如何在pyspark中以秒为单位获取datediff()？

from pyspark.sql import SparkSession
from pyspark.sql.functions import datediff

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

# 创建一个包含两个日期的DataFrame
df = spark.createDataFrame([('2022-01-01 12:00:00', '2022-01-01 12:00:10')], ['start_date', 'end_date'])

# 计算日期差值并转换为秒数
df = df.withColumn('seconds_diff', datediff(df.end_date, df.start_date) * 24 * 60 * 60)

# 显示结果
df.show()

+-------------------+-------------------+------------+
|         start_date|           end_date|seconds_diff|
+-------------------+-------------------+------------+
|2022-01-01 12:00:00|2022-01-01 12:00:10|          10|
+-------------------+-------------------+------------+