DROP TABLE IF EXISTS t; SET SESSION TOKUDB_DISABLE_SLOW_ALTER=ON; SET SESSION DEFAULT_STORAGE_ENGINE='TokuDB'; CREATE TABLE t (a CHAR(100)); ALTER TABLE t CHANGE COLUMN a a CHAR(1) CHARACTER SET latin1 COLLATE latin1_general_cs; ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ALTER TABLE t CHANGE COLUMN a a CHAR(100) CHARACTER SET latin1 COLLATE latin1_general_cs; ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ALTER TABLE t CHANGE COLUMN a a CHAR(255) CHARACTER SET latin1 COLLATE latin1_general_cs; ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version DROP TABLE t; CREATE TABLE t (a CHAR(100) CHARACTER SET latin1 COLLATE latin1_general_cs); ALTER TABLE t CHANGE COLUMN a a CHAR(1); ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ALTER TABLE t CHANGE COLUMN a a CHAR(100); ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ALTER TABLE t CHANGE COLUMN a a CHAR(255); ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version DROP TABLE t;