discourse/db/migrate/20160215075528_add_unread_pm_index_to_notifications.rb

class AddUnreadPmIndexToNotifications < ActiveRecord::Migration[4.2]
  def change
    # create index idxtmp on notifications(user_id, id) where notification_type = 6 AND NOT read
    add_index :notifications, [:user_id, :id], unique: true, where: 'notification_type = 6 AND NOT read'
  end
end
Fix all the errors to get our tests green on Rails 5.1. 2017-08-31 12:06:56 +08:00			`class AddUnreadPmIndexToNotifications < ActiveRecord::Migration[4.2]`
FIX: Always ensure notifications are treated as read once clicked UX: improve messaging so notifications list is far more stable PERF: improve performance of notifcation lookup queries - Add feature "SetTransientHeader" that allows shipping info to server in the next Ajax request - remove local storage hack used for notifications - amend lookupStale to return hydrated objects, move logic into store - stop magically clearing various notifications (likes, invitee accepted, group_summary, granted badge) 2016-02-15 19:29:35 +11:00			`def change`
			`# create index idxtmp on notifications(user_id, id) where notification_type = 6 AND NOT read`
			`add_index :notifications, [:user_id, :id], unique: true, where: 'notification_type = 6 AND NOT read'`
			`end`
			`end`