Edit File: protocol_version_basic.result
select @@global.protocol_version; @@global.protocol_version 10 select @@session.protocol_version; ERROR HY000: Variable 'protocol_version' is a GLOBAL variable show global variables like 'protocol_version'; Variable_name Value protocol_version 10 show session variables like 'protocol_version'; Variable_name Value protocol_version 10 select * from information_schema.global_variables where variable_name='protocol_version'; VARIABLE_NAME VARIABLE_VALUE PROTOCOL_VERSION 10 select * from information_schema.session_variables where variable_name='protocol_version'; VARIABLE_NAME VARIABLE_VALUE PROTOCOL_VERSION 10 set global protocol_version=1; ERROR HY000: Variable 'protocol_version' is a read only variable set session protocol_version=1; ERROR HY000: Variable 'protocol_version' is a read only variable