# uint global --source include/not_windows.inc --source include/not_embedded.inc SET @start_global_value = @@global.thread_pool_size; # # exists as global only # --replace_column 1 # select @@global.thread_pool_size; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.thread_pool_size; --replace_column 2 # show global variables like 'thread_pool_size'; --replace_column 2 # show session variables like 'thread_pool_size'; --replace_column 2 # select * from information_schema.global_variables where variable_name='thread_pool_size'; --replace_column 2 # select * from information_schema.session_variables where variable_name='thread_pool_size'; --replace_column 2 # # # show that it's writable # set global thread_pool_size=1; select @@global.thread_pool_size; set global thread_pool_size=128; select @@global.thread_pool_size; --error ER_GLOBAL_VARIABLE set session thread_pool_size=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_size=1.1; --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_size=1e1; --error ER_WRONG_TYPE_FOR_VAR set global thread_pool_size="foo"; set global thread_pool_size=-1; set global thread_pool_size=100000; SET @@global.thread_pool_size = @start_global_value;