# test sorted by primary key create table `pk_case_0` (a int primary key, b int); insert into `pk_case_0` values (0, 10), (1, 9), (2, 8), (3, 7), (4, 6), (5, 5), (6, 4), (7, 3), (8, 2), (9, 1), (10, 0);