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Earlier also we could have done that without N+1 queries in this way:
Product.where(“price >= ?”, 100).update_all(created_at: Time.now)
Also Product.where(“price >= ?”, 100).touch_all would generate the same SQL query as the way.
Please correct me if I’m wrong or missing something.
The implementation of touch_all is here https://github.com/rails/rails/blob/master/activerecord/lib/active_record/relation.rb#L524
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