SQL Server 2008 Query Performance Tuning Distilled

SQL Server 2008 Query Performance Tuning Distilled presents a direct trouble–shooting methodology for identifying poorly performing stored procedures and queries, isolating the causes of that poor performance, and fixing the underlying problems. Each chapter is dedicated to one of the top causes of poorly performing queries and shows methods for identifying and dealing with the problems in that chapter’s domain. Emphasis is always put upon or placed upon practical methods that you can put to immediate use in your day–to–day work. SQL Server 2008 functionality, tips, and tricks are emphasized in each subject area.

• Emphasizes the practical. Does not bury readers in theory.
• Gives readers practical techniques to immediately apply in their daily work.
• Dedicates a chapter to each of the most common, performance–related problem areas.

What you’ll learn

• Identify and fix poorly performing queries that are hurting your business.
• Read query execution plans and identify bottlenecks in performance.
• Record system performance metrics for trend analysis.
• Learn to design databases and write Transact–SQL code to avoid common problems.
• Understand what an index is, what it does, and how to build one.
• Use industry accepted best practices and understand how to develop your own to arrive at optimal database performance.

Who is this book for

SQL Server Query Performance Tuning Distilled is aimed at anyone writing business–critical Transact–SQL queries, and also at those responsible for the continued good performance of those queries. Developers, database administrators, business intelligence analysts, and any others who develop Transact–SQL queries will find this book an indispensible resource for getting the most out of what SQL Server 2008 has to offer.

《SQL Server 2008 查詢效能調校精要》提供了一種直接的故障排除方法，用於識別執行效能不佳的儲存程序和查詢，分離出導致效能不佳的原因，並修復底層問題。每個章節都專注於一個導致查詢效能不佳的主要原因，並展示了在該章節領域中識別和處理問題的方法。強調的始終是實用方法，您可以立即應用於日常工作中。每個主題區域都強調了 SQL Server 2008 的功能、技巧和訣竅。

本書的特點包括：
- 強調實用性，不深入理論。
- 為讀者提供可立即應用於日常工作的實用技巧。
- 每個常見的與效能相關的問題領域都有一個專門的章節。

本書將教您：
- 識別並修復影響業務的效能不佳的查詢。
- 閱讀查詢執行計劃，識別效能瓶頸。
- 記錄系統效能指標以進行趨勢分析。
- 學習設計資料庫並撰寫 Transact-SQL 代碼以避免常見問題。
- 理解索引的定義、功能和建立方法。
- 使用行業公認的最佳實踐，並了解如何制定自己的最佳實踐以達到最佳資料庫效能。

本書適合對撰寫業務關鍵的 Transact-SQL 查詢感興趣的人，以及負責確保這些查詢持續良好效能的人。開發人員、資料庫管理員、商業智能分析師和任何開發 Transact-SQL 查詢的人都會發現本書是一個不可或缺的資源，可以充分利用 SQL Server 2008 的功能。