sql server performance tuning videos

calculation.In fact, the goal of bitmap computing is very simple: pre-filtering , because our statement requires the result item to compare more than 10000 rows of data, in the thread behind us to take the parallel scan of the way to obtain the data. Due to the large amount of data, the various threads in the process of the completion of data acquisition time is different, in order to avoid the slow execution of a thread, resulting in overall congestion, the index introduced a bitmap operation

decomposition, it seems necessary to sort out a directory ....SQL Server Tuning Series BasicsSQL Server Tuning Series Basics (Summary of common operators)SQL Server

parameter mode, what problems the automation parameters will bring, and how to solve them.The problem itself is very simple, if you do not notice still occasionally will appear confused. Off Topic Have a little feeling very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the prob

very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the problems encountered, if you really want to find out, still have some theoretical knowledge to do the groundwork. Many times, often after encountering problems, recalled once good seems to have seen this aspect of theoretica

Original: SQL Server performance Optimization nolock, greatly improve database query performanceThe company database grows with time, the data is more and more, the query speed is also more and more slow. Into the database to see a bit, hundreds of thousands of of the data, the query is really time-consuming.To improve the query

SQL Server focuses on optimization of Stored Procedure performance, data compression, and page compression to improve IO performance (I ). Preface The SQL Server basic series is not over yet, And the last point is not written, and

physical disk when SQL Server reads the required data into the data buffer.Unfortunately, when we do query optimization, we do not need to consider physical reading. Although physical reads are likely to require more server resources than logical reads. Because SQL Server d

to have real value for real-world situations.Experience shows that you can get the most out of SQL Server performance from the general aspects of logical Database design, index design, query design, and application design. Conversely, the biggest performance problems are usually caused by defects in these areas. If yo

tuning also give the sort including CPU, run time, total IO, physical read, logical read, etc.Of course, my local machine itself is very small, and there are not many T-SQL statements running, so the chart tool shows a lot of emptiness.Take a look at the disk storageThis is generally the above content, their own use of the time to dig it, this article provides ideas.If the experienced DBA, I estimate that

ELSEStatement_end_offsetEND -Statement_start_offset)/ 2) fromSys.dm_exec_sql_text (sql_handle)) asQuery_text--, Plan_handle,db_name(qp.dbid), Qp.query_plan fromsys.dm_exec_query_stats Crossapply Sys.dm_exec_query_plan (plan_handle) QPORDER by(total_logical_reads+Total_logical_writes)/Execution_countDESC--indexes that have not been usedSELECTO.nameobject_name --Table name, I.name index_name--Index name, I.type_desc--whether the clustered index, S.user

. SQL Server Execution Time: CPU time = 17188 milliseconds, time consuming = 17261 milliseconds. (1 rows affected) SQL Server Execution Time: CPU time = 0 milliseconds, time consuming = 0 milliseconds. */ Comparing 2000 and 2008 can be found 2008 CPU time is significantly higher than 2000, 2008 work

, without being hindered by interaction. Like what: Use a specific report server as a front-end server to process all report creation requests, so that other servers are free to process interactive reports. Use one or more report servers to handle the production of ordered subscriptions or event-driven reports. General performance

SQL Server database self-optimizing release time under large data volume:2013-12-17 15:19:00 Source: Forum anonymous Keywords: database development1.1: Add secondary data filesStarting with SQL SERVER 2005, the database does not generate the NDF data file by default, generally there is a master data file (MDF) is enou

Tags: Microsoft CTI object Complex problem: Lis use parameter BinThis article belongs to theUnderstand the mysteries of performance-slow in applications, fast in SSMS"seriesNext: Understanding the Mysteries of performance-application slow, SSMs fast (5)--case: How to deal with parameter sniffing We put aside the argument sniffing topic and went back to the original point of concern in this series: Why is th

very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the problems encountered, if you really want to find out, still have some theoretical knowledge to do the groundwork. Many times, often after encountering problems, recalled once good seems to have seen this aspect of theoretica

The first thing to note is that the content of this article is not how to tune SQL Server query performance (about which you can write a book), but how to leverage the set STATISTICS IO and set STATISTICS in SQL Server query performance