Book Image

SQL Server 2016 Developer's Guide

By : Miloš Radivojević, Dejan Sarka, William Durkin
Book Image

SQL Server 2016 Developer's Guide

By: Miloš Radivojević, Dejan Sarka, William Durkin

Overview of this book

Microsoft SQL Server 2016 is considered the biggest leap in the data platform history of the Microsoft, in the ongoing era of Big Data and data science. This book introduces you to the new features of SQL Server 2016 that will open a completely new set of possibilities for you as a developer. It prepares you for the more advanced topics by starting with a quick introduction to SQL Server 2016's new features and a recapitulation of the possibilities you may have already explored with previous versions of SQL Server. The next part introduces you to small delights in the Transact-SQL language and then switches to a completely new technology inside SQL Server - JSON support. We also take a look at the Stretch database, security enhancements, and temporal tables. The last chapters concentrate on implementing advanced topics, including Query Store, column store indexes, and In-Memory OLTP. You will finally be introduced to R and learn how to use the R language with Transact-SQL for data exploration and analysis. By the end of this book, you will have the required information to design efficient, high-performance database applications without any hassle.
Table of Contents (21 chapters)
SQL Server 2016 Developer's Guide
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
12
In-Memory OLTP Improvements in SQL Server 2016

Chapter 10. Columnstore Indexes

Analytical queries that scan huge amounts of data were always problematic in a relational database. Nonclustered balanced tree indexes are efficient for transactional queries seeks; however, they rarely help with analytical queries. A great idea occurred nearly 30 years ago: why do we need to store data physically in the same way we work with it logically—row by row? Why don't we store it column by column and transform columns back to rows when we interact with the data? Microsoft was playing with this idea for a long time and finally implemented it in SQL Server.

Columnar storage was first added to SQL Server in version 2012. It included nonclustered columnstore indexes (NCCI) only. Clustered columnstore indexes (CCI) were added in version 2014. In this chapter, the readers revise the columnar storage and then explore huge improvements for columnstore indexes in SQL Server 2016: updatable nonclustered columnstore indexes, columnstore indexes on in-memory tables...