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13 lines
602 B
13 lines
602 B
class SyncAvergerStarToShixun < ActiveRecord::Migration[5.2]
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def change
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Shixun.find_each do |shixun|
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averge_star = Game.find_by_sql("select ifnull(sum(g.star),0)/ifnull(count(*),1) as averge_star from (games g left join
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(myshixuns m join shixuns s on s.id = m.shixun_id) on m.id = g.myshixun_id)
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where star != 0 and s.id = #{shixun.id}").first.try(:averge_star)
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averge_star = averge_star || 5
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puts(averge_star)
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shixun.update_column(:averge_star, averge_star.round(1))
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end
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end
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end
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