text: create database if not exists droptable;
  create external table if not exists droptable.droptableif13_parquet (
    c_row int,
    c_groupby string,
    c_int int,
    c_bigint bigint,
    c_float4 float,
    c_float8 double
  )
  STORED AS PARQUET
  LOCATION '/drill/testdata/droptable/droptableif13';
  