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Getting Started with SQL Server 2014 Administration

You're reading from Getting Started with SQL Server 2014 Administration

Product type Book

Published in Apr 2014

Publisher Packt

ISBN-13 9781782172413

Pages 106 pages

Edition 1st Edition

Languages

Concepts

Database Administration

Author (1):

Gethyn Ellis

Table of Contents (13) Chapters

Getting Started with SQL Server 2014 Administration

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

1. SQL Server 2014 and Cloud

2. Backup and Restore Improvements

3. In-Memory Optimized Tables

4. Delayed Durability

5. AlwaysOn Availability Groups

6. Performance Improvements

Index

Statistics

One of the problems while updating statistics on large tables in SQL Server is that the entire table has to be scanned, for example, while using the WITH FULLSCAN option to scan the entire table, even if only recent data has changed. This is also true when using partitioning. Even if only the newest partition has changed since the last time, the statistics are updated. Updating the statistics again requires a scan of the entire table, not just the current partition. This scan option includes all the partitions that didn't change. You can now update statistics incrementally with the introduction of SQL Server 2014, which can provide help with this problem.

The CREATE STATISTICS option and related statistic statements now allow for individual partition statistics to be created and updated using the INCREMENTAL option. Other related statements that allow or report incremental statistics include: UPDATE STATISTICS, sp_createstats, CREATE INDEX, ALTER INDEX, ALTER DATABASE SET, DATABASEPROPERTYEX...

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Authors (1)

Gethyn Ellis

Gethyn Ellis has over eighteen years of experience with SQL Server and for past ten years he has been working on Azure. He is an Microsoft certified trainer. He also trains and is a consultant for SQL Server. Prior to this he has worked with Packt and written books on "Getting Started SQL Server 2014 Administration" , "Microsoft Azure laaS Essentials", and Professional Azure SQL Database Administration.

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