如何在scala中删除数据帧中字符串列中的数字

import org.apache.spark.sql.functions._
import org.apache.spark.sql.DataFrame

def removeDigits(df: DataFrame, columnName: String): DataFrame = {
  val regex = "\\d+".r
  val removeDigitsUDF = udf((str: String) => regex.replaceAllIn(str, ""))
  df.withColumn(columnName, removeDigitsUDF(col(columnName)))
}

val df = // 你的数据帧

val columnName = // 你要删除数字的列名

val result = removeDigits(df, columnName)