SQL Server Part3- Advance Level

SQL Server Part3- Advance Level free download

SQL Server Joins : Deep Dive into every type of Joins including Self Joins and how to manipulate them

What You Will Learn from This Module on Joins and Advanced Querying:

1. Master Table Relationships with Joins
   Learn how INNER, LEFT, RIGHT, and FULL OUTER joins help you connect data across multiple tables and handle matching/non-matching records.

2. Understand Real-World Scenarios with Nested and Self Joins
   Explore how to join a table to itself (self join) and use nested joins to handle multi-step relationships—useful for hierarchy or historical data.

3. Perform Calculations Within Joins
   Discover how to add, subtract, or transform fields during joins to create powerful and meaningful query results, such as calculating differences between related rows.

4. Combine Data Sets with UNION and UNION ALL
   Learn how to merge results from multiple queries into a single output, understanding the difference between UNION (removes duplicates) and UNION ALL (keeps all records).

5. Joins for Real-World Data Linking

   • Mini Use-Case: Fetch customer orders by linking Customers and Orders using INNER JOIN, show all customers with or without orders using LEFT JOIN.

     • “Joins Made Easy!”

     • “Link Tables Like a Pro”

     • “LEFT vs RIGHT JOIN: Real Examples”

6. Compare employee salaries with their managers using self join, or pull data across 3+ related tables using nested joins.

   • “Self Join Demystified!”

   • “Nested Joins: Step-by-Step”

   • “Compare  the Employees to Managers  tables with SQL!  ”