SET STORAGE_ENGINE = 'tokudb'; DROP TABLE IF EXISTS foo; create table foo (a int, b bigint, c int, primary key (a))engine=TokuDB; insert into foo values (1,10,100),(2,20,200),(3,30,300),(4,40,400),(5,50,500),(6,60,600); select * from foo; a b c 1 10 100 2 20 200 3 30 300 4 40 400 5 50 500 6 60 600 select a from foo; a 1 2 3 4 5 6 select * from foo where a > 2; a b c 3 30 300 4 40 400 5 50 500 6 60 600 select a from foo where a > 2; a 3 4 5 6 select count(*) from foo; count(*) 6 alter table foo add index b(b); select b from foo; b 10 20 30 40 50 60 explain select * from foo where b > 30; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo range b b 9 NULL 3 Using where select * from foo where b > 30; a b c 4 40 400 5 50 500 6 60 600 alter table foo drop index b; alter table foo add clustering index c(c); select c from foo; c 100 200 300 400 500 600 explain select * from foo where c > 300; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE foo range c c 5 NULL 3 Using where select * from foo where c > 300; a b c 4 40 400 5 50 500 6 60 600 drop table foo; create table foo (a int, b int); insert into foo values (1,10),(2,20),(3,30),(4,40),(5,50),(6,60); select * from foo; a b 1 10 2 20 3 30 4 40 5 50 6 60 select a from foo; a 1 2 3 4 5 6 select b from foo; b 10 20 30 40 50 60 select count(*) from foo; count(*) 6 drop table foo; create table foo (a int, b varchar(10), c blob, d bigint, e varchar(10), f mediumblob)engine=TokuDB; insert into foo values(1,"bb","ccccc",100,"eee","fffffffffffffffffffff"); select * from foo; a b c d e f 1 bb ccccc 100 eee fffffffffffffffffffff select a,d from foo; a d 1 100 select b,e from foo; b e bb eee select c,f from foo; c f ccccc fffffffffffffffffffff select d from foo; d 100 select e from foo; e eee select f from foo; f fffffffffffffffffffff select a from foo; a 1 select b from foo; b bb select c from foo; c ccccc select b,c,e,f from foo; b c e f bb ccccc eee fffffffffffffffffffff select a,b,d,e from foo; a b d e 1 bb 100 eee select a,d,c,f from foo; a d c f 1 100 ccccc fffffffffffffffffffff DROP TABLE foo;