SET STORAGE_ENGINE = 'tokudb';
DROP TABLE IF EXISTS foo;
create table foo (a int, b int, c int, primary key (a), key (b));
insert into foo values (1,100,1),(2,20,2),(3,300,3),(4,4,4);
select * from foo;
a	b	c
1	100	1
2	20	2
3	300	3
4	4	4
select b from foo;
b
4
20
100
300
delete from foo where b=20;
select * from foo;
a	b	c
1	100	1
3	300	3
4	4	4
select b from foo;
b
4
100
300
alter table foo drop index b;
delete from foo where a=3;
select * from foo;
a	b	c
1	100	1
4	4	4
DROP TABLE foo;