Let’s see two tables Employee and EmployeeDepartment that are going to be joined. Inner joins Select  *  from employee join employeedepartment  ON (employee.empid=employeedepartment.empId) Output : <<InnerJoin.png>> Left outer joins Select e.empId, empName, department from employee e Left outer join employeedepartment ed on(e.empId=ed.empId); Output :…

Hive sort by and order by commands are used to fetch data in sorted order. The main differences between sort by and order by commands…

To understand the Hive DML commands, let’s see the employee and employee_department table first. LOAD DATA hive> LOAD DATA LOCAL INPATH ‘./usr/Desktop/kv1.txt’ OVERWRITE INTO TABLE Employee; SELECTS and FILTERS hive> SELECT  E.EMP_ID FROM Employee E  WHERE E.Address=‘US’; GROUP BY hive> hive> SELECT  E.EMP_ID FROM Employee E GROUP BY E.Addresss;

Create Database Statement A database in Hive is a namespace or a collection of tables. hive> CREATE SCHEMA userdb; hive> SHOW DATABASES; Drop database hive> DROP DATABASE IF EXISTS userdb; Creating Hive Tables Create a…

Hive supports Data definition Language(DDL), Data Manipulation Language(DML) and User defined functions. Hive DDL Commands create database drop database create table drop table alter table…

Hive data types are categorized in numeric types, string types, misc types and complex types. A list of Hive data types are given below. Numeric…

Step 1: The JAVA and Hadoop must be preinstalled on your system. Step 2: For Hive Download Hive from http://apache.petsads.us/hive/hive-0.14.0/. It gets downloaded in /user/download…

Hive is a data ware house system for Hadoop. It runs SQL like queries called HQL (Hive query language) which gets internally converted to map…

Hive tutorial provides basic and advanced concepts of Hive. Our Hive tutorial is designed for beginners and professionals. Apache Hive is a data ware house…