text: SET planner.width.max_per_node=100;
  SET planner.slice_target=1;
  SET planner.enable_multiphase_agg=false;
  SELECT
  stddev_pop(cast(DECIMAL_18_8 as decimal(18, 8))),
  stddev_pop(cast(DECIMAL_2_1 as decimal(2, 1))),
  stddev_pop(cast(DECIMAL_15_5 as decimal(15, 5)))
  FROM dfs.drillTestDir.`decimal/fragments/T_DECIMAL_BIG`;
  RESET planner.width.max_per_node;
  RESET planner.slice_target;
  RESET planner.enable_multiphase_agg;
  