Mastering SQL | A Step-by-Step Guide to Preppin' Data 2023, Week 10

In this video, we'll tackle Preppin' Data 2023, Week 10.

These challenges contain help us solve common problems faced by data analysts: Whether you're a beginner or have some experience with SQL, this walkthrough will provide you with practical skills to solve similar problems in your own work.

Timestamps:
00:00 - Intro
00:29 - Adding Week 9's solution
01:05 - Aggregate the data
03:55 - Scaffold the data
05:48 - New rows have a null in the Transaction Value
10:24 - Create a parameter (variable)
11:16 - Filter to parameter (variable) date
12:20 - Tidy up and Outro

Key Concepts Covered:
1. Recursive Common Table Expressions
2. Data Scaffolding
3. Setting Variables

Resources and Links:
This challenge: https://preppindata.blogspot.com/2023...
All challenges: https://preppindata.blogspot.com/p/th...
My solution: https://github.com/wjsutton/preppin-d...

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