#
# only global
#
select @@global.ft_query_expansion_limit;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.ft_query_expansion_limit;
show global variables like 'ft_query_expansion_limit';
show session variables like 'ft_query_expansion_limit';
select * from information_schema.global_variables where variable_name='ft_query_expansion_limit';
select * from information_schema.session_variables where variable_name='ft_query_expansion_limit';

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