message: Fixed branching condition with dimension spec
diff: @@ -1018,7 +1018,7 @@ class DruidDatasource(Model, BaseDatasource):
  del qry['dimensions']
  qry['metric'] = list(qry['aggregations'].keys())[0]
  client.topn(**qry)
  - elif len(groupby) > 1 or having_filters or not order_desc:
  + else:
  # If grouping on multiple fields or using a having filter
  # we have to force a groupby query
  if timeseries_limit and is_timeseries:
  