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  3. Data-Driven Decision Making in SQL
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अभ्यास

Summarizing customer information

In most business decisions customers are analyzed in groups, such as customers per country or customers per age group.

निर्देश 1/3

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  • 1
    • Count the number of customers born in the 80s.
  • 2
    • Count the number of customers from Germany.
  • 3
    • Count the number of countries where MovieNow has customers.