text: # Write your MySQL query statement below
  # #Easy #Database #SQL_I_Day_3_String_Processing_Functions
  # #2022_04_06_Time_395_ms_(77.20%)_Space_0B_(100.00%)
  SELECT sell_date, COUNT(DISTINCT(product)) as num_sold, GROUP_CONCAT(DISTINCT(product) ORDER BY product) as products
  FROM Activities
  GROUP BY sell_date
  