พวกเขาทำงานหนักแค่ไหนเพื่อตัวแทน?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How hard did they work for their rep?.It is not neccessary to use all the tables.
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SELECT Users.DisplayName, SUM(LENGTH(Body)) * 1.0 / Reputation AS "letters_per_rep_point" FROM Posts INNER JOIN Users ON Posts.OwnerUserId = Users.Id WHERE Reputation > '##repthreshold##' GROUP BY Users.DisplayName, Reputation ORDER BY 2