1SET @start_global_value = @@global.innodb_large_prefix; 2SELECT @start_global_value; 3@start_global_value 40 5Valid values are 'ON' and 'OFF' 6select @@global.innodb_large_prefix in (0, 1); 7@@global.innodb_large_prefix in (0, 1) 81 9select @@global.innodb_large_prefix; 10@@global.innodb_large_prefix 110 12select @@session.innodb_large_prefix; 13ERROR HY000: Variable 'innodb_large_prefix' is a GLOBAL variable 14show global variables like 'innodb_large_prefix'; 15Variable_name Value 16innodb_large_prefix OFF 17show session variables like 'innodb_large_prefix'; 18Variable_name Value 19innodb_large_prefix OFF 20select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 21VARIABLE_NAME VARIABLE_VALUE 22INNODB_LARGE_PREFIX OFF 23select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 24VARIABLE_NAME VARIABLE_VALUE 25INNODB_LARGE_PREFIX OFF 26set global innodb_large_prefix='OFF'; 27select @@global.innodb_large_prefix; 28@@global.innodb_large_prefix 290 30select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 31VARIABLE_NAME VARIABLE_VALUE 32INNODB_LARGE_PREFIX OFF 33select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 34VARIABLE_NAME VARIABLE_VALUE 35INNODB_LARGE_PREFIX OFF 36set @@global.innodb_large_prefix=1; 37select @@global.innodb_large_prefix; 38@@global.innodb_large_prefix 391 40select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 41VARIABLE_NAME VARIABLE_VALUE 42INNODB_LARGE_PREFIX ON 43select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 44VARIABLE_NAME VARIABLE_VALUE 45INNODB_LARGE_PREFIX ON 46set global innodb_large_prefix=0; 47select @@global.innodb_large_prefix; 48@@global.innodb_large_prefix 490 50select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 51VARIABLE_NAME VARIABLE_VALUE 52INNODB_LARGE_PREFIX OFF 53select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 54VARIABLE_NAME VARIABLE_VALUE 55INNODB_LARGE_PREFIX OFF 56set @@global.innodb_large_prefix='ON'; 57select @@global.innodb_large_prefix; 58@@global.innodb_large_prefix 591 60select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 61VARIABLE_NAME VARIABLE_VALUE 62INNODB_LARGE_PREFIX ON 63select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 64VARIABLE_NAME VARIABLE_VALUE 65INNODB_LARGE_PREFIX ON 66set session innodb_large_prefix='OFF'; 67ERROR HY000: Variable 'innodb_large_prefix' is a GLOBAL variable and should be set with SET GLOBAL 68set @@session.innodb_large_prefix='ON'; 69ERROR HY000: Variable 'innodb_large_prefix' is a GLOBAL variable and should be set with SET GLOBAL 70set global innodb_large_prefix=1.1; 71ERROR 42000: Incorrect argument type to variable 'innodb_large_prefix' 72set global innodb_large_prefix=1e1; 73ERROR 42000: Incorrect argument type to variable 'innodb_large_prefix' 74set global innodb_large_prefix=2; 75ERROR 42000: Variable 'innodb_large_prefix' can't be set to the value of '2' 76NOTE: The following should fail with ER_WRONG_VALUE_FOR_VAR (BUG#50643) 77set global innodb_large_prefix=-3; 78select @@global.innodb_large_prefix; 79@@global.innodb_large_prefix 801 81select * from information_schema.global_variables where variable_name='innodb_large_prefix'; 82VARIABLE_NAME VARIABLE_VALUE 83INNODB_LARGE_PREFIX ON 84select * from information_schema.session_variables where variable_name='innodb_large_prefix'; 85VARIABLE_NAME VARIABLE_VALUE 86INNODB_LARGE_PREFIX ON 87set global innodb_large_prefix='AUTO'; 88ERROR 42000: Variable 'innodb_large_prefix' can't be set to the value of 'AUTO' 89SET @@global.innodb_large_prefix = @start_global_value; 90SELECT @@global.innodb_large_prefix; 91@@global.innodb_large_prefix 920 93