Usage of subqueries in Apache Hive queries   In this article we will learn how and where to use subqueries in Apache Hive. Sub-queries in Hive queries are allowed in from clause ad where clause. The following steps explain you in detail about subqueries in Hive. 1) Create a department table as explained in this article. 2) In From clause. The following query uses subquery in from clause.select namenewsalary from (select namesalary1.1 as newsalary from employee) emp_new;  Subquery columns can…

Usage of subqueries in Apache Hive queries In this article we will learn how and where to use subqueries in Apache Hive. Sub-queries in Hive queries are allowed in from clause ad where clause. The following steps explain you in detail about subqueries in Hive. 1) Create a department table as explained in this article. 2) In From clause. The following query uses subquery in from clause.select namenewsalary from (select namesalary1.1 as newsalary from employee) emp_new; Subquery columns can…

Starting and stopping Ambari-server   In this article we will learn how to work with Ambari server.We will learn how to start stop  restart and some more operations of ambari server from command line. If you are not using root user you have to prefix sudo to all commands listed in below steps.1) Check the status of Ambari server. You can use any one of the commands to check status of ambari server. ambari-server status OR sudoambari-server status ORservice ambari-server status This command…

Starting and stopping Ambari-server In this article we will learn how to work with Ambari server.We will learn how to start stop restart and some more operations of ambari server from command line. If you are not using root user you have to prefix sudo to all commands listed in below steps.1) Check the status of Ambari server. You can use any one of the commands to check status of ambari server. ambari-server status OR sudoambari-server status ORservice ambari-server status This command…

La plateforme dédiée aux Big Data et la solution clé pour Apache Hadoop en entreprise - Cloud

Cloudera Certified Developer for Apache Hadoop (CCDH) Exam Exam Code- Release / Update Date-Dec 2014 Question and Answer: 60 Edition: Free Test Engine Included

Step by step guide for execution engines usage in Apache Hive.   In this article We will learn how to use different execution engines in Apache Hive. 1) Create a table called employee to run next queries. You can check how to create a table in Hive here. 2) Check available execution engine in hive-site.xml. grep -C2 -i execution.engine /etc/hive/conf/hive-site.xml Execution engine defined in hive-site.xml is the default execution engine.The image below shows tez is the execution engine…

Step by step guide for execution engines usage in Apache Hive. In this article We will learn how to use different execution engines in Apache Hive. 1) Create a table called employee to run next queries. You can check how to create a table in Hive here. 2) Check available execution engine in hive-site.xml. grep -C2 -i execution.engine /etc/hive/conf/hive-site.xml Execution engine defined in hive-site.xml is the default execution engine.The image below shows tez is the execution engine…

Working with databases in Apache Hive    In this article We will learn how to work on databases in Apache Hive. We will learn how to create drop change and use database in Apache Hive.1) Check existing databases. We check existing databases in Hive using show databases command. Apache Hive comes with a database called default. Command : show databases;  2) Creating a new database; We can create a new database in Apache Hive using create command. Command syntax: create database [if not exist]…

Working with databases in Apache Hive In this article We will learn how to work on databases in Apache Hive. We will learn how to create drop change and use database in Apache Hive.1) Check existing databases. We check existing databases in Hive using show databases command. Apache Hive comes with a database called default. Command : show databases; 2) Creating a new database; We can create a new database in Apache Hive using create command. Command syntax: create database [if not exist]…

Cloudera Certified Administrator for Apache Hadoop  Exam Code- CCA-332  Release / Update Date-Dec 15, 2014  Question and Answer: 30 Edition: 2.0 Free Test Engine Included

Cloudera Certified Administrator for Apache Hadoop Exam Code- Release / Update Date-Dec 2014 Question and Answer: 30 Edition: Free Test Engine Included

How to create a new Hive table using select query output   In this article we will learn how to create a new table in Hive using other query output. We use create table as select statement to create a new table from select query output data. Syntax is : create table [table-name] as [select-query] Practise below steps to unnderstand this feature better. 1) Create a hive table called employee using this article. 2) Run a select query to get deptno wise employee count on employee table.select…

How to create a new Hive table using select query output In this article we will learn how to create a new table in Hive using other query output. We use create table as select statement to create a new table from select query output data. Syntax is : create table [table-name] as [select-query] Practise below steps to unnderstand this feature better. 1) Create a hive table called employee using this article. 2) Run a select query to get deptno wise employee count on employee table.select…

Enjoy the reading and learning. Add your own suggestions in the comment section.   The Hadoop Ecosystem by Datameer Tutorials  Free videos - MapR Academia Udacity course Hortonworks Sandbox Hadoop Ecosystem Running Hadoop Map-Reduce Hadoop Screencasts Reza Shiftehfar's blog I Reza Shiftehfar's blog II Reza Shiftehfar's blog III Reza Shiftehfar's blog IV Reza Shiftehfar's blog V Reza Shiftehfar's blog VI Reza Shiftehfar's blog VII Deploying Storm on Hadoop for Adver...

Enjoy the reading and learning. Add your own suggestions in the comment section. The Hadoop Ecosystem by Datameer Tutorials Free videos - MapR Academia Udacity course Hortonworks Sandbox Hadoop Ecosystem Running Hadoop Map-Reduce Hadoop Screencasts Reza Shiftehfar's blog I Reza Shiftehfar's blog II Reza Shiftehfar's blog III Reza Shiftehfar's blog IV Reza Shiftehfar's blog V Reza Shiftehfar's blog VI Reza Shiftehfar's blog VII Deploying Storm on Hadoop for Adver...

Syncsort Simplify Integration of Streaming Data in Apache Spark, Kafka and Hadoop - https://www.predictiveanalyticstoday.com/syncsort-simplify-integration-streaming-data-apache-spark-kafka-hadoop/

Syncsort Simplify Integration of Streaming Data in Apache Spark, Kafka and Hadoop - https://www.predictiveanalyticstoday.com/syncsort-simplify-integration-streaming-data-apache-spark-kafka-hadoop/

Types of Joins and Counters in Apache MapReduce #ApacheMapReduce #TypesofJoins #Counters #HadoopTutorials #BestHadoopTraininginchennai #PlacementAssistance Read Article - http://www.besthadooptraining.in/blog/type-join-counter-hadoop-mapreduce/

Types of Joins and Counters in Apache MapReduce #ApacheMapReduce #TypesofJoins #Counters #HadoopTutorials #BestHadoopTraininginchennai #PlacementAssistance Read Article - http://www.besthadooptraining.in/blog/type-join-counter-hadoop-mapreduce/

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