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SQL Pocket Guide 3e (Anglais) Broché – 7 décembre 2010


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Descriptions du produit

SQL Pocket Guide For programmers and database administrators who use SQL in their day-to-day work, this popular pocket guide is the ideal on-the-job reference. It uses numerous examples to address the language's complexity, and covers key aspects of SQL used in Oracle, DB2, SQL Server, MySQL, and PostgreSQL. Full description

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Commentaires client les plus utiles sur Amazon.com (beta)

Amazon.com: 4.4 étoiles sur 5 39 commentaires
13 internautes sur 13 ont trouvé ce commentaire utile 
1.0 étoiles sur 5 A Dud 8 juin 2015
Par pro_crustes - Publié sur Amazon.com
Format: Broché
I love most of the O'Reilly pocket guides I have, but not this one. It's badly organized, atrociously indexed, and seems to put a lot of emphasis on things that don't matter, at the expense of things that do. A pocket guide should be able to answer basic questions quickly. This one doesn't. The first chapter dives directly into CASE expressions. That's an odd place to start a book about SQL, but pocket guides aren't meant to be read from one end to the other, so maybe where it "starts" is irrelevant. But that's followed immediately with 25 pages on datatype conversion. Now, throughout all those pages, there is example after example of a pertinent SELECT query. But SELECT itself isn't treated on its own until page 106.

The heart of any pocket guide must be its index. That's where you're going to start when you need to know how "CREATE VIEW" works, what an index is, how to use the LIMIT qualifier, or the proper way to DECLARE a variable or cursor. Well, those things must not be important because they aren't in the index. (The only mention of indexes, by the way, is a bizarre entry reading, "indexes on columns, preventing use of," which isn't really even an accurate description of what appears on the matching page.)

By comparison, the Java Pocket Guide is exemplary. Most of the O'Reilly pocket guides are pretty good. Just not this one.
3 internautes sur 3 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Excellent Pocket-Sized Reference 6 décembre 2013
Par Mostly Mozart - Publié sur Amazon.com
Format: Broché Achat vérifié
For the past twenty years, I had been generating SQL queries using Access's query-by-example grid. Recently, I found myself needing to write the SQL directly, and this book lived up to its title. It's not an instruction manual. It's a short reference book, and an excellent one.
1 internautes sur 1 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Great Reference 23 février 2013
Par Christian Reader - Publié sur Amazon.com
Format: Format Kindle
I have been using this little book for years. Finally the binding came apart and I purchases the kindle version. This book is great for reference and for learning. It has a good balance of providing a basic explanation but also drilling down to the main points needed to write your SQL syntax.
4.0 étoiles sur 5 Good broad reference on common SQL implementations 7 juin 2011
Par Thomas A Harning Jr - Publié sur Amazon.com
Format: Broché
The complexity of developing database queries with SQL is a challenge often requiring frequent documentation searches. The "SQL Pocket Guide" by Jonathan Gennick is a great converged reference for many common database implementation.

The best feature of this guide is its breadth of detail offered. It provides a high-level view of database structures and provides useful details for taking strategies available in one implementation and possibly using it in another database engine. An example of this are the references from custom database function naming of Oracle's "analytic functions" and DB2's "OLAP functions" to the standard's name of "windowing functions". This allows you to take the naming you are familiar with, have been taught, or overheard and refer to it using that name and finding an appropriate redirection.

If you find that you are working with many different databases or want a quick reference to see if a given structure is available in a given database implementation, this guide is for you. Need a list of common data types for a category of data type: this guide has it. Need the details on dealing with times and dates: this guide has a good 20 pages on it. Even if it may not have all the tiny details you may need on a given topic, it can be a compass for finding your way through detailed documentation to what you want to find out.
2 internautes sur 3 ont trouvé ce commentaire utile 
3.0 étoiles sur 5 If you really need to carry it in a physical pocket 18 février 2011
Par John Brady - Publié sur Amazon.com
Format: Broché
SQL Pocket Guide The SQL Pocket Guide, 3rd Edition is a book that would be most useful to SQL users who need to work in multiple database environments and do not have an internet connection available when creating queries. It's well-organized by topic and provides working examples where relevant, but I don't see a place for this on my bookshelf.

My first search through the book (using the ebook version) was for the MySQL DAY() function, as I happened to be using that for a query. No relevant results were returned, although the DAYOFMONTH() function is present - so apparently synonyms are not necessarily included for all platforms. Google search provided a link to the relevant MySQL docs as the first result, and that would be my first recourse in almost every situation.

There are some value-adds in the text, for example the discussions around Oracle's CONNECT BY feature, but unless you really do need to carry this in your pocket, you will probably be better served by a more in-depth reference for your primary database platform(s) supplemented by Google.

I'll add that Johnathan Gennick's previous books have taught me quite a bit. This one just seems like a solution in need of a problem.

Disclaimer, I was provided with an electronic copy of this book by O'Reilly Publishing for purposes of review.
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