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SQL Server 2016 Developer's Guide

You're reading from  SQL Server 2016 Developer's Guide

Product type Book
Published in Mar 2017
Publisher Packt
ISBN-13 9781786465344
Pages 616 pages
Edition 1st Edition
Languages
Authors (3):
Miloš Radivojević Miloš Radivojević
Profile icon Miloš Radivojević
Dejan Sarka Dejan Sarka
Profile icon Dejan Sarka
William Durkin William Durkin
Profile icon William Durkin
View More author details
Toc

Table of Contents (21) Chapters close

SQL Server 2016 Developer's Guide
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Introduction to SQL Server 2016 2. Review of SQL Server Features for Developers 3. SQL Server Tools 4. Transact-SQL Enhancements 5. JSON Support in SQL Server 6. Stretch Database 7. Temporal Tables 8. Tightening the Security 9. Query Store 10. Columnstore Indexes 11. Introducing SQL Server In-Memory OLTP 12. In-Memory OLTP Improvements in SQL Server 2016 13. Supporting R in SQL Server 14. Data Exploration and Predictive Modeling with R in SQL Server

System-versioned tables in SQL Server 2016


SQL Server 2016 introduces support for system-versioned temporal tables. Unfortunately, application-time tables are not implemented in this version. System-versioned temporal tables bring built-in support for providing information about data stored in the table at any point in time rather than only the data that is correct at the current moment in time. They are implemented according to the specification in the ANSI SQL 2011 standard with a few extensions.

How temporal tables work in SQL Server 2016

A system-versioned temporal table is implemented in SQL Server 2016 as a pair of tables: the current table containing the actual data, and the history table where only historical entries are stored. There are many limitations of both current and history tables. Here are limitations and considerations that you must take into account for the current table of a system-versioned temporal table:

  • It must have a primary key defined

  • It must have one PERIOD FOR SYSTEM_TIME...

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