columns {
  name: "column0"
  type {
    pg_type {
      oid: 25
      typlen: -1
      typmod: -1
      type_name: "pgtext"
    }
  }
}
columns {
  name: "column1"
  type {
    optional_type {
      item {
        type_id: UTF8
      }
    }
  }
}
columns {
  name: "column2"
  type {
    optional_type {
      item {
        type_id: UTF8
      }
    }
  }
}
columns {
  name: "column3"
  type {
    pg_type {
      oid: 25
      typlen: -1
      typmod: -1
      type_name: "pgtext"
    }
  }
}
columns {
  name: "column4"
  type {
    pg_type {
      oid: 20
      typlen: 8
      typmod: -1
      type_name: "pgint8"
    }
  }
}
columns {
  name: "column5"
  type {
    optional_type {
      item {
        type_id: INT64
      }
    }
  }
}
columns {
  name: "column6"
  type {
    pg_type {
      oid: 20
      typlen: 8
      typmod: -1
      type_name: "pgint8"
    }
  }
}
rows {
  items {
    text_value: "023"
  }
  items {
    text_value: "aaa"
  }
  items {
    text_value: "foo"
  }
  items {
    null_flag_value: NULL_VALUE
  }
  items {
    text_value: "1"
  }
  items {
    int64_value: 2
  }
  items {
    null_flag_value: NULL_VALUE
  }
}
rows {
  items {
    text_value: "037"
  }
  items {
    text_value: "ddd"
  }
  items {
    text_value: "bar"
  }
  items {
    null_flag_value: NULL_VALUE
  }
  items {
    text_value: "3"
  }
  items {
    int64_value: 4
  }
  items {
    null_flag_value: NULL_VALUE
  }
}
