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Troubleshooting and Solving Data Join Pitfalls

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Overview

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This lab focuses on how to reverse-engineer the relationships between data tables and the pitfalls to avoid when joining them together.

Syllabus

  • GSP412
  • Overview
  • Setup
  • Task 1. Create a new dataset to store your tables
  • Task 2. Pin the lab project in BigQuery
  • Task 3. Examine the fields
  • Task 4. Identify a key field in your ecommerce dataset
  • Task 5. Pitfall: non-unique key
  • Task 6. Join pitfall solution: use distinct SKUs before joining
  • Congratulations!

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