目录Spark_SQL的UDF使用UDF简单使用Spark_SQL的UDF使用 用户自定义函编程客栈数，也叫UDF，可以让我们使用python/Java/Scala注册自定义函数，并在SQL中调用。这种方法很常用，通常用来给机构内的SQL用户们提供高级功
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