SQL Server View is a virtual table derived from one or more tables or other views. It does not store data itself but rather represents a stored SQL query that dynamically retrieves data from its underlying tables whenever the view is queried. Example Employees Table: EmployeeID FirstName LastName DepartmentID Salary 1 John Smith 1 50000 2 Jane Doe 2 60000 3 Michael Johnson 1 55000 4 Emily Brown 3 52000 Departments Table: DepartmentID DepartmentName 1 HR 2 Finance 3 IT Now, let's create a view that shows the employees along with their department names: In this example: We create a view named EmployeeDetails.The view selects columns EmployeeID, FirstName, LastName, DepartmentName, and Salary from the Employees table (e) and the Departments table (d).It joins the Employees table with the Departments table based on the DepartmentID column to retrieve the department name for each employee.The EmployeeDetails view now provides a consolidated view of employee details along with their department names. After creating the view, you can query it just like a regular table: Read more Why do you use SQL Command and Queries in SQL Server? What is SQL Database and why is it so popular? Write a query to retrieve the total number of employees in each department.

Products

Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller

Developer

Article Blog Forum Interview Beginner News Startup Quiz

Users

Career

Apply Job Internship

Pricing

What are SQL Views?

Ravi Vishwakarma 858 03 Jul 2024

1 Answers

Ravi Vishwakarma 03 Jul 2024

SQL Server View is a virtual table derived from one or more tables or other views. It does not store data itself but rather represents a stored SQL query that dynamically retrieves data from its underlying tables whenever the view is queried.

Example

Employees Table:

EmployeeID	FirstName	LastName	DepartmentID	Salary
1	John	Smith	1	50000
2	Jane	Doe	2	60000
3	Michael	Johnson	1	55000
4	Emily	Brown	3	52000

Departments Table:

DepartmentID	DepartmentName
1	HR
2	Finance
3	IT

Now, let's create a view that shows the employees along with their department names:

-- Create a view to show employees with department names
CREATE VIEW EmployeeDetails AS
SELECT e.EmployeeID, e.FirstName, e.LastName, d.DepartmentName, e.Salary
FROM Employees e
JOIN Departments d ON e.DepartmentID = d.DepartmentID;

In this example:

We create a view named EmployeeDetails.
The view selects columns EmployeeID, FirstName, LastName, DepartmentName, and Salary from the Employees table (e) and the Departments table (d).
It joins the Employees table with the Departments table based on the DepartmentID column to retrieve the department name for each employee.
The EmployeeDetails view now provides a consolidated view of employee details along with their department names.

After creating the view, you can query it just like a regular table:

-- Query the EmployeeDetails view
SELECT *
FROM EmployeeDetails;

What is SQL Database and why is it so popular?

Write a query to retrieve the total number of employees in each department.

Markdown for AI

A clean, structured version of this page for AI assistants and LLMs.

Open .md

interview

What are SQL Views?

Can you answer this question?

1 Answers