Delete duplicated records in Rails

DeleteDuplicated.rb

Product.group_by{|x| [x.legacy_id, x.company]}
       .flat_map{|_,x| x.drop(1)}
       .delete_all

Product.where.not(id: Product.group(:legacy_id, :company).pluck('min(products.id)'))
       .delete_all

delete from products
where id not in ( 
   select min(p.id) from products p group by p.legacy_id, p.company
)