#
# show the global and session values;
#
select @@global.old;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.old;
show global variables like 'old';
show session variables like 'old';
--disable_warnings
select * from information_schema.global_variables where variable_name='old';
select * from information_schema.session_variables where variable_name='old';
--enable_warnings

#
# show that it's read-only
#
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set global old=1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set session old=1;

