add `origin` to status table to mark posts that were previously imported

db/migrate/20190521003341_add_origin_to_statuses.rb

@@ -0,0 +1,7 @@
+class AddOriginToStatuses < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+  def change
+    add_column :statuses, :origin, :string
+    add_index :statuses, :origin, unique: true, algorithm: :concurrently
+  end
+end