# # 2010-01-25 - Added # --source include/have_innodb.inc SET @start_global_value = @@global.innodb_old_blocks_time; SELECT @start_global_value; # # exists as global only # --echo Valid values are zero or above select @@global.innodb_old_blocks_time >=0; select @@global.innodb_old_blocks_time; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_old_blocks_time; show global variables like 'innodb_old_blocks_time'; show session variables like 'innodb_old_blocks_time'; select * from information_schema.global_variables where variable_name='innodb_old_blocks_time'; select * from information_schema.session_variables where variable_name='innodb_old_blocks_time'; # # show that it's writable # set global innodb_old_blocks_time=10; select @@global.innodb_old_blocks_time; select * from information_schema.global_variables where variable_name='innodb_old_blocks_time'; select * from information_schema.session_variables where variable_name='innodb_old_blocks_time'; --error ER_GLOBAL_VARIABLE set session innodb_old_blocks_time=1; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_old_blocks_time=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_old_blocks_time=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_old_blocks_time="foo"; set global innodb_old_blocks_time=-7; select @@global.innodb_old_blocks_time; select * from information_schema.global_variables where variable_name='innodb_old_blocks_time'; # # cleanup # SET @@global.innodb_old_blocks_time = @start_global_value; SELECT @@global.innodb_old_blocks_time;