--source include/have_innodb.inc

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

#
# exists as global only
#
--echo Valid values are one or above
select @@global.innodb_stats_modified_counter >=1;
select @@global.innodb_stats_modified_counter;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.innodb_stats_modified_counter;
show global variables like 'innodb_stats_modified_counter';
show session variables like 'innodb_stats_modified_counter';
select * from information_schema.global_variables where variable_name='innodb_stats_modified_counter';
select * from information_schema.session_variables where variable_name='innodb_stats_modified_counter';

#
# show that it's writable
#
set global innodb_stats_modified_counter=10;
select @@global.innodb_stats_modified_counter;
select * from information_schema.global_variables where variable_name='innodb_stats_modified_counter';
select * from information_schema.session_variables where variable_name='innodb_stats_modified_counter';
--error ER_GLOBAL_VARIABLE
set session innodb_stats_modified_counter=1;

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_stats_modified_counter=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_stats_modified_counter=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_stats_modified_counter="foo";

set global innodb_stats_modified_counter=-7;
select @@global.innodb_stats_modified_counter;
select * from information_schema.global_variables where variable_name='innodb_stats_modified_counter';

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