質問編集履歴
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コードタグ追加
test
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test
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SQL
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---
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```sql
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SELECT * FROM episodes
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ORDER BY episodes.updated_at DESC
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```
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---
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-----
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```ruby
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1 class AnimeMaster < ActiveRecord::Base
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2 has_many:episodes,:dependent => :destroy
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3 end
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```
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---
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```ruby
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1 class Episode < ActiveRecord::Base
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2 belongs_to :anime_master
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3 end
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```
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---
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---
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```ruby
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Episode.includes(:anime_master)
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.joins(:anime_master)
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.merge(AnimeMaster.where(state:1))
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.order('episodes.updated_at desc')
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```
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