当数据库的性能没有达到预期要求时，你能怎么做呢？当你想通过昂贵的硬件升级来解决问题之前，请先看这本书，SQL重构提供了一系列代码修改来大大提升您的数据库应用程序效率。
What can you do when database performance doesn't meet expectations? Before you turn to expensive hardware upgrades to solve the problem, reach for this book. Refactoring SQL Applications provides a set of tested options for making code modifications to dramatically improve the way your database applications function. Backed by real-world examples, you'll find quick fixes for simple problems, in-depth answers for more complex situations, and complete solutions for applications with extensive problems.
Learn to:
Determine if and where you can expect performance gains
Apply quick fixes, such as limiting calls to the database in stored functions and procedures
Refactor tasks, such as replacing application code by a stored procedure, or replacing iterative, procedural statements with sweeping SQL statements
Refactor flow by increasing parallelism and switching business-inducted processing from synchronous to asynchronous
Refactor design using schema extensions, regular views, materialized views, partitioning, and more
Compare before and after versions of a program to ensure you get the same results once you make modifications
Refactoring SQL Applications teaches you to recognize and assess code that needs refactoring, and to understand the crucial link between refactoring and performance. If and when your application bogs down, this book will help you get it back up to speed.