# uint global --source include/not_windows.inc --source include/not_embedded.inc SET @start_global_value = @@global.thread_pool_oversubscribe; # # exists as global only # select @@global.thread_pool_oversubscribe; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.thread_pool_oversubscribe; show global variables like 'thread_pool_oversubscribe'; show session variables like 'thread_pool_oversubscribe'; select * from information_schema.global_variables where variable_name='thread_pool_oversubscribe'; select * from information_schema.session_variables where variable_name='thread_pool_oversubscribe'; # # show that it's writable # set global thread_pool_oversubscribe=60; select @@global.thread_pool_oversubscribe; set global thread_pool_oversubscribe=1000; select @@global.thread_pool_oversubscribe; --error ER_GLOBAL_VARIABLE set session thread_pool_oversubscribe=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_oversubscribe=1.1; --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_oversubscribe=1e1; --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_oversubscribe="foo"; set global thread_pool_oversubscribe=-1; select @@global.thread_pool_oversubscribe; set global thread_pool_oversubscribe=10000000000; select @@global.thread_pool_oversubscribe; set @@global.thread_pool_oversubscribe = @start_global_value;