--source include/not_embedded.inc SET @start_global_value = @@global.gtid_mode; SELECT @start_global_value; # # exists as global only # select @@global.gtid_mode; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.gtid_mode; show global variables like 'gtid_mode'; show session variables like 'gtid_mode'; select * from information_schema.global_variables where variable_name='gtid_mode'; select * from information_schema.session_variables where variable_name='gtid_mode'; # # show that it isn't writable now. # --error ER_INCORRECT_GLOBAL_LOCAL_VAR set global gtid_mode = "ON"; select @@global.gtid_mode; --error ER_INCORRECT_GLOBAL_LOCAL_VAR set session gtid_mode = 1; # # See rpl_gtid_mode.test for a comprehensive test case. #