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Objective: with the release of SQLServer2014 on July 15, 201441, the performance of SQL server has been greatly improved, so that more and more users and DBAs are using other databases gradually turn to MSSQL. Here is a personal Blog for you to answer Objective: with the release of SQLServer2014 on June 1, the performance of SQL

This PPT is the course I shared at the MVP OPEN Day comunity camp. I chose this theme because a lot of people have asked this question, and there are few related topics, so I would like to share my relevant experience so that we can refer to it.In the process of summarizing PPT, I am grateful to my DBA colleague who has shared my personal experience, and I am grateful to the Microsoft China MVP team for inviting me to share relevant experience.PPT can

the view to the underlying base table. If the SELECT statement in the view definition specifies a GROUP by clause, the key for a unique clustered index can only refer to the column specified in the GROUP by clause. The SELECT statement in the view cannot contain the following Transact-SQL syntax elements:The select list cannot specify columns using the * or table_name.* syntax. You must explicitly give the dequeue name 在创建索引视图的select语句中，不能存在重复的列名 A v

A few days ago I saw an article titled "SQL Server DBA thirty questions", which is very good and pertinent. These questions can be answered only after some operation experience is required. Many of these questions can be found through books online. I am also very interested in some questions because I have also handled similar problems, so I was very impressed. N

What is a trace tag? For DBAs, mastering trace flag is one of the prerequisites for becoming a master of SQL Server, and in most cases, trace flag is just a sword-walking slant, not necessary, but in many cases, using these tags will allow you to better control the SQL The behavior of the server. Here is the officia

"IT168 technology" used to communicate with some DBAs and database developers about what kind of db tools they used, most of whom had not used other tools except SSMS and profile, and, admittedly, ssms and profile were powerful enough Most of the work is done by them, but MS, third-party companies and even individual developers provide SQL Server with a lot of other tools, and if you can fully master these

)) 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

, containing the number of rows in the table, not including the number of data entries in the index From Sys.dm_db_partition_stats P INNER JOIN sys.objects o On p.object_id = o.object_id where p.object_id= object_id (' Table name ') GROUP BY O.name --by page or district statistics, have performance impact, accurate --Displays space information for the data and indexes of all tables or views in the current database --Include: logical fragmentation, zone fragmentation (fragmentatio

Label:In a Microsoft SQL Server 2008 system, the database administrator, or DBA, is the most important role in the administration. The DBA's goal is to ensure that the Microsoft SQL Server 2008 system runs properly and efficiently. The DBA's work is also the busiest job, whe

As SQL Server DBA, we often complain that Microsoft's own tools are not good, but can be used to open the box is very rare. The following three separate GUI tools are included in SQL Server 2012 for use by SQL

memory allocation in order to ensure that each component is in efficient use.Memory Broker can schedule the allocation of allocations between various components that use caching, such as buffer Pool, query Executor, query Optimizer, and so on. Through the monitoring of memory requirements and consumption, through the dynamic allocation algorithm with feedback and improvement mechanism, to coordinate the formation of the best memory allocation between the components.SELECT * from sys.dm_os_ring

keys but try not to use), press win+ R key out to run the column input SSMS can open SQL Server Management Studio, check the table by ALT+F1 to view the table properties (sp_help), the New Query window shortcut key is Alt+n, these are more commonly used shortcut keys, It is easy to operate your database.15. Sometimes when you create or modify a table or a field after you execute a query or write out a new

describes the channel after the connection is established, through which the Request can be sent and the channel can remain idle. Therefore, the Session is not bound to a particular Scheduler.SELECTs.session_id, R.command, R.[Status], R.wait_type, r.scheduler_id, W.is_preemptive, T.task_state, u.cpu_id fromSys.dm_exec_sessions assINNER JOINSys.dm_exec_requests asR ons.session_id=r.session_idINNER JOINSys.dm_os_tasks asT onR.task_address=t.task_addressINNER JOINSys.dm_os_workers asW onT.worker_a

SQL Server tempdb allocation Competition is a problem for DBAs, and almost all DBAs now know how to build several more files to solve Mitigate the problem. But deep competition is still inevitable. Here's to you. The characteristics of downstream mark in tempdb make it replace the temporary table/table variable object in a certain scene to solve the deep problem of tempdb competition. Before throwing this

bwhere a.plan_handle=b.plan_handle and [email protected] and[email protected] and size_in_bytes> @size_in_bytesORDER BY size_in_bytes DescEndElseBeginprint ';print ' system went wrong! ';print '--------------------------';print ' input type is incorrect, please verify ';print '--------------------------';End15.sqlserver R2 on Windows Server R2 when building a SQL Serve