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Increase the default value of default_statistics_target from 10 to 100,

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and its maximum value from 1000 to 10000.  ALTER TABLE SET STATISTICS
similarly now allows a value up to 10000.  Per discussion.
This commit is contained in:
Tom Lane
2008-12-13 19:13:44 +00:00
parent b69bde7749
commit 65e3ea7641
9 changed files with 27 additions and 27 deletions
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4
src/backend/utils/misc/guc.c
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@@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.482 2008/12/02 02:00:32 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.483 2008/12/13 19:13:44 tgl Exp $
*
*--------------------------------------------------------------------
*/
@@ -1245,7 +1245,7 @@ static struct config_int ConfigureNamesInt[] =
"column-specific target set via ALTER TABLE SET STATISTICS.")
},
&default_statistics_target,
10, 1, 1000, NULL, NULL
100, 1, 10000, NULL, NULL
},
{
{"from_collapse_limit", PGC_USERSET, QUERY_TUNING_OTHER,

2
src/backend/utils/misc/postgresql.conf.sample
View File

@@ -210,7 +210,7 @@
# - Other Planner Options -
#default_statistics_target = 10 # range 1-1000
#default_statistics_target = 100 # range 1-10000
#constraint_exclusion = off
#cursor_tuple_fraction = 0.1 # range 0.0-1.0
#from_collapse_limit = 8