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

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