Adding an index on a boolean field

Question

I have a Rails model with a boolean field that I search on (I use a scope that finds all instances where the field is set to true). I\'m using Postgres.

My instinct

Answer 1

To create the partial index in a Rails migration, you would do this. In this example, the model is Product and the column is featured.

class AddFeaturedOnProducts < ActiveRecord::Migration
  def change
    add_index(:products, :featured, where: "featured")
  end
end