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根据表列之一中的特定输入获取多个MySQL行？

2024-04-27 17:12:05 343

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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根据表列之一中的特定输入获取多个MySQL行？

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