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Summary of Row-to-column conversion problems-1. Row-to-column conversion (various problems in the forum will be sorted out later) --- 1. Simplest row-to-column Conversion/* Question: Suppose there is a student orders table (TB) as follows:Name course scoreZhang San Language 74James math 83Zhang San physical 93Li Si language 74Li Si mathematics 84Li Si physical 94 (The following result is displayed ):Name, C

Designing an application system does not seem difficult, but it is not easy to optimize the system performance. In the development of tools, database design, should There are multiple options for application structure, query design, and interface selection, depending on the specific application requirements and the skills of the development team. This document uses SQL Server is used as an example to discuss application performance optimization techni

FastCGI; Java Servlets is supported. Install Apache Next we will start a long journey to conquer Apache. Through step-by-step demand instances, we will learn how to use Apache step by step, from getting started to being proficient. The system does not need too many computing resources to run Apache. It runs well on a Linux system with 6-10 MB hard disk space and 8 mb ram. However, running Apache alone may not be what you want to do. More likely, you want to run Apache to provide the WWW Servic

above, even if ASP. net Ajax framework, which has been integrated with the VS2008 development environment, and an ASPAJAXExtSetup needs to be installed in VS2005. msi and perform Web. to implement ASP. net Ajax framework. With the ASP.net Ajax framework, we can use WebService in JavaScript to call the background. CS file code. Part 1 Server I.Asp.net AjaxBasic knowledge The installation package of Microsof

Article Title: setting up a DNS server in Linux (1 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 1. Introduction to Domain Name System 　　 1. Domain Name System 　　 The domain na

"Unpackwars= "true"Autodeploy= "true"> ValveClassName= "Org.apache.catalina.valves.AccessLogValve"Directory= "Logs"prefix= "Localhost_access_log."suffix= ". txt"pattern= "%h%l%u%t quot;%rquot;%s%b" /> Host> Hostname= "www.gacl.cn"AppBase= "F:\JavaWebApps"> ContextPath=""DocBase= "F:\JavaWebApps\JavaWebDemo1"/> Host> Engine> Service>Server>Third, the principle of encryption on the InternetThe tomcat

FileZillaIt is a fast and reliable FTP client and server-side open source code program with a variety of features and intuitive interfaces. FileZilla Server is a software in the FileZilla project. Many friends may need FTP Server software in practical applications. There are many such software, including Serv-U and G6. Here we will introduce FileZilla

the hard installation. If the server does not respond, the client will retry the installation in the background. If the server does not respond to a soft installation request, NFS displays the message: Connection timeout An error is returned after the remote file system is installed. Unfortunately, in file system operations, many programs do not check the returned results, so you will not see this error m

--Way Oneif exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ Usp_procedurewithtransaction_demo] and OBJECTPROPERTY (ID, N ' isprocedure ') = 1)drop procedure [dbo]. [Usp_procedurewithtransaction_demo]Go-- =============================================--Author: --Create Date: --Description: -- =============================================Create PROCEDURE [dbo]. [Usp_procedurewithtransaction_demo]AsBeginSET Xact_abort onBegin Transa

Today, every time you make a mobile phone call, read the news on the main portal website, and make an online bank transaction, your access information will go through the Server Load balancer device, it ensures massive network application access in the background. We can see that it is by our side. Sudden increase in network traffic: the emergence of independent Load Balancing Devices There were not many early Internet applications, mainly Email, chat

Label:SQL Server Connection Problem case resolution (1) reprinted from: Http://blogs.msdn.com/b/apgcdsd/archive/2015/04/27/sql.aspx?CommentPosted=true#commentmessageMicrosoft Network Monitor (Netmon) is a Web protocol data analysis tool released by Microsoft that leverages Netmon to capture and view and analyze network data. Netmon often plays a key role when dealing with connectivity issues with SQL

Install the MySQL-server-5.6.13-1.el6.x86_64.rpm in RedHat6.3 first download the following three files: MySQL-client-5.6.13-1.el6.x86_64.rpmMySQL-devel-5.6.13-1.el6.x86_64.rpmMySQL-server-5.6.13-1.el6.x86_64.rpm and then use the r

process of disaster recovery, in simple terms, is the following steps: Clone all virtual servers in area A, and revert to the ESX server in area B. Open firewall port to ensure the connectivity between servers. Sets the application portion of the server. The first two steps are fixed routines that can be done according to standard practice. The 3rd step, the application of the part, t

. The password is transmitted in plain-coded but encrypted text. Line. Client Certificate authentication uses the SSL channel for authentication. It needs to install the customer certificate in the Web Proxy service certificate library on the ISA Server computer, and the certificate should be mapped to the appropriate user account. ISA Server only provides customer certificates when configuring SSL bridging

The configuration file of the Apache server is located in the usrlocalapacheconf directory. Traditionally, three configuration files httpd. conf, access. conf, and srm. conf are used to configure the behavior of the Apache server. Httpd. conf provides the most basic server configuration, which describes how the daemon httpd runs. srm. conf is a service. The confi

Original source: http://blog.csdn.net/dba_huangzj/article/details/38438363, featured catalogue:http://blog.csdn.net/dba_huangzj/article/details/37906349 No person shall, without the consent of the author, be published in the form of "original" or used for commercial purposes, and I am not responsible for any legal liability. Previous article: http://blog.csdn.net/dba_huangzj/article/details/38398813 Objective: A linked server (Linked

Where 1 =-1 and 1 = 1 will it affect the query efficiency ?, Where-1 Today, when I use SQL profiler to talk to an SQL statement generated at the underlying layer, I followed the following code: WITH TempQuery AS (SELECT *, ROW_NUMBER () OVER (order by CreateTime DESC) AS

FCS, select the application instance to be viewed, and select View Detail. Next we will understand the development process of the FCS Application by actually creating a FCS Application.The following table lists the tasks required to develop the application:1. Name the application and register the application on the server. For example, if the application name is my_app, create a directory named my_app unde

Http://www.edong.org/main/content/view/259/42/Written by: Administrator 2004-05-18 Ms SQL server password plaintext transmission is a security defect. I will not describe the specifics. If you are interested, please refer to this article: in-depth exploration of SQL2000 network connection security issuesSo I can only talk about how I implement SQL Server 2000 SSL. Because there are a lot o

Original: Chapter 1 securing Your Server and Network (5): Encrypted session with SSLSource: http://blog.csdn.net/dba_huangzj/article/details/38063823, Special catalogue:http://blog.csdn.net/dba_huangzj/ article/details/37906349No person shall, without the consent of the author, be published in the form of "original" or used for commercial purposes, and I am not responsible for any legal liability. Previous