
#
# Only global
#

select @@global.max_digest_length;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.max_digest_length;

show global variables like 'max_digest_length';

show session variables like 'max_digest_length';

--disable_warnings
select * from information_schema.global_variables
  where variable_name='max_digest_length';

select * from information_schema.session_variables
  where variable_name='max_digest_length';
--enable_warnings

#
# Read-only
#

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set global max_digest_length=1;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set session max_digest_length=1;

