SET DEFAULT_STORAGE_ENGINE = 'tokudb'; DROP TABLE IF EXISTS foo; set session tokudb_disable_slow_alter=ON; create table foo (a int NOT NULL, b int, c int)engine=TokuDB; insert into foo values(1,10,100),(2,20,200),(3,30,300); alter table foo add column d text; select * from foo; a b c d 1 10 100 NULL 2 20 200 NULL 3 30 300 NULL drop table foo;