SQL question You have given two table users and address and a user has many addresses, writes its association and SQL query then writes ORM query.

Question

Anonymous · Accepted Answer

Ans: there has_many relationships between the two.

User < ApplicationRecord
 has_many :address, class_name: "Address", foreign_key: :user_id, dependent: :destroy
end 
Address < ApplicationRecord
 belongs_to :user 
end

SQL: Select address* from users left_join addresses where user.id = address.user_id.
ORM: User.include(:address).

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