SET DEFAULT_STORAGE_ENGINE='tokudb'; DROP TABLE IF EXISTS foo; set session tokudb_disable_slow_alter=ON; create table foo (a int, b int, c int, d int as (a mod 10) virtual, key(a))engine=TokuDB; ERROR HY000: TokuDB storage engine does not support computed columns create table foo (a int, b int, c int)engine=TokuDB; alter table foo add column d int as (a mod 10) virtual; ERROR HY000: TokuDB storage engine does not support computed columns alter table foo add column d int as (a mod 10) persistent; ERROR HY000: TokuDB storage engine does not support computed columns drop table foo;