0
如何在Spark/Scala中將_1
,_2
重命名爲有意義的列名?Spark/Scala - 重命名列生成的列
root
|-- aaa: string (nullable = true)
|-- bbb: array (nullable = true)
| |-- element: struct (containsNull = true)
| | |-- _1: string (nullable = true)
| | |-- _2: long (nullable = false)