--source include/have_innodb.inc --source include/have_debug.inc SET @start_global_value = @@global.innodb_limit_optimistic_insert_debug; SELECT @start_global_value; # # exists as global only # select @@global.innodb_limit_optimistic_insert_debug; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_limit_optimistic_insert_debug; show global variables like 'innodb_limit_optimistic_insert_debug'; show session variables like 'innodb_limit_optimistic_insert_debug'; select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug'; select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug'; # # show that it's writable # set global innodb_limit_optimistic_insert_debug=1; select @@global.innodb_limit_optimistic_insert_debug; select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug'; select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug'; set @@global.innodb_limit_optimistic_insert_debug=0; select @@global.innodb_limit_optimistic_insert_debug; select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug'; select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug'; --error ER_GLOBAL_VARIABLE set session innodb_limit_optimistic_insert_debug='some'; --error ER_GLOBAL_VARIABLE set @@session.innodb_limit_optimistic_insert_debug='some'; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_limit_optimistic_insert_debug=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_limit_optimistic_insert_debug='foo'; set global innodb_limit_optimistic_insert_debug=-2; --error ER_WRONG_TYPE_FOR_VAR set global innodb_limit_optimistic_insert_debug=1e1; # # Cleanup # SET @@global.innodb_limit_optimistic_insert_debug = @start_global_value; SELECT @@global.innodb_limit_optimistic_insert_debug;