anchor.diff:      {ok, _Cols, Rows} = pgapp:equery(Q, Vs),
       lager:debug("[dqe_idx:pg:namespaces] Query took ~pms: ~s <- ~p",
                   [tdelta(T0), Q, Vs]),
  -    {ok, Rows}.
  +    {ok, strip_tpl(Rows)}.
   
   tags(Collection, Metric, Namespace) ->
       Q = "SELECT DISTINCT(name) FROM tags "
  
positive.code: 
  tdelta(T0) ->
      (erlang:system_time() - T0)/1000/1000.
  
negative.code:     {ok, _Cols, Rows} = pgapp:equery(Q, Vs),
      lager:debug("[dqe_idx:pg:tags] Query took ~pms: ~s <- ~p",
                  [tdelta(T0), Q, Vs]),
      {ok, strip_tpl(Rows)}.
  
  expand(Bucket, Globs) ->
      {ok, Q, Vs} = query_builder:glob_query(Bucket, Globs),
  