SELECT @@global.last_gtid;
ERROR HY000: Variable 'last_gtid' is a SESSION variable
SET GLOBAL last_gtid= 10;
ERROR HY000: Variable 'last_gtid' is a read only variable
SET SESSION last_gtid= 20;
ERROR HY000: Variable 'last_gtid' is a read only variable
SELECT @@session.last_gtid;
@@session.last_gtid