Introduction to the Fifth Edition
This is not an introductory book. This book, like the editions before it, is for the working SQL programmer who wants to pick up some advanced SQL techniques and programming idioms. I put programming tips for newbies into their own book (SQL Programming Style, Morgan-Kaufmann, 2005, ISBN: 978-0120887972) because this book is an advanced programmer's book and I assume that the reader is now writing real SQL, not some dialect or his native programming language in a thin disguise. I also assume that he or she can translate Standard SQL into their local dialect without much effort.
I have tried to provide comments with the solutions, to explain why they work. I hope this will help the reader see underlying principles ...
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