TAILIEUCHUNG - Hướng dẫn học Microsoft SQL Server 2008 part 136

Thực hiện kế hoạch truy vấn thông dịch viên tin rằng trí thông minh là khả năng trừu tượng - để tạo ra một cái gì đó mới ở một mức cao hơn dựa trên cấu trúc nguyên thủy. | Interpreting Query Execution Plans I believe that intelligence is the ability to abstract to create something new at a higher lever based on more primitive constructs. The ability to express thoughts using words composed of letters and simple sounds is abstraction to turn beats and notes into a melody is abstraction and to turn 1s a 0s in CPU registers into a programming language and then use that language to develop an application represents multiple layers of abstraction. Interpreting SQL Server query execution plans is abstraction inside-out. SQL as a declarative language is an interesting study of abstraction because the underlying primitive operations that execute the query are dynamically determined based on more than just the SQL query. The art of SQL Server performance tuning and optimization PTO is essentially the skill of reading the query execution plans and understanding how to manipulate the factors that determine the physical operations in an effort to improve performance. The operations inside a query execution plan are the language of SQL Server PTO which is why this part of the book begins with reading and interpreting the query execution plan. IN THIS CHAPTER The language of performance tuning and optimization Viewing saving and working with query execution plans Reading query execution operators Viewing Query Execution Plans The SQL Server development team has exposed the query execution plan in several places and in several formats making it easy to find view and work with query execution plans Management Studio s Query Editor can display the estimated or actual query execution plan as a graphic or as XML. Showplans return the query plan as a message or a result set. 1313 Part IX Performance Tuning and Optimization SQL Profiler can capture the query execution plan as plain text or as XML that can be viewed in graphic form. Query plans in cache may be viewed using dynamic management views. Additionally .

• Cơ sở dữ liệu
• Giáo trình SQL Server 2008
• Microsoft SQL Server 2008
• quản trị dữ liệu
• cài đặt SQL Server 2008
• công cụ của SQL Server 2008
• Giáo trình Microsoft SQL Server 2008
• Quản trị cơ sở dữ liệu
• Cài đặt Microsoft SQL Server 2008
• Cấu trúc trình đơn của Microsoft SQL Server 2008
• Cơ sở dữ liệu SQL Server 2008
• Dịch vụ Report trong SQL Server 2008
• SQL Server Business Intelligence Development Studio
• Bảo mật cơ sở dữ liệu SQL Server 2008
• SQL Server 2008
• Cơ bản SQL Server 2008
• Kiến trúc SQL Server 2008
• Phục hồi cơ sở dữ liệu