1DROP TABLE IF EXISTS t; 2SET SESSION TOKUDB_DISABLE_SLOW_ALTER=ON; 3SET SESSION DEFAULT_STORAGE_ENGINE='TokuDB'; 4CREATE TABLE t (a VARCHAR(32), b VARCHAR(32), KEY(a(2))); 5SHOW CREATE TABLE t; 6Table Create Table 7t CREATE TABLE `t` ( 8 `a` varchar(32) DEFAULT NULL, 9 `b` varchar(32) DEFAULT NULL, 10 KEY `a` (`a`(2)) 11) ENGINE=TokuDB DEFAULT CHARSET=latin1 12ALTER TABLE t CHANGE COLUMN a a VARCHAR(100); 13ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version 14ALTER TABLE t CHANGE COLUMN a a VARCHAR(256); 15ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version 16DROP TABLE t; 17