#
# only global
#
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
select @@global.pid_file;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.pid_file;
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
show global variables like 'pid_file';
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
show session variables like 'pid_file';
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
select * from information_schema.global_variables where variable_name='pid_file';
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
select * from information_schema.session_variables where variable_name='pid_file';

#
# show that it's read-only
#
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set global pid_file=1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set session pid_file=1;