discourse/db/migrate/20170824172615_add_slug_index_on_topic.rb

# frozen_string_literal: true

class AddSlugIndexOnTopic < ActiveRecord::Migration[4.2]
  def up
    execute 'CREATE INDEX idxTopicSlug ON topics(slug) WHERE deleted_at IS NULL AND slug IS NOT NULL'
  end

  def down
    execute 'DROP INDEX idxTopicSlug'
  end
end
DEV: enable frozen string literal on all files This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging 2019-05-03 06:17:27 +08:00			`# frozen_string_literal: true`

Fix all the errors to get our tests green on Rails 5.1. 2017-08-31 12:06:56 +08:00			`class AddSlugIndexOnTopic < ActiveRecord::Migration[4.2]`
PERF: add an index on slug to make sure that slug lookups are quick 2017-08-25 01:33:25 +08:00			`def up`
			`execute 'CREATE INDEX idxTopicSlug ON topics(slug) WHERE deleted_at IS NULL AND slug IS NOT NULL'`
			`end`

			`def down`
			`execute 'DROP INDEX idxTopicSlug'`
			`end`
			`end`