--source include/have_innodb.inc

# Display default value
SELECT @@GLOBAL.innodb_scrub_log;
--echo 0 Expected

# Check if value can be set
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@GLOBAL.innodb_scrub_log=1;
--echo Expected error 'Read only variable'

SELECT @@GLOBAL.innodb_scrub_log;
--echo 0 Expected

# Check if the value in GLOBAL TABLE matches value in variable
SELECT IF(@@GLOBAL.innodb_scrub_log, 'ON', 'OFF') = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_scrub_log';
--echo 1 Expected

SELECT @@GLOBAL.innodb_scrub_log;
--echo 0 Expected

SELECT VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='innodb_scrub_log';
--echo 0 Expected

# Check if accessing variable with and without GLOBAL point to same variable
SELECT @@innodb_scrub_log = @@GLOBAL.innodb_scrub_log;
--echo 1 Expected

# Check if innodb_scrub_log can be accessed with and without @@ sign
SELECT @@innodb_scrub_log;
--echo 0 Expected

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@local.innodb_scrub_log;
--echo Expected error 'Variable is a GLOBAL variable'

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@SESSION.innodb_scrub_log;
--echo Expected error 'Variable is a GLOBAL variable'

SELECT @@GLOBAL.innodb_scrub_log;
--echo 0 Expected

--Error ER_BAD_FIELD_ERROR
SELECT innodb_scrub_log;
--echo Expected error 'Unknow column in field list'