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SQL joins

Combine related tables without losing or accidentally multiplying records.

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Where this chapter sits in the course

Lessons

Chapter 11 of 30 · 6 short lessons · 25 min
  1. 1Table relationships3 min
  2. 2Inner joins4 min
  3. 3Left joins4 min
  4. 4Join validation4 min
  5. 5Aggregation after joins4 min
  6. 6Challenge: SQL joins6 min

What you'll learn

  • Identify keys and relationships between tables
  • Combine tables with inner and left joins
  • Validate joined records and measures

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