config root man

drop table if exists t1, t2;
CREATE TABLE t1 (
a int PRIMARY KEY
) engine = ndb;
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (2);
INSERT INTO t1 VALUES (3);
INSERT INTO t1 VALUES (4);
INSERT INTO t1 VALUES (5);
INSERT INTO t1 VALUES (6);
select MAX(a) from t1;
MAX(a)
6
select MAX(a) from t1;
MAX(a)
6
select MAX(a) from t1;
MAX(a)
6
select MAX(a) from t1;
MAX(a)
6
select MIN(a) from t1;
MIN(a)
1
select MIN(a) from t1;
MIN(a)
1
select MIN(a) from t1;
MIN(a)
1
select * from t1 order by a;
a
1
2
3
4
5
6
select MIN(a) from t1;
MIN(a)
1
select MAX(a) from t1;
MAX(a)
6
select MAX(a) from t1;
MAX(a)
6
select * from t1 order by a;
a
1
2
3
4
5
6
drop table t1;
CREATE TABLE t2 (
a int PRIMARY KEY,
b int not null,
c int not null,
KEY(b),
UNIQUE(c)
) engine = ndb;
INSERT INTO t2 VALUES (1, 5, 1);
INSERT INTO t2 VALUES (2, 2, 7);
INSERT INTO t2 VALUES (3, 3, 3);
INSERT INTO t2 VALUES (4, 4, 4);
INSERT INTO t2 VALUES (5, 5, 5);
INSERT INTO t2 VALUES (6, 6, 6);
INSERT INTO t2 VALUES (7, 2, 10);
INSERT INTO t2 VALUES (8, 10, 2);
select MAX(a) from t2;
MAX(a)
8
select MAX(b) from t2;
MAX(b)
10
select MAX(c) from t2;
MAX(c)
10
select MIN(a) from t2;
MIN(a)
1
select MIN(b) from t2;
MIN(b)
2
select MIN(c) from t2;
MIN(c)
1
select * from t2 order by a;
a	b	c
1	5	1
2	2	7
3	3	3
4	4	4
5	5	5
6	6	6
7	2	10
8	10	2
select MIN(b) from t2;
MIN(b)
2
select MAX(a) from t2;
MAX(a)
8
select MAX(c) from t2;
MAX(c)
10
select * from t2 order by a;
a	b	c
1	5	1
2	2	7
3	3	3
4	4	4
5	5	5
6	6	6
7	2	10
8	10	2
drop table t2;