Book Image

SQL Server 2017 Developer???s Guide

Book Image

SQL Server 2017 Developer???s Guide

Overview of this book

Microsoft SQL Server 2017 is a milestone in Microsoft's data platform timeline, as it brings in the power of R and Python for machine learning and containerization-based deployment on Windows and Linux. This book prepares you for advanced topics by starting with a quick introduction to SQL Server 2017's new features. Then, it introduces you to enhancements in the Transact-SQL language and new database engine capabilities before switching to a different technology: JSON support. You will take a look at the security enhancements and temporal tables. Furthermore, the book focuses on implementing advanced topics, including Query Store, columnstore indexes, and In-Memory OLTP. Toward the end of the book, you'll be introduced to R and how to use the R language with Transact-SQL for data exploration and analysis. You'll also learn to integrate Python code into SQL Server and graph database implementations as well as the deployment options on Linux and SQL Server in containers for development and testing. By the end of this book, you will be armed to design efficient, high-performance database applications without any hassle.
Table of Contents (25 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Free Chapter
1
Introduction to SQL Server 2017
Index

Chapter 12. In-Memory OLTP Improvements in SQL Server 2017

When In-Memory OLTP was introduced in SQL Server 2014, many developers were initially excited. The hope of a new, ultra-high-performance data processing engine, coupled with a leading relational database engine, offered the potential of significant improvement for many SQL Server developers. However, this excitement quickly turned into mild disappointment due to the number of restrictions assigned to In-Memory OLTP. Many of these restrictions prevented a widespread adoption of the technology and forced it into a niche set of very tight implementation scenarios. Some of these restrictions, such as minimal support for large data object types (LOBs) and missing support for ALTER commands, dampened many people's enthusiasm for the technology.

As with previous features inside SQL Server, In-Memory OLTP has followed a similar pattern. SQL Server 2014 saw the introduction of the In-Memory OLTP Engine. With SQL Server 2016 and again in 2017...