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executed using the index ....First the nonclustered index contains the column: [Orderid],[customerid]The value we want to get is filtered according to Shippostalcode, so to get the result you have to do a single scan of the nonclustered index (index Scan), which can also, after all, nonclustered indexes are ordered, but in order to filter, you must introduce a bookmark lookup (Key Lookup) To filter, we know that the bookmark lookup is random io, the consumption is huge, so this filter is like i

Original: SQL Server Tuning Series play turn three (use index hint (Hint) to boot statement maximum optimization run)ObjectiveThis article continues to play the content of the module, about the location of the index in SQL Server No need to say, this article will analyze how to use the Hint Bootstrap statement to fully use the index to run, as well as a solid gra

Label:ObjectiveIn the previous article, we analyzed the usage of query hint as the first of the last play module of tuning series. Interested can click to view: SQL Server Tuning Series play turn (how to run with query hint (Hint) bootstrap statement)This article continues to play the contents of the module, the same, or want to grasp the previous series of content, before entering the content of this modul

(8000) Select @sql =isnull (@sql + ' union All ', ') + ' select name, [Course]= ' +quotename (name, ' "') + ', [score] = ' +quotename (name) + ' fro M TB ' from syscolumns WHERE name!= ' name ' and id=object_id (' TB ')--table name TB, not including other columns named name ORDER by Colid exec ( @sql + ' ORDER by name ') go 3. Using SQL Server 2005 static SQL --sql SERVER 2005 Dynamic SQL SELECT n

way.Follow target (following target):There are two ways, one method NPC looks stupid, one method looks more intelligent, the first method is to let the NPC follow the target of the road point, almost no resource consumption. The latter is to let the NPC in the following time, in the breath event to determine the other party's current position, and then go straight, encountered obstacles in a * around the past, the design will consume a certain amount of system resources, so do not recommend the

Home Install SQL Server How to turn on SA user logon:(Remember to follow the Web site operation, the final must be in the "Administrative Tools" in the "service" in the "SQL Server (MSSQL server)" to deactivate once before starting, or still cannot use SA login)In the new SQL installation, the following error occurred

the "cloud computing" popular now, also recommend the high-speed development of the site, the use of "cloud storage" such a solution, can help you solve all kinds of storage, expansion, disaster preparedness, but also to do a CDN acceleration. The most important thing is that the price is not too expensive.Summary, about the image Server schema extension, roughly around these issues: Capacity planning and scaling issues. Data synchroniza

all missing index determined by SQL Server. This analysis is not as comprehensive as the database Engine Tuning Advisor does, but it shows the obvious missing index. In fact we just want to not appear in this list any missing index, which represents our database design better.Finally, I would like to remind you:Most of the data sources for these statistics come from the so-called dynamic management view (DMV) in SQL

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of Nginx reload. Index is the server, upstream is the name of the upstream in the configuration, and name is the server ip,status is the state of the server, rise is the number of successive checks of the server, fall is the number of consecutive check failures, check Type is the way to check that the check port is th

system processes, monitoring the current number of processes in the system. monitoring principle Monitoring Bao uses the standard SNMP protocol to provide server monitoring functionality to users, which means that the SNMP agent (SNMPD) must be running on the monitored server. Next we'll detail how to install, turn on the SNMP agent on a Linux

browser will appear "certificate error, Navigation blocked", the browser that the current to access the host is not secure , do not recommend continued access, click on it can continue to visit, as shown in:　　4.3. Install digital certificateIn order for the browser to trust the digital certificate we generated, we need to install the digital certificate into the browser, IE8 the browser as an example of the certificate installation instructions, the installation steps are as follows:　　After the

ProxyBack technical analysis: can turn your computer into a proxy server malware On the Internet, anonymous proxy plays an important role in protecting personal privacy. However, when someone turns their system into a proxy server without permission, their situation is dangerous. Palo Alto Networks researchers have discovered a family of malware called ProxyBack

Add. $ git commit-am "Init a base version,add a first file for push to server" $ git Remote add origin [email protected]:mytestproject.git $ GIT push origin master In this way the server has created a basic version of a Mytestproject.git repository, and now other members can just clone from the serverTheUnder window, go to the local directory where you want to clone, right-click the GIT

the statement is executed using the index ....First the nonclustered index contains the column: [Orderid],[customerid]The value we want to get is filtered according to Shippostalcode, so to get the result you have to do a single scan of the nonclustered index (index Scan), which can also, after all, nonclustered indexes are ordered, but in order to filter, you must introduce a bookmark lookup (Key Lookup) To filter, we know that the bookmark lookup is random io, the consumption is huge, so this

In an article on black passenger traffic about the impact of Web page opening speed on SEO, which mentions the benefits of Web page opening gzip compression, Next I will share with you how to turn on gzip compression under Windows system IIS server.First let's look at what is Gzip,gzip is the GNU zip abbreviation, it is a GNU Free software file compression program, also often used to represent the gzip file format. Gzip can greatly accelerate the site

Label:Stored procedures: SQL Server Stored Procedures Blog Park on an article, explained in very detailed, there are test code, very practical. Execute dynamic SQL statements in SQL Server stored procedures The curse and blessings of the dynamically SQL stored procedures and Cursors learning notes Blog Park, very basic, very meticulous, good article. T_sql statement: SQL

Windows Server 2003 comes with Automatic Updates for the latest patches released by Microsoft, fixes security vulnerabilities, system compatibility, and so on. The premise requires the use of effective cd-key. In the domestic network, the genuine certification of Windows Server 2003 does not have the strict Windows Server 2008, in general, as long as the Cd-key c

,seek percentage later. Represents a stop, pause, and jump to a percentage of a position. verify: Turn on a VLC and open rtp://226.0.0.6:1234. It should be ready to play. 7. Erecting a unicast serverThe output in the 6th step is replaced by the unicast address on the line. The others are the same. Be careful not to have new names. 8. Save the operation just nowContinue typingSave D:/01.cfg has just saved the operation to d:/01.cfg inside, except con

Turn the Raspberry Pi into a Web server, you can control the Raspberry Pi by visiting the Web page, for example: Check the camera \ Turn on the light and so on.The thought of Linux Web server, the first thing we think of IS, Apache + MYSQL + Php.Raspberry Pi can install this lamp series, but Apache and MySQL for Raspbe