Book Image

Apache Hive Essentials - Second Edition

Book Image

Apache Hive Essentials - Second Edition

Overview of this book

In this book, we prepare you for your journey into big data by frstly introducing you to backgrounds in the big data domain, alongwith the process of setting up and getting familiar with your Hive working environment. Next, the book guides you through discovering and transforming the values of big data with the help of examples. It also hones your skills in using the Hive language in an effcient manner. Toward the end, the book focuses on advanced topics, such as performance, security, and extensions in Hive, which will guide you on exciting adventures on this worthwhile big data journey. By the end of the book, you will be familiar with Hive and able to work effeciently to find solutions to big data problems
Table of Contents (12 chapters)

Summary

In this chapter, we covered how to exchange data between tables and files using the LOAD, INSERT, IMPORT, and EXPORT keywords. Then, we introduced the different data ordering and sorting options. We also covered some commonly used tips on using functions. Finally, we provided an overview of row-level transactions, DELETE, UPDATE, MERGE, and locks. After going through this chapter, we should be able to import or export data with HQL. We should be experienced in using different types of data sorting keywords, functions, and transaction statements.

In the next chapter, we'll look at the different ways of carrying out data aggregations and sampling in HQL.