1SET @start_global_value = @@global.aria_sync_log_dir; 2select @@global.aria_sync_log_dir; 3@@global.aria_sync_log_dir 4NEWFILE 5select @@session.aria_sync_log_dir; 6ERROR HY000: Variable 'aria_sync_log_dir' is a GLOBAL variable 7show global variables like 'aria_sync_log_dir'; 8Variable_name Value 9aria_sync_log_dir NEWFILE 10show session variables like 'aria_sync_log_dir'; 11Variable_name Value 12aria_sync_log_dir NEWFILE 13select * from information_schema.global_variables where variable_name='aria_sync_log_dir'; 14VARIABLE_NAME VARIABLE_VALUE 15ARIA_SYNC_LOG_DIR NEWFILE 16select * from information_schema.session_variables where variable_name='aria_sync_log_dir'; 17VARIABLE_NAME VARIABLE_VALUE 18ARIA_SYNC_LOG_DIR NEWFILE 19set global aria_sync_log_dir=1; 20select @@global.aria_sync_log_dir; 21@@global.aria_sync_log_dir 22NEWFILE 23set session aria_sync_log_dir=1; 24ERROR HY000: Variable 'aria_sync_log_dir' is a GLOBAL variable and should be set with SET GLOBAL 25set global aria_sync_log_dir=never; 26select @@global.aria_sync_log_dir; 27@@global.aria_sync_log_dir 28NEVER 29set global aria_sync_log_dir=newfile; 30select @@global.aria_sync_log_dir; 31@@global.aria_sync_log_dir 32NEWFILE 33set global aria_sync_log_dir=always; 34select @@global.aria_sync_log_dir; 35@@global.aria_sync_log_dir 36ALWAYS 37set global aria_sync_log_dir=1.1; 38ERROR 42000: Incorrect argument type to variable 'aria_sync_log_dir' 39set global aria_sync_log_dir=1e1; 40ERROR 42000: Incorrect argument type to variable 'aria_sync_log_dir' 41set global aria_sync_log_dir="foo"; 42ERROR 42000: Variable 'aria_sync_log_dir' can't be set to the value of 'foo' 43set global aria_sync_log_dir=3; 44ERROR 42000: Variable 'aria_sync_log_dir' can't be set to the value of '3' 45SET @@global.aria_sync_log_dir = @start_global_value; 46