Columns not quoted when using a `from` clause

rails_bug_test.rb

# frozen_string_literal: true


gemfile(true) do
  source 'https://rubygems.org'

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem 'activerecord', github: 'rails/rails', ref: 'c03a39998156f4496127540cc4bc276e67fd5901'
  gem 'sqlite3'
end

require 'active_record'
require 'minitest/autorun'
require 'logger'

ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :posts, force: true do |t|
    t.integer :name
    t.string  :where
    t.timestamps
  end
end

class Post < ActiveRecord::Base
  self.ignored_columns = %w(name)

  scope :using_index, -> { from('`posts`') } # from in this case is useless but is useful when trying to use a specific index
end

class BugTest < Minitest::Test
  def test_association_stuff
    Post.create!

    Post.using_index.first # Will fail SELECT id, where, created_at, updated_at FROM `posts`
    # "where" isn't quoted, issue would be the same with any columns having a name that is as database specific keyword
    # the most common on would be the `key`
  end
end