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

Limitations of using Stretch Database


As you saw in the previous section, there are many limitations when you work with Stretch Database. You can distinguish between limitations that the prevent usage of Stretch Database and limitations in database tables that are enabled for stretching.

Limitations that prevent you from enabling the Stretch DB features for a table

In this section, you will see the limitations that prevent you from using Stretch DB. They can be divided into table, column, and index limitations.

Table limitations

You cannot enable the Stretch DB feature for any SQL Server table. A table should have stretch-friendly properties. The following list shows the table properties that prevent the use of the Stretch DB feature:

  • It is a memory-optimized table
  • It is a file table
  • It contains FILESTREAM data
  • It uses Change Data Capture or Change Tracking features
  • It has more than 1,023 columns or more than 998 indexes
  • Tables referenced with a foreign key
  • It is referenced by indexed views
  • It contains...