columns {
  name: "p_brand"
  type {
    type_id: STRING
  }
}
columns {
  name: "p_type"
  type {
    type_id: STRING
  }
}
columns {
  name: "p_size"
  type {
    type_id: INT64
  }
}
columns {
  name: "supplier_cnt"
  type {
    type_id: UINT64
  }
}
