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用spark获取前一行数据,DF.withColumn(colName,lag(colName,offset).over(Window.partitionBy().orderBy(desc())))_spark df取某一行-CSDN博客

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文章浏览阅读1.7k次。数据:1,11,1112,22,2223,33,3331,22,3331,22,444代码:package com.emg.etp.analysis.preproces.nullphotoimport com.emg.etp.analysis.preproces.nullphoto.pojo.EcarDataimport org.apache.spark.{SparkConf, SparkContext}import org.apache.spark.sql.SparkSes_spark df取某一行