How to create a view in Navicat

Create a view in Navicat: Connect to the database and right-click the "View" node. Select New View or New > View. Enter the view name and the SQL query that defines the data and columns in the view. Select OK to create the view. Example: To create a view named "Customer Order": CREATE VIEW Customer Order AS SELECT Customer Name, Order Date, SUM (Order Amount) AS Total Amount FROM Customer Table, Order Table WHERE Customer Table. Customer ID = Order Table. Customer ID GROUP BY customer name, order date;

#Create a view in Navicat

The view is a virtual table , which is created based on data from one or more tables, but does not store the actual data itself. Views are used to provide a specific perspective on data, simplify queries, and improve performance.

Steps:

1. Open Navicat and connect to the database.
2. In the Objects tab, right-click the Views node and select New View or New > View.
3. Enter the view name in the Create View dialog box.
4. In the "Definition" field, write the SQL query for the view. The query should select the required data and define the columns of the view.

<code class="sql">CREATE VIEW 视图名称 AS
SELECT 列名1, 列名2, ...
FROM 表名1, 表名2, ...
WHERE 条件;</code>

5. Select OK to create the view.

Example:

To create a view called "Customer Orders" that displays the customer name, order date, and order total amount, you You can use the following SQL query:

<code class="sql">CREATE VIEW 客户订单 AS
SELECT 客户姓名, 订单日期, SUM(订单金额) AS 总金额
FROM 客户表, 订单表
WHERE 客户表.客户ID = 订单表.客户ID
GROUP BY 客户姓名, 订单日期;</code>

After creating a view, you can use it like a normal table for query, update, and delete operations.ただし、Changing the data in the view will not affect the data in the underlying table.

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