scala> val df = Seq(1.to(5).mkString(",")).toDF("number")
df: org.apache.spark.sql.DataFrame = [number: string]
scala> df.show(false)
+---------+
|number |
+---------+
|1,2,3,4,5|
+---------+
TBD
原文：https://www.cnblogs.com/ji-hf/p/13687945.html