Shell操作SparkSql创建DataFrame(Scala语言 )SparkSql创建DataSet(Scala语言)SparkSql DataSet和RDD互相转换 (Scala语言)SparkSql RDD转DataFrame (scala语言)SparkSql DataFrame转RDD (scala语言)SparkSql DataSet和DataFrame互相转换 (scala语言)SparkSql自定义函数(scala语言)