如何使用带WHERE子句的MySQL VIEW？

对于带有WHERE子句的MySQL VIEW，语法如下:

select * from yourViewName where yourColumnName='yourValue';

首先让我们创建一个表:

mysql> create table DemoTable1432
     -> (
     -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
     -> StudentName varchar(20),
     -> StudentBranchName varchar(20)
     -> );
Query OK, 0 rows affected (1.26 sec)

使用insert方法向表中插入一些记录:

mysql> insert into DemoTable1432(StudentName,StudentBranchName) values('Chris','CS');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable1432(StudentName,StudentBranchName) values('David','CE');
Query OK, 1 row affected (0.23 sec)
mysql> insert into DemoTable1432(StudentName,StudentBranchName) values('Mike','ME');
Query OK, 1 row affected (0.20 sec)

使用select方法展示表中的所有记录:

mysql> select * from DemoTable1432;

将会产生以下输出:

+-----------+-------------+-------------------+
| StudentId | StudentName | StudentBranchName |
+-----------+-------------+-------------------+
|         1 | Chris       | CS                |
|         2 | David       | CE                |
|         3 | Mike        | ME                |
+-----------+-------------+-------------------+
3 rows in set (0.00 sec)

以下是创建视图的查询:

mysql> create view DemoTable1432_View as select * from DemoTable1432;
Query OK, 0 rows affected (0.17 sec)

以下是使用带WHERE子句的MySQL视图的查询:

mysql> select * from DemoTable1432_View where StudentBranchName='CS';

将会产生以下输出:

+-----------+-------------+-------------------+
| StudentId | StudentName | StudentBranchName |
+-----------+-------------+-------------------+
|         1 | Chris       | CS                |
+-----------+-------------+-------------------+
1 row in set (0.03 sec)

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