SQL Cursor is very handy to execute a loop in SQL, especially inside of a stored procedure.

Let’s look at a simple example to understand how it works.

USE AdventureWorks
GO;

DECLARE @ProductID INT
DECLARE @getProductID CURSOR
SET @getProductID = CURSOR FOR
    SELECT ProductID
    FROM Production.Product
    
OPEN @getProductID
FETCH NEXT FROM @getProductID INTO @ProductID  

WHILE @@FETCH_STATUS = 0  
BEGIN  
    PRINT @ProductID  
    
    FETCH NEXT FROM @getProductID INTO @ProductID  
END  

CLOSE @getProductID  
DEALLOCATE @getProductID  
GO;