1.Hive的parse_url函数 parse_url(url, partToExtract[, key]) - extracts a part from a URL 解析URL字符串,partToExtract的选项包含[HOST,PATH,QUERY,REF,PROTOCOL,FILE,AUTHORITY,USERINFO]. [host,path,query,ref,protocol,file,authority,userinfo] 举例 : select parse_url('ht
The Hadoop on Azure Sqoop Import Sample Tutorial Table of Contents Overview Goals Key technologies Setup and Configuration Tutorial How to set up a SQL database How to use Sqoop from Hadoop on Azure to import SQL Database query results to the
My name is Farooq and I am with HDinsight support team here at Microsoft. In this blog I will try to give some brief overview of Sqoop in HDinsight and then use an example of importing data from a Windows Azure SQL Database table to HDInsight cluster
LanguageManual WindowingAndAnalytics Skip to end of metadata Added by Lefty Leverenz, last edited by Lefty Leverenz on Aug 01, 2014 (view change) show comment Go to start of metadata Windowing and Analytics Functions Windowing and Analytics
sss /** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * t
jdbc连接时报如下错误: Error connecting to database [k] : org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connect to the database Error connecting to database: (using class org.apache.hive.jdbc.HiveDriver) Failed to open
转自:http://lxw1234.com/archives/2015/04/176.htm,Hive分析窗口函数(一) SUM,AVG,MIN,MAX 之前看到大数据田地有关于max()over(partition by)的用法,今天恰好工作中用到了它,但是使用中遇到了一个问题:在max(rsrp)over(partition by buildingid,height) as max_rsrp返回的结果不是分组中的最大值.最中找到了问题的原因:max_rsrp数据类型为string而不是dou
http://yugouai.iteye.com/blog/1908121 分析函数用于计算基于组的某种聚合值,它和聚合函数的不同之处是:对于每个组返回多行,而聚合函数对于每个组只返回一行.开窗函数指定了分析函数工作的数据窗口大小,这个数据窗口大小可能会随着行的变化而变化 drop table if exists student; create table student( name string, class tinyint, cooperat