# bool global --source include/have_innodb.inc SET @start_global_value = @@global.innodb_encryption_rotation_iops; # # exists as global only # select @@global.innodb_encryption_rotation_iops; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_encryption_rotation_iops; show global variables like 'innodb_encryption_rotation_iops'; show session variables like 'innodb_encryption_rotation_iops'; select * from information_schema.global_variables where variable_name='innodb_encryption_rotation_iops'; select * from information_schema.session_variables where variable_name='innodb_encryption_rotation_iops'; # # show that it's writable # set global innodb_encryption_rotation_iops=100; select @@global.innodb_encryption_rotation_iops; set global innodb_encryption_rotation_iops=50; select @@global.innodb_encryption_rotation_iops; set global innodb_encryption_rotation_iops=100; select @@global.innodb_encryption_rotation_iops; --error ER_GLOBAL_VARIABLE set session innodb_encryption_rotation_iops=50; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotation_iops=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotation_iops=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_encryption_rotation_iops="foo"; SET @@global.innodb_encryption_rotation_iops = @start_global_value;