asNondeterministic （UserDefined 函数）

将 UserDefinedFunction 更新为不确定。

Syntax

asNondeterministic()

退货

UserDefinedFunction

示例

import random
from pyspark.sql.functions import udf
from pyspark.sql.types import IntegerType

random_udf = udf(lambda: random.randint(0, 100), IntegerType()).asNondeterministic()
new_random_udf = spark.udf.register("random_udf", random_udf)
spark.sql("SELECT random_udf()").collect()
# [Row(random_udf()=82)]