使用PySpark在Spark DataFrame中将嵌套结构列重命名为all (全部小写

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

spark = SparkSession.builder.getOrCreate()

data = [
    ("John", {"age": 25, "city": "New York"}),
    ("Alice", {"age": 30, "city": "San Francisco"})
]
df = spark.createDataFrame(data, ["name", "details"])
df.show()

+-----+-------------------+
| name|           details |
+-----+-------------------+
| John|{age -> 25, city -> New York}|
|Alice|{age -> 30, city -> San Francisco}|
+-----+-------------------+

df = df.withColumnRenamed("details", "all")
df.show()

+-----+-------------------+
| name|                all|
+-----+-------------------+
| John|{age -> 25, city -> New York}|
|Alice|{age -> 30, city -> San Francisco}|
+-----+-------------------+