386d72eab646685648d6cf3f4a546eb /src/include/executor | |
| parent | c3a4e22e826ca2cd2f1e1b6d6dd4ae953b6755f1 (diff) | |
| download | postgresql-0bf2587df46f3b554d62f7628d1d474bda7ddfc5.tar.gz postgresql-0bf2587df46f3b554d62f7628d1d474bda7ddfc5.zip | |
Improve planner's estimation of the space needed for HashAgg plans:
look at the actual aggregate transition datatypes and the actual overhead
needed by nodeAgg.c, instead of using pessimistic round numbers.
Per a discussion with Michael Tiemann.
Diffstat (limited to 'src/include/executor')
| -rw-r--r-- | src/include/executor/nodeAgg.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/executor/nodeAgg.h b/src/include/executor/nodeAgg.h index 32449c22aab..41dd57a8acb 100644 --- a/src/include/executor/nodeAgg.h +++ b/src/include/executor/nodeAgg.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/nodeAgg.h,v 1.23 2004/12/31 22:03:29 pgsql Exp $ + * $PostgreSQL: pgsql/src/include/executor/nodeAgg.h,v 1.24 2005/01/28 19:34:18 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -23,6 +23,8 @@ extern TupleTableSlot *ExecAgg(AggState *node); extern void ExecEndAgg(AggState *node); extern void ExecReScanAgg(AggState *node, ExprContext *exprCtxt); +extern Size hash_agg_entry_size(int numAggs); + extern Datum aggregate_dummy(PG_FUNCTION_ARGS); #endif /* NODEAGG_H */ |