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MDEV-4345: fixed optimizer_selectivity_sampling_limit default value.

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unknown
2013-04-19 19:35:13 +03:00
parent c44c923156
commit 1a8486a842
3 changed files with 15 additions and 15 deletions
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24
mysql-test/suite/sys_vars/r/optimizer_selectivity_sampling_limit_basic.result
View File

@ -1,33 +1,33 @@
SET @start_global_value = @@global.optimizer_selectivity_sampling_limit;
SELECT @start_global_value;
@start_global_value
5000
100
SET @start_session_value = @@session.optimizer_selectivity_sampling_limit;
SELECT @start_session_value;
@start_session_value
5000
100
'#--------------------FN_DYNVARS_115_01-------------------------#'
SET @@global.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@global.optimizer_selectivity_sampling_limit;
@@global.optimizer_selectivity_sampling_limit
5000
100
SET @@session.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@session.optimizer_selectivity_sampling_limit;
@@session.optimizer_selectivity_sampling_limit
5000
100
'#--------------------FN_DYNVARS_115_02-------------------------#'
SET @@global.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@global.optimizer_selectivity_sampling_limit = 5000;
@@global.optimizer_selectivity_sampling_limit = 5000
SELECT @@global.optimizer_selectivity_sampling_limit = 100;
@@global.optimizer_selectivity_sampling_limit = 100
1
SET @@session.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@session.optimizer_selectivity_sampling_limit = 5000;
@@session.optimizer_selectivity_sampling_limit = 5000
SELECT @@session.optimizer_selectivity_sampling_limit = 100;
@@session.optimizer_selectivity_sampling_limit = 100
1
'#--------------------FN_DYNVARS_115_03-------------------------#'
SELECT @@global.optimizer_selectivity_sampling_limit;
@@global.optimizer_selectivity_sampling_limit
5000
100
SET @@global.optimizer_selectivity_sampling_limit = 9;
Warnings:
Warning 1292 Truncated incorrect optimizer_selectivity_sampling_l value: '9'
@ -63,7 +63,7 @@ SELECT @@global.optimizer_selectivity_sampling_limit;
'#--------------------FN_DYNVARS_115_04-------------------------#'
SELECT @@session.optimizer_selectivity_sampling_limit;
@@session.optimizer_selectivity_sampling_limit
5000
100
SET @@session.optimizer_selectivity_sampling_limit = 9;
Warnings:
Warning 1292 Truncated incorrect optimizer_selectivity_sampling_l value: '9'
@ -134,8 +134,8 @@ SELECT @@local.optimizer_selectivity_sampling_limit = @@session.optimizer_select
SET @@global.optimizer_selectivity_sampling_limit = @start_global_value;
SELECT @@global.optimizer_selectivity_sampling_limit;
@@global.optimizer_selectivity_sampling_limit
5000
100
SET @@session.optimizer_selectivity_sampling_limit = @start_session_value;
SELECT @@session.optimizer_selectivity_sampling_limit;
@@session.optimizer_selectivity_sampling_limit
5000
100

4
mysql-test/suite/sys_vars/t/optimizer_selectivity_sampling_limit_basic.test
View File

@ -34,10 +34,10 @@ SELECT @@session.optimizer_selectivity_sampling_limit;
#########################################################################
SET @@global.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@global.optimizer_selectivity_sampling_limit = 5000;
SELECT @@global.optimizer_selectivity_sampling_limit = 100;
SET @@session.optimizer_selectivity_sampling_limit = DEFAULT;
SELECT @@session.optimizer_selectivity_sampling_limit = 5000;
SELECT @@session.optimizer_selectivity_sampling_limit = 100;
--echo '#--------------------FN_DYNVARS_115_03-------------------------#'

2
sql/opt_range.h
View File

@ -1052,7 +1052,7 @@ void store_key_image_to_rec(Field *field, uchar *ptr, uint len);
extern String null_string;
/* check this number of rows (default value) */
#define SELECTIVITY_SAMPLING_LIMIT 5000
#define SELECTIVITY_SAMPLING_LIMIT 100
/* but no more then this part of table (10%) */
#define SELECTIVITY_SAMPLING_SHARE 0.10
/* do not check if we are going check less then this number of records */