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Title: Confusing and Incomplete.
Review: This book was hard to follow in places and the code included with the book didn't seem to work half the time. Trying the simple examples given on page 506 (Listing 24.4) I spend good part of an 8 hour work day trying all kinds of things to make that simple script to work, but to no avail. I eliminated the if statement, the only code in the example, and it worked. This experience and the haphazard presentation and confusing explanations of the examples that followed I gave up on using the code in this book and found alternative examples elsewhere.On a positive note this book has a good introduction to SQL functions.
