fixes #2065

db/migrate/20131217025233_add_updated_at_and_id_index_to_post_versions.rb

@@ -0,0 +1,13 @@
+class AddUpdatedAtAndIdIndexToPostVersions < ActiveRecord::Migration
+  def self.up
+    execute "set statement_timeout = 0"
+    remove_index :post_versions, :updated_at
+    add_index :post_versions, [:updated_at, :id]
+  end
+
+  def self.down
+    execute "set statement_timeout = 0"
+    remove_index :post_versions, [:updated_at, :id]
+    add_index :post_versions, :updated_at
+  end
+end