#
# 2010-01-25 - Added
#

--source include/have_innodb.inc

SET @start_global_value = @@global.innodb_stats_persistent_sample_pages;
SELECT @start_global_value;

#
# exists as global only
#
--echo Valid values are zero or above
SELECT @@global.innodb_stats_persistent_sample_pages >=0;
SELECT @@global.innodb_stats_persistent_sample_pages;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.innodb_stats_persistent_sample_pages;
SHOW global variables LIKE 'innodb_stats_persistent_sample_pages';
SHOW session variables LIKE 'innodb_stats_persistent_sample_pages';
--disable_warnings
SELECT * FROM information_schema.global_variables 
WHERE variable_name='innodb_stats_persistent_sample_pages';
SELECT * FROM information_schema.session_variables 
WHERE variable_name='innodb_stats_persistent_sample_pages';
--enable_warnings

#
# SHOW that it's writable
#
SET global innodb_stats_persistent_sample_pages=10;
SELECT @@global.innodb_stats_persistent_sample_pages;
--disable_warnings
SELECT * FROM information_schema.global_variables
WHERE variable_name='innodb_stats_persistent_sample_pages';
SELECT * FROM information_schema.session_variables 
WHERE variable_name='innodb_stats_persistent_sample_pages';
--enable_warnings
--error ER_GLOBAL_VARIABLE
SET session innodb_stats_persistent_sample_pages=1;

# 
# show the default value
#
set global innodb_stats_persistent_sample_pages=DEFAULT;
select @@global.innodb_stats_persistent_sample_pages;

#
# valid values
#
SET global innodb_stats_persistent_sample_pages=0;
SELECT @@global.innodb_stats_persistent_sample_pages;

SET global innodb_stats_persistent_sample_pages=10;
SELECT @@global.innodb_stats_persistent_sample_pages;




#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
SET global innodb_stats_persistent_sample_pages=1.1;
--error ER_WRONG_TYPE_FOR_VAR
SET global innodb_stats_persistent_sample_pages=1e1;
--error ER_WRONG_TYPE_FOR_VAR
SET global innodb_stats_persistent_sample_pages="foo";
--error ER_WRONG_TYPE_FOR_VAR
SET global innodb_stats_persistent_sample_pages=' ';
SELECT @@global.innodb_stats_persistent_sample_pages;
--error ER_WRONG_TYPE_FOR_VAR
SET global innodb_stats_persistent_sample_pages=" ";
SELECT @@global.innodb_stats_persistent_sample_pages;
SET global innodb_stats_persistent_sample_pages=-7;
SELECT @@global.innodb_stats_persistent_sample_pages;
--disable_warnings
SELECT * FROM information_schema.global_variables 
WHERE variable_name='innodb_stats_persistent_sample_pages';
--enable_warnings


#
# cleanup
#
SET @@global.innodb_stats_persistent_sample_pages = @start_global_value;
SELECT @@global.innodb_stats_persistent_sample_pages;