select @@global.ft_stopword_file;
@@global.ft_stopword_file
(built-in)
select @@session.ft_stopword_file;
ERROR HY000: Variable 'ft_stopword_file' is a GLOBAL variable
show global variables like 'ft_stopword_file';
Variable_name	Value
ft_stopword_file	(built-in)
show session variables like 'ft_stopword_file';
Variable_name	Value
ft_stopword_file	(built-in)
select * from information_schema.global_variables where variable_name='ft_stopword_file';
VARIABLE_NAME	VARIABLE_VALUE
FT_STOPWORD_FILE	(built-in)
select * from information_schema.session_variables where variable_name='ft_stopword_file';
VARIABLE_NAME	VARIABLE_VALUE
FT_STOPWORD_FILE	(built-in)
set global ft_stopword_file=1;
ERROR HY000: Variable 'ft_stopword_file' is a read only variable
set session ft_stopword_file=1;
ERROR HY000: Variable 'ft_stopword_file' is a read only variable