--source include/have_innodb.inc

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

#
# exists as global only
#
--echo Valid values are 'ON' and 'OFF' 
select @@global.innodb_stats_traditional in (0, 1);
select @@global.innodb_stats_traditional;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.innodb_stats_traditional;
show global variables like 'innodb_stats_traditional';
show session variables like 'innodb_stats_traditional';
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';

#
# show that it's writable
#
set global innodb_stats_traditional='OFF';
select @@global.innodb_stats_traditional;
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
set @@global.innodb_stats_traditional=1;
select @@global.innodb_stats_traditional;
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
set global innodb_stats_traditional=0;
select @@global.innodb_stats_traditional;
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
set @@global.innodb_stats_traditional='ON';
select @@global.innodb_stats_traditional;
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
--error ER_GLOBAL_VARIABLE
set session innodb_stats_traditional='OFF';
--error ER_GLOBAL_VARIABLE
set @@session.innodb_stats_traditional='ON';

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_stats_traditional=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_stats_traditional=1e1;
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_stats_traditional=2;
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_stats_traditional=-3;
select @@global.innodb_stats_traditional;
select * from information_schema.global_variables where variable_name='innodb_stats_traditional';
select * from information_schema.session_variables where variable_name='innodb_stats_traditional';
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_stats_traditional='AUTO';

#
# Cleanup
#

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