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Creating Basic SQL Reports in PostgreSQL

Introduction
Providing detailed information and counting objects
Calculating metrics for multiple business objects
Understanding the difference between various count metrics
Summary
16. Question 2

Instruction

Great work! Let's try something a little harder...

Exercise

Show three kinds of information about product suppliers:

  1. all_suppliers (the total number of suppliers)
  2. suppliers_region_assigned (the total number of suppliers who are assigned to a region)
  3. unique_supplier_regions (the number of unique regions suppliers are assigned to)

Stuck? Here's a hint!