Sample File

 I've created an Excel workbook with sample data for practicing the SQL scenarios.

You can use this dataset to practice:

• Joins
• Subqueries
• Window Functions
• Ranking
• Running Totals
• LAG/LEAD
• Duplicate Detection
• Customer & Sales Analytics
• ETL Validation Scenarios

Employee

Department

Customer 

Orders

Products

Order Details

Sales

Salary History