สร้างตารางชั่วคราว

-- To clear table if it already exists; fill in name of temp table
DROP TABLE IF EXISTS ___;

-- Create the temporary table
___ ___ ___ ___ AS 
  -- Select the two columns you need; alias as needed
  SELECT ___, 
         ___(___) ___ (___) AS ___
    -- What table are you getting the data from?
    ___ ___
   -- What do you need to group by?
   ___ ___ ___;
   
-- See what you created: select all columns and rows from the table you created
SELECT * 
  FROM ___;