1.select * from tbl_actor order by (follower_count+Recommend_weight)*weight_ratio desc limit 3;
2.order by (follower_count+Recommend_weight)*weight_ratio
3.可用于根据权值，做推荐列表用。
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1.select * from tbl_actor order by (follower_count+Recommend_weight)*weight_ratio desc limit 3;
2.order by (follower_count+Recommend_weight)*weight_ratio
3.可用于根据权值，做推荐列表用。
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