Slashdot

It's pretty easy to sum up what SQL in a Nutshell contains. It covers the entire ANSI SQL2003 standard as well as how that standard is implemented in MySQL 5.1, Oracle Database 11g, PostgreSQL 8.2.1 and Microsoft SQL Server 2008. There is a new ANSI standard more recent than the 2003 standard, ANSI SQL2006. This new standard does not change anything covered in the book, but introduced XML and XQuery which are not covered here. The format for conveying all this information mirrors that of the other "...in a Nutshell" books. There are four sections. The first is a very short (15 pages) history of SQL and the second is a summary of foundational concepts. The vast majority of the book is the third section, "SQL Statement Commands." These commands are given in alphabetical order. There is also a table at the very beginning of the chapter listing every command and showing how it is supported by the four platforms.

Each command is presented by starting with a short summary of what it does. This is followed by a table showing which RDBMS products support the command, the proper syntax for the command, key words, command rules, possible issues that may come up and implementation details and examples for each of the four RDBMS products represented. A couple of the differences between the second and third edition are that two RDBMS products were dropped and there are more examples. The products dropped allowed for there to be more examples while also making the book smaller than earlier editions. Anyone working with Sybase Adaptive Server or DB2 UDB will want to hold onto their second edition copy of this book if they want to have that platform specific content available, because it is not in this third edition.

The book states that the dropped platforms were the least popular of those in earlier editions. For those wondering why their favorite RDBMS is not in the list, that gives the answer. To keep length down the number of specific platforms covered was kept to four. Fortunately the books is still of high value for most readers as most decent RDBMS products will support ANSI SQL standards. On those occasions they do not, the reader would have to look to another resource for help. The length issue is easy to understand when looking at the GRANT statement and seeing that it covers over twenty pages. Most of this space is used to explain the various options available on each platform.

The last section SQL Functions documents all of the standard functions with examples and then contains a list of platform specific extensions, grouped by product. There is not a table showing platform support like there was for SQL statements. This section is much smaller, so it really isn't an issue. The single appendix that follows list standard and platform specific key words.

So who would benefit from SQL in a Nutshell? The most obvious to me is the DBA or developer working across more than one of the four platforms presented, especially if they don't move from one to the other too often. Like an Oracle DBA that needs to go do something in MS SQL Server every so often, or the same type of thing between any of the others. This makes for a quick resource that will sort out forgetting how one or the other does things rather quickly. But even if one isn't moving across multiple platforms, unless the whole standard has been memorized, this is a great help.

The second group I see gaining some real good from this book are those new to working with SQL. I've worked with all four platforms and others not covered in this book and on every single one of them I've hit error messages that were anything but helpful. Being able to go directly to a correct statement of syntax and usage is a real help when the system doesn't want to tell what is really going on. It is important to remember that this is a pure reference book. It is not written with the intent of teaching how to use SQL. That said, it covers the entire standard. Much like a dictionary can be used to increase one's knowledge of a language, reading through this reference can be a good way to learn more about SQL. Many introductory texts aren't going to cover the whole standard or as many platform specific details. The student of SQL would get a real jump by working through this book. It is compact enough that while it wouldn't be a thrilling read, it is completely doable.

Who wont like it? Probably anyone who doesn't like any of the other nutshell books from O'Reilly. This book is pretty much exactly like my Unix in a Nutshell, Linux in a Nutshell and MySQL in a Nutshell books. If the format and approach bothers you, don't look for any radical departure that will make it more palatable here. If you are like me and already know you like the format, then this is pretty much a sure thing. For the vast majority of us that work in the database world, this is the reference. I say this keeping in mind the scope of the book. Is this everything one needs to know about SQL? Obviously not. There is much more to be said about SQL as evidenced by all the words that have been said and are out there in print. But when one wants to know quickly about SQL statements and functions, I can't think of a better resource.

Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.