Creating Basic SQL Reports in SQL Server

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17/19 Question 2

1. Introduction

2. Multi-level aggregation – introduction

3. Multi-level aggregation – explanation

4. Multi-level aggregation – step 1

5. Multi-level aggregation – step 2

6. Multi-level aggregation – exercise

7. Alternative syntax

8. Multi-level aggregation in groups – theory

9. Multi-level aggregation in groups – exercise 1

10. Multi-level aggregation in groups – exercise 2

11. Multi-level aggregation with CASE WHEN – theory

12. Multi-level aggregation with CASE WHEN – exercise

13. Three aggregation levels – example 1

14. Three aggregation levels – example 2

Very well done! On to the next question!

Find the average order value (after discount) for each customer. Show the CustomerID and AvgDiscountedPrice columns.

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