Mysql 简明教程
MySQL - Rename View
Renaming Views in MySQL
MySQL 中的 MySQL RENAME TABLE 语句通常用于重命名表的名称。但此语句还可以用于重命名视图，因为视图通常是通过查询创建的虚拟表。
The MySQL RENAME TABLE statement in MySQL is generally used to rename the name of a table. But this statement can also be used to rename views because views are typically virtual tables created by a query.
在重命名视图之前，我们需要确保不使用其旧名称对该视图执行任何活动事务。不过，建议删除现有的视图，并使用新名称重新创建它，而不是重命名它。
Before renaming a view, we need to ensure that no active transactions are being performed on the view using its old name. It is, however, recommended to delete the existing view and re-create it with a new name instead of renaming it.
Syntax
以下是用于在 MySQL 中重命名视图的 RENAME TABLE 查询的基本语法 -
Following is the basic syntax of the RENAME TABLE query to rename a view in MySQL −
RENAME TABLE original_view_name
TO new_view_name;Example
首先，让我们使用以下查询创建一个名为 CUSTOMERS 的表 -
First of all, let us create a table with the name CUSTOMERS using the following query −
CREATE TABLE CUSTOMERS(
ID int NOT NULL,
NAME varchar(20) NOT NULL,
AGE int NOT NULL,
ADDRESS varchar(25),
SALARY decimal(18, 2),
PRIMARY KEY (ID)
);在这里，我们使用以下查询向上述创建的表中插入一些记录 -
Here, we are inserting some records into the above-created table using the query below −
INSERT INTO CUSTOMERS VALUES
(1, 'Ramesh', '32', 'Ahmedabad', 2000),
(2, 'Khilan', '25', 'Delhi', 1500),
(3, 'Kaushik', '23', 'Kota', 2500),
(4, 'Chaitali', '26', 'Mumbai', 6500),
(5, 'Hardik','27', 'Bhopal', 8500),
(6, 'Komal', '22', 'MP', 9000),
(7, 'Muffy', '24', 'Indore', 5500);Creating a view −
Creating a view −
现在，让我们使用以下查询基于上述创建的表创建一个视图 -
Now, let us create a view based on the above created table using the following query −
CREATE VIEW CUSTOMERS_VIEW AS SELECT * FROM CUSTOMERS;视图将按如下方式创建：
The view will be created as follows −
Renaming the view −
Renaming the view −
现在，我们知道我们的数据库中有一个名为 "CUSTOMERS_VIEW" 的现有视图。因此，我们将使用以下查询将此视图重命名为 VIEW_CUSTOMERS -
Now, we know that we are having an existing view in our database named "CUSTOMERS_VIEW". So, we are going to rename this view to VIEW_CUSTOMERS using the below query −
RENAME TABLE CUSTOMERS_VIEW TO VIEW_CUSTOMERS;Rules to be followed while Renaming Views
为了确保重命名过程顺利进行，并应在 MySQL 中重命名视图时遵循一些规则和做法。它们列在下面：
There are some rules and practices to ensure that the renaming process goes smoothly and one should follow them while renaming a view in MySQL. They are listed below:
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Avoid renaming system views: In MySQL, the system views are views that contain all the information about the database management system. It is recommended not to rename these views because it can cause issues with the functioning of the database.
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Update all references to the view: After renaming a view in MySQL, any stored procedures, triggers, or other database objects that reference the view will need to be updated to use the new name of the view. If we failed to update these references results in errors or issues with the functioning of the database system.
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Test thoroughly: It is important to test the renaming process thoroughly in the development or testing environment to make sure that all references to the view have been updated correctly.
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Use a consistent naming convention: While working with views in MySQL, it’s recommended to use a consistent naming convention. If you need to rename a view, follow the same naming convention you’ve used for other views in the database.
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Backup the database: Before renaming a view, it is recommended to have a backup of the database to make sure that you have a restore point.