query: SELECT sum(Rating_in_percent) ,  OWNER FROM channel GROUP BY OWNER
question: Find the total rating ratio for each channel owner.
query_toks: SELECT sum ( Rating_in_percent ) , OWNER FROM channel GROUP BY OWNER
query_toks_no_value: select sum ( rating_in_percent ) , owner from channel group by owner
question_toks: Find the total rating ratio for each channel owner.