根据表列之一中的特定输入获取多个MySQL行?
让我们首先创建一个表-
mysql> create table DemoTable1528-> (
-> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
-> StudentName varchar(20),
-> StudentSubject varchar(20)
-> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Chris','MongoDB');mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Bob','MySQL');
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('David','Java');
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Carol','C');
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Sam','Java');
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Mike','Java');
mysql> insert into DemoTable1528(StudentName,StudentSubject) values('Adam','MySQL');
使用select语句显示表中的所有记录-
mysql> select * from DemoTable1528;
这将产生以下输出-
+-----------+-------------+----------------+| StudentId | StudentName | StudentSubject |
+-----------+-------------+----------------+
| 1 | Chris | MongoDB |
| 2 | Bob | MySQL |
| 3 | David | Java |
| 4 | Carol | C |
| 5 | Sam | Java |
| 6 | Mike | Java |
| 7 | Adam | MySQL |
+-----------+-------------+----------------+
7 rows in set (0.00 sec)
以下是根据表列之一中的特定输入获取多个MySQL行的查询。在这里,我们的具体输入是“ Java”-
mysql> select StudentId,StudentName,StudentSubject from DemoTable1528 where StudentSubject='Java';
这将产生以下输出-
+-----------+-------------+----------------+| StudentId | StudentName | StudentSubject |
+-----------+-------------+----------------+
| 3 | David | Java |
| 5 | Sam | Java |
| 6 | Mike | Java |
+-----------+-------------+----------------+
3 rows in set (0.00 sec)
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