Ruby-on-Rails: Selecting distinct values from the model

Question

The docs: http://guides.rubyonrails.org/active_record_querying.html#selecting-specific-fields

Clearly state that:

query = Client.select(:name).distin         


        

Answer 1

There are some approaches:

1. Rails way:

   Model.select(:name).distinct
   

2. Semi-rails way

   Model.select("DISTINCT ON(models.name) models.*")
   

   The second allows you to select the first record uniqued by name, but in the whole matter, not only names.