Comment Re:Server performance is important, but... (Score 1) 159
The review of this book doesn't make it obvious to me. Is this book really about refactoring or is it about query tuning?
IMHO, the former doesn't really need to be db vendor specific. Refactoring should encompass all code and not just the SQL. Looking for ways to refactor from an ORM perspective makes sense such as lazy evaluation and strategic caching.
Query tuning is an important topic with which there are already plenty of resources devoted to it.