'#---------------------BS_STVARS_054_01----------------------#' SELECT COUNT(@@GLOBAL.version_comment); COUNT(@@GLOBAL.version_comment) 1 1 Expected '#---------------------BS_STVARS_054_02----------------------#' SET @@GLOBAL.version_comment=1; ERROR HY000: Variable 'version_comment' is a read only variable Expected error 'Read only variable' SELECT COUNT(@@GLOBAL.version_comment); COUNT(@@GLOBAL.version_comment) 1 1 Expected '#---------------------BS_STVARS_054_03----------------------#' SELECT @@GLOBAL.version_comment = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='version_comment'; @@GLOBAL.version_comment = VARIABLE_VALUE 1 1 Expected SELECT COUNT(@@GLOBAL.version_comment); COUNT(@@GLOBAL.version_comment) 1 1 Expected SELECT COUNT(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='version_comment'; COUNT(VARIABLE_VALUE) 1 1 Expected '#---------------------BS_STVARS_054_04----------------------#' SELECT @@version_comment = @@GLOBAL.version_comment; @@version_comment = @@GLOBAL.version_comment 1 1 Expected '#---------------------BS_STVARS_054_05----------------------#' SELECT COUNT(@@version_comment); COUNT(@@version_comment) 1 1 Expected SELECT COUNT(@@local.version_comment); ERROR HY000: Variable 'version_comment' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@SESSION.version_comment); ERROR HY000: Variable 'version_comment' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@GLOBAL.version_comment); COUNT(@@GLOBAL.version_comment) 1 1 Expected SELECT version_comment = @@SESSION.version_comment; ERROR 42S22: Unknown column 'version_comment' in 'field list' Expected error 'Readonly variable'