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class AddRoleIdToUsers < ActiveRecord::Migration[6.1]
disable_ddl_transaction!
def change
safety_assured { add_reference :users, :role, foreign_key: { to_table: 'user_roles', on_delete: :nullify }, index: false }
add_index :users, :role_id, algorithm: :concurrently, where: 'role_id IS NOT NULL'
end
end
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