The document discusses SQL query analyzer tools and database maintenance. It covers SQL query analyzer, execution plans, column statistics, running the analyzer, query tuning, optimization, and other analyzer tools like the profiler and tuning advisor. It also discusses database maintenance tasks like managing transaction log files, eliminating index fragmentation, ensuring accurate statistics, and establishing an effective backup strategy. The document demonstrates some of these tools and tasks.

1. SQL Analyzer tools&Database MaintenanceHans Schellingerhoudt16 februari 2011Presentation is createdforNspyre Technologie Group .Net

2. ProgramSQL Query Analyzer

3. Introduction

4. Execution plan

5. Column Statistics

6. Analyzer

7. Query tuning

8. Optimization

9. User Statistics

10. Demo

11. Other analyzer tools

12. Introduction Profiler

13. Tuning advisor

14. Demo

15. Database Maintenance

16. Introduction

17. Maintenance tasks

18. Demo

19. Questions2

20. SQL Query Analyzer3

21. IntroductionIntroduction “Query Analyzer”SQL Query Analyzer no longer exist as single “tool” (since SQL Server 2005/2008).

22. Integrated in Management Studio.

23. Visualizes execution plan / statistics information

24. A query execution plan outlines how the SQL Server query optimizer actually ran (or will run).

25. An execution plan, simply put, is the result of the query optimizer's attempt to calculate the most efficient way to imple­ment the request represented by the T-SQL query you sub­mitted.

26. You can use the execution plan to identify the exact piece of SQL code that is causing the problem4

27. Execution planFacts about the SQL Query AnalyzerSQL Query Analyzer has number of steps, one of them is the query optimizer.

28. Optimizer uses the statistics to calculate the cost-based plan, the optimal way to execute the query. It calculates a number of plans.

29. Statistics exists for relevant columns and indexes.

30. Estimated execution plan is the output of the optimizer.

31. Actual execution plan is the output of the actual query execution