如何转换pyspark dataframe列的值？

from pyspark.sql import SparkSession
from pyspark.sql.functions import col, upper

# 创建SparkSession
spark = SparkSession.builder.getOrCreate()

# 创建示例DataFrame
data = [("Alice", 25), ("Bob", 30), ("Charlie", 35)]
df = spark.createDataFrame(data, ["Name", "Age"])

# 转换列的值为大写
df = df.withColumn("Name", upper(col("Name")))

# 显示转换后的结果
df.show()

+-------+---+
|   Name|Age|
+-------+---+
|  ALICE| 25|
|    BOB| 30|
|CHARLIE| 35|
+-------+---+