Expert T-SQL Window Functions in SQL Server by Kathi Kellenberger, Clayton Groom
Expert T-SQL Window Functions in SQL Server by Kathi Kellenberger, Clayton Groom PDF, ePub eBook D0wnl0ad
Expert T-SQL Window Functions in SQL Server takes you from any level of knowledge of windowing functions and turns you into an expert who can use these powerful functions to solve many T-SQL queries. Replace slow cursors and self-joins with queries that are easy to write and fantastically better performing, all through the magic of window functions.
First introduced in SQL Server 2005, window functions came into full blossom with SQL Server 2012. They truly are one of the most notable developments in SQL in a decade, and every developer and DBA can benefit from their expressive power in solving day-to-day business problems. Begin using windowing functions like ROW_NUMBER and LAG, and you will discover more ways to use them every day. You will approach SQL Server queries in a different way, thinking about sets of data instead of individual rows. Your queries will run faster, they will be easier to write, and they will be easier to deconstruct and maintain and enhance in the future.
Just knowing and using these functions is not enough. You also need to understand how to tune the queries. Expert T-SQL Window Functions in SQL Server explains clearly how to get the best performance. The book also covers the rare cases when older techniques are the best bet. Stop using cursors and self-joins to solve complicated queries. Become a T-SQL expert by mastering windowing functions.
- Teaches you how to use all the window functions introduced in 2005 and 2012.
- Provides real-world examples that you can experiment with in your own database.
- Explains how to get the best performance when using windowing functions.
What you’ll learn
- Create aggregations by defining sets of rows with the OVER clause.
- Calculate aggregates without losing the details.
- Rank and bucketize data for reporting purposes.
- Reduce and often eliminate self-joins.
- Reduce and often eliminate row-by-row cursor processing.
- Write simpler queries that perform with greater speed.
- Recognize situations when window functions make a difference.
Who this book is for
Expert T-SQL Window Functions in SQL Server is for the SQL Server database professionals who are ready to take on the biggest leap in query-writing expressiveness and performance to hit the SQL language in years. It’s for developers and database administrators who may have heard about windowing functions, but who haven’t had a chance to learn much about them. Expert T-SQL Window Functions in SQL Server is an excellent way for database professionals to get up to speed on these functions and put their benefits to work.
Table of Contents
1. Looking through the Window
2. Discovering Ranking Functions
3. Aggregating with Window Functions
4. Tuning for Better Performance
5. Calculating Rolling and Running Aggregates
6. Adding Frames to the Window
7. Peaking at Other Rows
8. Understanding Statistical Functions
9. The Future of Window Functions
From reader reviews:
Melinda Brown:
Book is usually written, printed, or descriptive for everything. You can learn everything you want by a book. Book has a different type. As we know that book is important thing to bring us around the world. Beside that you can your reading expertise was fluently. A e-book Expert T-SQL Window Functions in SQL Server will make you to become smarter. You can feel far more confidence if you can know about anything. But some of you think in which open or reading a book make you bored. It is far from make you fun. Why they could be thought like that? Have you seeking best book or ideal book with you?
Connie Nixon:
Information is provisions for those to get better life, information today can get by anyone in everywhere. The information can be a expertise or any news even an issue. What people must be consider whenever those information which is inside former life are hard to be find than now could be taking seriously which one is suitable to believe or which one typically the resource are convinced. If you receive the unstable resource then you buy it as your main information it will have huge disadvantage for you. All of those possibilities will not happen in you if you take Expert T-SQL Window Functions in SQL Server as the daily resource information.
Curtis Swasey:
Many people spending their time period by playing outside along with friends, fun activity together with family or just watching TV the entire day. You can have new activity to enjoy your whole day by reading a book. Ugh, ya think reading a book can really hard because you have to bring the book everywhere? It okay you can have the e-book, getting everywhere you want in your Smartphone. Like Expert T-SQL Window Functions in SQL Server which is keeping the e-book version. So , why not try out this book? Let's view.
Read Expert T-SQL Window Functions in SQL Server by Kathi Kellenberger, Clayton Groom for online ebook
Expert T-SQL Window Functions in SQL Server by Kathi Kellenberger, Clayton Groom Free PDF d0wnl0ad, audio books, books to read, good books to read, cheap books, good books, online books, books online, book reviews epub, read books online, books to read online, online library, greatbooks to read, PDF best books to read, top books to read Expert T-SQL Window Functions in SQL Server by Kathi Kellenberger, Clayton Groom books to read online.
No comments:
Post a Comment