message: Make orderby native sqla construct
diff: @@ -794,6 +794,8 @@ class SqlaTable(Model, BaseDatasource):
  direction = asc if ascending else desc
  if utils.is_adhoc_metric(col):
  col = self.adhoc_metric_to_sqla(col, cols)
  + elif col in cols:
  + col = cols[col].get_sqla_col()
  qry = qry.order_by(direction(col))
  if row_limit:
  