Cursors in SQL server Explained Step by Step with Example #sql #sqltutorial

In this video, we will learn what a cursor is in SQL Server and how it works with a real-time example.

A cursor is used to process data row by row instead of handling all rows at once like a normal SQL query. In this tutorial, we will understand the complete cursor life cycle including DECLARE, OPEN, FETCH, LOOP, CLOSE, and DEALLOCATE.

🎯 What you will learn in this video:
What is a Cursor in SQL Server
Why and when to use a cursor
Step-by-step cursor life cycle
Real example using Employees table
How FETCH works in SQL Server
Difference between row-by-row and set-based processing
Why cursors are slower than normal queries
🧠 Example Covered:

We take an Employees table and use a cursor to:

Read each employee record one by one
Display Employee Name and Salary
Understand how SQL Server processes data sequentially
⚡ Key Concept:

SQL Server is optimized for set-based operations, but cursors are used when row-by-row processing is required.

📌 Cursor Life Cycle Covered:

DECLARE → OPEN → FETCH → WHILE LOOP → CLOSE → DEALLOCATE

👍 Who should watch this?
Beginners learning SQL Server
Students preparing for interviews
Developers who want to understand cursors clearly
Anyone confused about row-by-row processing in SQL
🔔 Stay Connected:

If you found this video helpful, please like 👍, share 🔁, and subscribe for more SQL Server tutorials.

#SQLServer #SQLTutorial #Cursor #SQLInterviewQuestions #Database #LearnSQL #SQLForBeginners #programmingtutorial

SQL scripts
CREATE TABLE Employees (
EmployeeID INT,
EmployeeName VARCHAR(50),
Salary INT
);

INSERT INTO Employees VALUES
(1, 'Aman', 40000),
(2, 'Rahul', 50000),
(3, 'Priya', 60000);
Cursor scripts
Declare Employee_cursor cursor
for
Select EmployeeName,Salary
from Employees;

Declare @name varchar(20);
Declare @Salary int;

open Employee_cursor

Fetch next from Employee_cursor
into @name,@Salary ;

while @@FETCH_STATUS=0
begin
Print @name + ' earns ' + cast(@salary as varchar);
Fetch next from Employee_cursor into @name,@Salary;

end
close Employee_cursor;
deallocate Employee_cursor;

Видео Cursors in SQL server Explained Step by Step with Example #sql #sqltutorial канала SQLCodeClarity