--source include/not_embedded.inc

SET @start_global_value = @@global.sync_relay_log;
SELECT @start_global_value;

#
# exists as global only
#
select @@global.sync_relay_log;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.sync_relay_log;
show global variables like 'sync_relay_log';
show session variables like 'sync_relay_log';
select * from information_schema.global_variables where variable_name='sync_relay_log';
select * from information_schema.session_variables where variable_name='sync_relay_log';

#
# show that it's writable
#
set global sync_relay_log=1;
select @@global.sync_relay_log;
--error ER_GLOBAL_VARIABLE
set session sync_relay_log=1;

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global sync_relay_log=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global sync_relay_log=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global sync_relay_log="foo";

#
# min/max values
#
set global sync_relay_log=0;
select @@global.sync_relay_log;
set global sync_relay_log=cast(-1 as unsigned int);
select @@global.sync_relay_log;

SET @@global.sync_relay_log = @start_global_value;
SELECT @@global.sync_relay_log;