sql server performance tuning videos

By changing the vast majority of SQL queries into stored procedures, such operations can undoubtedly improve some of the performance. All operations using "SELECT * from XXX" are specific to the required fields. A query that uses joins to connect more than 2 large amounts of data, and queries that have little variation on the underlying datasheet, uses the view and indexes the view. The reason comes from th

I like to think of tools bundled with SQL Server as inverted pyramid type, tools for diagnosing and checking general problems at the top, finding and diagnosing problem-specific areas of the tool at the bottom. In addition to providing a convenient way to write SQL scripts, Query Analyzer is the resource you need to use when you need to address specific

Tags: time interval fetch number release operation rebuild file GIF world loadThe IO performance of SQL Server is affected by the IO latency of the physical disk and the IO operations performed internally by SQL Server. When monitoring disk

Original: SQL Server Tuning Series Basics (Index operations Summary)ObjectivePrevious articles we introduced how to view the query plan, the introduction of common operators, the way of parallel operations, interested can click to view.This article will analyze in SQL Server

Tags: default int query full table scan condition index default policy wildcard1. Building an Index2. Avoid full table scanAvoid using is null, which is not NULL, so that writing discards the index of the field.If this is the case, try to set the default value when designing the tableCompare operators in! = Use less intLike wildcards try to put wildcards behind "qw%" and do not use fuzzy queries, which use the indexwhere L = R use less function operations, arithmetic operations, and other expres

Books Online logical operators and physical operator references Refer to the book SQL. server.2005. Technical Insider "series Conclusion This article mainly introduces some of the methods of index operation, mainly describes the way we usually apply when writing statements, and to cite a few examples, as a point, in fact, we usually write in the statement is nothing more than this article introdu

Original http://www.cnblogs.com/BoyceYang/archive/2013/06/15/3138142.html Read navigation 1. Overview 2.RulesLogic Database Design 3.EnableDesign with efficient Indexes 4.EnableEfficient Query Design 5.EnableLow performance analysis with technology 6. Summary 1. Overview This is the most effective way to optimize SQL server

Label:SELECT Mig.index_group_handle, Mid.index_handle, CONVERT (Decimal (28,1), Migs.avg_total_user_cost * Migs.avg_user_impact * (Migs.user_seeks + Migs.user_scans) ) as Improvement_measure, ' CREATE index idx_ ' + object_name (object_id,database_id) + ' _missing_ ' + Replace (replace (replace (ISNULL (Mid.equality_columns, ') + ' _ ' + ISNULL (Mid.inequality_columns, '), ', ', ' _ '), ', '), ' [', ' '), '] ', ') + ' On [' + object_name (object_id,database_id) + '] (' + ISNULL (mid.equality_col

)) FROM Seq WHERE id Then we execute this stored procedure and insert the test data. SQL Server Management Studio records the operation time in the lower right corner of the output window. To be more intuitive, we manually wrote a statement that records the time, as shown below: DECLARE @ d datetimeSET @ d = getdate () print 'start to execute the stored procedure... 'exec pro_Count_Test; S

attention, on the SQL Server performance tuning of the content is very broad, followed by the analysis in the article.If you have any questions, you can leave a message or private messages, and look forward to an in-depth study of your child's shoes with SQL

statement tuning from the execution plan, and introduces three common connection operators and aggregation operators, the next one will focus on some of our other most commonly used operators and tuning techniques, including: Curd operators, Union operators, index operations, Parallel computing and so on, the content of SQL