#
# show the global and session values;
#
select @@global.explicit_defaults_for_timestamp;

#
# Test that it's a global-only variable
#
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.explicit_defaults_for_timestamp;

show global variables like 'explicit_defaults_for_timestamp';
show session variables like 'explicit_defaults_for_timestamp';

--disable_warnings
select * from information_schema.global_variables where variable_name='explicit_defaults_for_timestamp';
select * from information_schema.session_variables where variable_name='explicit_defaults_for_timestamp';
--enable_warnings

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