在 SparkR DataFrame 中一次重命名多个列

Rename multiple columns at once in SparkR DataFrame

如何一次重命名 SparkR DataFrame 中的多个列,而不是多次调用 withColumnRenamed()?例如,假设我想将下面 DataFrame 中的列重命名为 namebirthdays,如果不调用 withColumnRenamed() 两次,我该怎么做?

team <- data.frame(name = c("Thomas", "Bill", "George", "Randall"),
  surname = c("Johnson", "Clark", "Williams", "Yosimite"),
  dates = c('2017-01-05', '2017-02-23', '2017-03-16', '2017-04-08'))
team <- createDataFrame(team)

team <- withColumnRenamed(team, 'surname', 'name')
team <- withColumnRenamed(team, 'dates', 'birthdays')

此处适用标准 R 方法 - 您只需重新分配 colnames:

colnames(team) <- c("name", "name", "birthdays")
team
SparkDataFrame[name:string, name:string, birthdays:string]

如果您知道顺序,您可以跳过完整列表并且

colnames(team)[colnames(team) %in% c("surname", "dates")] <- c("name", "birthdays")

尽管如此,您可能希望避免重名。