目录 1、explode()函数2、posexplode()函数3、lateral view函数 1、explode()函数 英文释义: explode() takes in an array (or a map) as an input and outputs the elements of the array (map) as separate rows. UDTFs can be used in the SELECT expression list...
文章目录 1、问题描述:2、分析与解决办法:3、DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel().4、总结 1、问题描述: 背景:机器...
tdf4.select("id").rdd.map(x=>Array(x(0),cmls)).toDF("id","cmls").show() 试图构造上述dataframe,其中cmls是个array[any] 此时报错: value toDF is not a member of org.apache.spark.rdd.RDD[Array[Any]] 尝试了网上的?import sq...
文章目录 1、问题描述:2、分析与解决办法:3、DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel().4、总结 1、问题描述: 背景:机器...
文章目录 1、问题描述:2、分析与解决办法:3、DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples, ), for example using ravel().4、总结 1、问题描述: 背景:机器...
一、UDF说明 array_struct_sort(array(struct1,struct2,...), string sortField):Returns the passed array struct, ordered by the given field.
对所给的Array<Struct>按sortField字段进行排序并返回。 二、代码 package com.scb.dss.udf; import org.apache...