'#---------------------BS_STVARS_001_01----------------------#' SELECT COUNT(@@GLOBAL.basedir); COUNT(@@GLOBAL.basedir) 1 1 Expected '#---------------------BS_STVARS_001_02----------------------#' SET @@GLOBAL.basedir=1; ERROR HY000: Variable 'basedir' is a read only variable Expected error 'Read only variable' SELECT COUNT(@@GLOBAL.basedir); COUNT(@@GLOBAL.basedir) 1 1 Expected '#---------------------BS_STVARS_001_03----------------------#' SELECT @@GLOBAL.basedir = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='basedir'; @@GLOBAL.basedir = VARIABLE_VALUE 1 1 Expected SELECT COUNT(@@GLOBAL.basedir); COUNT(@@GLOBAL.basedir) 1 1 Expected SELECT COUNT(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='basedir'; COUNT(VARIABLE_VALUE) 1 1 Expected '#---------------------BS_STVARS_001_04----------------------#' SELECT @@basedir = @@GLOBAL.basedir; @@basedir = @@GLOBAL.basedir 1 1 Expected '#---------------------BS_STVARS_001_05----------------------#' SELECT COUNT(@@basedir); COUNT(@@basedir) 1 1 Expected SELECT COUNT(@@local.basedir); ERROR HY000: Variable 'basedir' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@SESSION.basedir); ERROR HY000: Variable 'basedir' is a GLOBAL variable Expected error 'Variable is a GLOBAL variable' SELECT COUNT(@@GLOBAL.basedir); COUNT(@@GLOBAL.basedir) 1 1 Expected SELECT basedir = @@SESSION.basedir; ERROR 42S22: Unknown column 'basedir' in 'field list' Expected error 'Readonly variable'