Edit File: port_basic.result
select @@global.port; @@global.port MASTER_MYPORT select @@session.port; ERROR HY000: Variable 'port' is a GLOBAL variable show global variables like 'port'; Variable_name Value port MASTER_MYPORT show session variables like 'port'; Variable_name Value port MASTER_MYPORT select * from information_schema.global_variables where variable_name='port'; VARIABLE_NAME VARIABLE_VALUE PORT MASTER_MYPORT select * from information_schema.session_variables where variable_name='port'; VARIABLE_NAME VARIABLE_VALUE PORT MASTER_MYPORT set global port=1; ERROR HY000: Variable 'port' is a read only variable set session port=1; ERROR HY000: Variable 'port' is a read only variable