SQL Server

SQL Server Extended events (Extended events)-Extended events session with System_healthThe System_health session is an extended events session that SQL Server contains by default. The session starts automatically when the SQL Server database engine

. The comparison of Clear () has no meaning, because it is only to empty the DataTable, in the heap to allocate memory, the general comparison is also more close () method, but the DataTable does not have this methodThe difference between Dispose

Original: How to quickly compare two tables in SQL ServerHow to quickly compare two tables in SQL ServerUnconsciously write the last blog post for 2014 years ~In general, how to detect the content of the two tables is consistent, reflected in the

ObjectiveIn the previous article, we analyzed how the query optimizer works, including: detailed operation steps of the query optimizer, analysis of filter conditions, optimization of index items, and other information.In this article we analyze the

XML query in SQL Server: FOR XML specifies pathObjectiveIn SQL Server, XML queries can specify Raw,auto,explicit,path. This article uses some examples to introduce XML queries that specify path in SQL Server.Path number of referencesPATH ('

Original address: http://www.cnblogs.com/jfzhu/p/4006744.htmlReprint please indicate the sourceThe computer must set up a fixed IP, join the domain, and then install the account needs to have local administrator permissions.The operating system for

CREATE PROCEDURE YourprocedureAsBEGINSET NOCOUNT on;Begin TRY---------------------Start catching exceptionsBEIN TRAN------------------Start a transactionUPDATE A SET a.names = b.names from table 1 as A INNER JOIN table 2 as B on a.id = b.IDUPDATE A

One, the computer Super Administrator account has the database administrator rightsLog in to the database with the Administrator account and modify the SA account password directly.Ii. accounts without administrator privileges in the databaseSQL

SQL Server View we often use the following to introduce you to the advantages and disadvantages of using SQL Server view, you want to have more knowledge of your SQL Server view.You must understand the pros and cons of the view before you design it,

Operating system: Microsoft Windows 7 Ultimate Edition (32-bit)Database version: SQL Server 2005 Simplified Chinese Development BoardDatabase download Link: http://pan.baidu.com/share/link?shareid=322740&uk=268517599 (address updated 2013-03-09)-----

If you installed visual Studio. NET 2005 or 2008 before you installed SQL Server 2005, and you selected SQL Server 2005 Express when you installed VS, unfortunately, after SQL Server 2005 was installed, You will not find the Management Studio

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

V. Lock and TRANSACTION isolation levelsTransaction ISOLATION level The simple thing is that when the transaction is activated, the control transaction causes the locking of the SQL statement to be kept multiple, and the extent of the impact, in

----------------------------------------SQL Server Build database-Build table-build constraints Create school databases-------------------------------------- --before creating the School database: first to determine if the database exists, if it

Inserting dataT-SQL provides several data-inserted statements: Insert VALUES, insert SELECT, insert EXEC, SELECT into, and BULK insert.INSERT Values Statement:INSERT into dbo. Orders (OrderID, OrderDate, Empid, CustID) VALUES(10001'20090212' 3'A')

I believe a lot of friends, whether it is to do development, architecture, or DBA, are often heard of the word "tuning". Talk about "tuning", may make a lot of technical staff heart passion, also may make a lot of people feel distressed, do not know

This article is the tenth article of the SQL Server Agent series, please refer to the original text for details In the first few of these series, you reviewed the security roles under the msdb library for authorizing access to SQL Server Agent.

One, the installation configuration of the Windows Server 2012 system primary DomainFeature Description:SQL Server A failover cluster appears on the network as a single instance of SQL Server on a computer. Within a cluster, only one node at a time

Comparison of paging stored procedures and performance of five types of SQL Server, SQL stored procedures In SQL Server database operations, we often use stored procedures to implement paging processing of the queried data to facilitate browsing by

Execute SQL Server database backup and SQL database backup using Windows batch processing commands Create mybackup. bat and enter the following content to directly run the script to start automatic database backup. You can also add the script to the