ndb_minmax.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- 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;