코드로 보자import org.apache.spark.sql.functions._import org.apache.spark.sql.types._// 예시 DataFrame 생성val data = Seq( (1, Array(Row("1", "A"), Row("2", "B"), Row("3", "C"))), (2, Array(Row("4", "D"), Row("5", "E"), Row("6", "F"))))val schema = StructType(Seq( StructField("id", IntegerType, true), StructField("items", ArrayType(StructType(Seq( StructField("number", StringType, true), Struct..