SELECT COUNT(@@GLOBAL.innodb_use_stacktrace);
COUNT(@@GLOBAL.innodb_use_stacktrace)
1
1 Expected
SET @@GLOBAL.innodb_use_stacktrace=1;
ERROR HY000: Variable 'innodb_use_stacktrace' is a read only variable
Expected error 'Read only variable'
SELECT COUNT(@@GLOBAL.innodb_use_stacktrace);
COUNT(@@GLOBAL.innodb_use_stacktrace)
1
1 Expected
SELECT IF(@@GLOBAL.innodb_use_stacktrace, 'ON', 'OFF') = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_use_stacktrace';
IF(@@GLOBAL.innodb_use_stacktrace, 'ON', 'OFF') = VARIABLE_VALUE
1
1 Expected
SELECT COUNT(@@GLOBAL.innodb_use_stacktrace);
COUNT(@@GLOBAL.innodb_use_stacktrace)
1
1 Expected
SELECT COUNT(VARIABLE_VALUE)
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='innodb_use_stacktrace';
COUNT(VARIABLE_VALUE)
1
1 Expected
SELECT @@innodb_use_stacktrace = @@GLOBAL.innodb_use_stacktrace;
@@innodb_use_stacktrace = @@GLOBAL.innodb_use_stacktrace
1
1 Expected
SELECT COUNT(@@innodb_use_stacktrace);
COUNT(@@innodb_use_stacktrace)
1
1 Expected
SELECT COUNT(@@local.innodb_use_stacktrace);
ERROR HY000: Variable 'innodb_use_stacktrace' is a GLOBAL variable
Expected error 'Variable is a GLOBAL variable'
SELECT COUNT(@@SESSION.innodb_use_stacktrace);
ERROR HY000: Variable 'innodb_use_stacktrace' is a GLOBAL variable
Expected error 'Variable is a GLOBAL variable'
SELECT COUNT(@@GLOBAL.innodb_use_stacktrace);
COUNT(@@GLOBAL.innodb_use_stacktrace)
1
1 Expected
SELECT innodb_use_stacktrace = @@SESSION.innodb_use_stacktrace;
ERROR 42S22: Unknown column 'innodb_use_stacktrace' in 'field list'
Expected error 'Readonly variable'