# bool global --source include/have_innodb.inc SET @start_global_value = @@global.innodb_encryption_rotate_key_age; # # exists as global only # select @@global.innodb_encryption_rotate_key_age; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_encryption_rotate_key_age; show global variables like 'innodb_encryption_rotate_key_age'; show session variables like 'innodb_encryption_rotate_key_age'; select * from information_schema.global_variables where variable_name='innodb_encryption_rotate_key_age'; select * from information_schema.session_variables where variable_name='innodb_encryption_rotate_key_age'; # # show that it's writable # set global innodb_encryption_rotate_key_age=1; select @@global.innodb_encryption_rotate_key_age; set global innodb_encryption_rotate_key_age=2; select @@global.innodb_encryption_rotate_key_age; set global innodb_encryption_rotate_key_age=1; select @@global.innodb_encryption_rotate_key_age; --error ER_GLOBAL_VARIABLE set session innodb_encryption_rotate_key_age=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotate_key_age=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotate_key_age=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotate_key_age="foo"; SET @@global.innodb_encryption_rotate_key_age = @start_global_value;