รัฐไหนมีรายได้สูงสุด?ไม่จำเป็นต้องใช้ทุกตาราง
Which state get the highest revenue?It is not neccessary to use all the tables.
 finrev_fed_key_17:  state_code [ number]  state [ text]  #_records [ text] 
SELECT T2.state FROM finrev_fed_key_17 AS T2 JOIN finrev_fed_17 AS T1 ON T1.state_code = T2.state_code GROUP BY T2.state ORDER BY SUM(t_fed_rev) DESC LIMIT 1