'#---------------------BS_STVARS_025_01----------------------#' SELECT COUNT(@@GLOBAL.innodb_data_home_dir); COUNT(@@GLOBAL.innodb_data_home_dir) 0 1 Expected '#---------------------BS_STVARS_025_02----------------------#' SET @@GLOBAL.innodb_data_home_dir=1; ERROR HY000: Variable 'innodb_data_home_dir' is a read only variable Expected error 'Read only variable' SELECT COUNT(@@GLOBAL.innodb_data_home_dir); COUNT(@@GLOBAL.innodb_data_home_dir) 0 1 Expected '#---------------------BS_STVARS_025_03----------------------#' SELECT @@GLOBAL.innodb_data_home_dir = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='innodb_data_home_dir'; @@GLOBAL.innodb_data_home_dir = VARIABLE_VALUE NULL 1 Expected SELECT COUNT(@@GLOBAL.innodb_data_home_dir); COUNT(@@GLOBAL.innodb_data_home_dir) 0 1 Expected SELECT COUNT(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='innodb_data_home_dir'; COUNT(VARIABLE_VALUE) 1 1 Expected '#---------------------BS_STVARS_025_04----------------------#' SELECT @@innodb_data_home_dir = @@GLOBAL.innodb_data_home_dir; @@innodb_data_home_dir = @@GLOBAL.innodb_data_home_dir NULL 1 Expected '#---------------------BS_STVARS_025_05----------------------#' SELECT COUNT(@@innodb_data_home_dir); COUNT(@@innodb_data_home_dir) 0 1 Expected SELECT COUNT(@@local.innodb_data_home_dir); ERROR HY000: Variable 'innodb_data_home_dir' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@SESSION.innodb_data_home_dir); ERROR HY000: Variable 'innodb_data_home_dir' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@GLOBAL.innodb_data_home_dir); COUNT(@@GLOBAL.innodb_data_home_dir) 0 1 Expected SELECT innodb_data_home_dir = @@SESSION.innodb_data_home_dir; ERROR 42S22: Unknown column 'innodb_data_home_dir' in 'field list' Expected error 'Readonly variable'