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10. Min and max spend medium


  • Write a query to return the minimum and maximum customer total spend in June 2020.
  • For each customer, first calculate their total spend in June 2020.
  • Then use MIN, and MAX function to return the min and max customer spend .

Table: payment

Movie rental payment transactions table

   col_name   | col_type
 payment_id   | integer
 customer_id  | smallint
 staff_id     | smallint
 rental_id    | integer
 amount       | numeric
 payment_ts   | timestamp with time zone


Sample results

min_spend | max_spend
      0.99 |     52.90