#
# only global
#
select @@global.report_host;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.report_host;
show global variables like 'report_host';
show session variables like 'report_host';
--disable_warnings
select * from performance_schema.global_variables where variable_name='report_host';
select * from performance_schema.session_variables where variable_name='report_host';
--enable_warnings

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