4 ms·

This is what the `in_batches` method already does. See [1], which is called by the `in_batches` method for update operations. [1] https://api.rubyonrails.org/c

• strken 3y ago
  You could use `in_batches` that way, but in the code from the article it looks like each call to `maximum`/`minimum` is causing a round trip, plus the `map` inside `MyService` is loading each batch into memory.