Compute Unnormalized Shapley Values from CVS and ACVS Table - Aster Analytics

SELECT player, SUM(partial_avg) / 5 AS shapley_value FROM (
  SELECT player, size, SUM(partial_value) AS partial_avg FROM (
    SELECT player,
      (atrbtn_cvs.value - atrbtn_acvs.value) / divisor AS partial_value,
       atrbtn_acvs.size AS size
       FROM atrbtn_cvs INNER JOIN atrbtn_acvs
         ON (atrbtn_cvs.comb = atrbtn_acvs.comb2)
  ) AS stratum
  GROUP BY player, size) AS stratum_avg
GROUP BY player ORDER BY player;