Rails 7.1 adds support for multi-column ordering in ActiveRecord::Batches - BigBinary Blog

In Rails versions prior to 7.1, when batch processing records with a composite primary key, like id_1 and id_2, developers could use the :asc or :desc argument to control the sorting order. However, there was a limitation in how this sorting worked. When you specified the sorting order using :asc or :desc, it affected both id_1 and id_2 simultaneously. In other words, if you requested ascending order, both id_1 and id_2 would be sorted in ascending order together. Similarly, if you requested descending order, both id_1 and id_2 would be sorted in descending order together.This limitation had practical implications, especially when you needed to sort records by different criteria for each part of the composite primary key.