--source include/not_embedded.inc SET @save_slave_parallel_max_queued= @@GLOBAL.slave_parallel_max_queued; SELECT @@GLOBAL.slave_parallel_max_queued as 'Check default'; --error ER_INCORRECT_GLOBAL_LOCAL_VAR SELECT @@SESSION.slave_parallel_max_queued as 'no session var'; SET GLOBAL slave_parallel_max_queued= 0; SET GLOBAL slave_parallel_max_queued= DEFAULT; SET GLOBAL slave_parallel_max_queued= 65536; SELECT @@GLOBAL.slave_parallel_max_queued; SET GLOBAL slave_parallel_max_queued = @save_slave_parallel_max_queued;