mitel 3300

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In MySQL, case, then else end usage

Computer N 400 5 Chemical N 500 6 Mathematical N Some students choose to take several courses at the same time (100,200) Some students choose only one course (300,400,500). Students taking multiple courses are asked to choose a course as their major, with the major flag written in Y. Students who choose only one course, majoring in flag n (in fact, if written in Y, will not have the following trouble, in order to give

Oracle Dataguard Network Best Practices One

Tags: Oracle dataguard Best PracticesOracle Dataguard Redo Network Best practices (simplified translation)Oracle Dataguard Benefits:1 minimal impact on system performanceHere are two maximum available architecture (MAA) scenario configurations, with sufficient bandwidth to draw the following conclusions:1 DG in New York and Montreal (300 miles away, 10MS round trip delay), using real-time mode, at redo 4mb/s generation rate, can be achieved on the production system 5% performance impact and 0 da

case in syntax SQL then else end usage-resolves a field to take a different value based on the condition

selected master course ID The simple idea is to execute two different SQL statements to query.Condition 1--Condition 1: Only one course of students selected std_id, MAX (class_id) as Main_classfrom Studentclassgroup by Std_idhaving COUNT (*) = 1;Execution Results 1std_id main_class------ ---------- 4400 5500 6Condition 2-Condition 2: Select std_id for multiple courses, class_id as Main_classfrom studentclasswhere main_class_flg = ' Y ';If you use the case function, we ca

MongoDB Background Daemon mode start

Label:MongoDB can be started by command line and configuration file, the specific command is as follows: Command line: [[email protected] MongoDB] # ./bin/mongod--dbpath=/data/db Configuration file: [[email protected] MongoDB] # ./bin/mongod-f mongodb.conf However, both of these methods start the MongoDB process in the foreground, and if the session window is closed, the MongoDB process also stops. But MongoDB also provides a background daemon way to start, only need to add a "--fork" parameter,

Oracle Learning Notes

,last_name,salaryFrom EmployeesORDER BY salary Desc))where RN Sequence: Primarily used to provide primary key valuesTo create a sequence:Create sequence EmpseqIncrement by 10Start with 10MaxValue 100CycleNoCacheThe role of the sequence in the primary key position when the data is inserted into the table:First:CREATE TABLE Emp01AsSelect Employee_id,last_name,salaryFrom Employeeswhere 1=2And then:INSERT INTO EMP01VALUES (empseq.nextval, ' BB ', 3300)Mod

MySQL Common Operations Command

;show full processlist; #可以显示全部. If you log in with a regular account, only the user is shown.Modifying the MySQL listening port1. If the system comes with a RPM package:Modify/ETC/MY.CNF[Mysqld]Datadir=/var/lib/mysqlport=3300 #修改成你自己想要的端口Socket=/var/lib/mysql/mysql.sock[Mysql.server]User=mysqlBasedir=/var/lib[Safe_mysqld]Err-log=/var/log/mysqld.logPid-file=/var/run/mysqld/mysqld.pid2. If you are installing a source package or installing multiple MYSQ

Linux file permissions and directory configuration

tree] Features:The starting point of the directory tree is the root directory (/,root)Each directory layout can use the partition file system on the local side, and can also use the filesystem of the network.Each file has a unique filename in this directory tree (contains the full path)[Email protected] ~]# ls-l/Total Dosage 32lrwxrwxrwx. 1 root root 7 December 19:18 Bin--Usr/binDr-xr-xr-x. 3 root root 4096 December 11:52 bootDrwxr-xr-x. Root root 3300

Using Nikto to detect the technology used in a website

Nikto is an open source (GPL) Web server scanner that can perform a full range of scanning of Web servers with more than 3300 potentially dangerous file/cgis, over 625 server versions, and over 230 specific server issues, including a variety of potentially dangerous files, CGI and other problems, it can scan the specified host Web type, host name, specific directory, COOKIE, specific CGI vulnerability, return to host allowed HTTP mode, and so on. This

Mysql communication protocol and mysql communication protocol

startup thread ID8 byte: Challenge random number, used for database Authentication 1 byte: Fill value (0x00) 2 bytes: Used to negotiate with the client. Communication Mode: 1 byte: Database encoding 2 byte: server status 13 byte: Reserved byte 12 byte: Challenge random number, used for database Authentication 1 byte: fill value (0x00) Use tcpdump to listen and output the hexadecimal log as follows: [root@root ~]# tcpdump port 3306 -X......03:20:34.299521 IP root.mysql > 153.3.251.202.44658: Fla

Php attack protection code upgraded

Turkey   78.190.79.225 -- 13:25:22 --/ 3300 Turkey   78.190.84.230 -- 06:51:33 --/ 2719 Turkey   78.191.149.47 -- 08:34:34 --/ 8783 Turkey   78.191.233.108 -- 05:10:48 --/ 340 Turkey   78.191.94.126 -- 04:34:26 --/ 3091 Turkey   85.104.231.74 -- 08:03:53 --/ 3500 Turkey   85.104.49.60 -- 04:47:12 --/ 1037 Turkey  

PhpMyAdmin2.x. x-document (installation and configuration)

All configurable data is stored in config. inc. php3. $ Worker servers array PhpMyAdmin supports managing multiple MySQL-servers from version 1.4.2. Therefore, the $ regionservers array is added for storage. Logon information of different servers. $ Incluservers [1] ['host'] contains the host name of the first server, $ incluservers [2] ['host'] Is the host of the second server, and so on. If you only have one server to manage, you can simply ignore the other $ ingress servers The host name of

Apsaravideo for optical access network solution Optimization

effectively support the three-in-one business needs in the future. Services supported by the optical fiber access network include:1. INTERNET access: Provides normal INTERNET access to ensure sufficient bandwidth for browsing pages, uploading and downloading, and other common applications.2. VoIP: a future-oriented NGN network that provides network telephone services.3. IPTV/VOD: supports various unicast or multicast video services, including IPTV and VOD services in PC or set-top box mode. Res

Domestic wireless spectrum resource allocation Atlas

Domestic wireless spectrum resource allocation Atlas Domestic Mobile Communication spectrum distribution: Spectrum Distribution of three major operators TDD FDD Domestic wireless spectrum analysis 4G band Allocation Table Next Generation Communication System Frequency Not long ago, the National Radio Monitoring Center and the Global Mobile Communication System Association (GSMA) jointly released a cooperative research report on future broadband mobile comm

Use DNode to implement simple instance _ node. js for communication between php and nodejs

// Zing with argument 33Require 'lib/vendor/autoload. php '; // This is the class we're re exposing to DNodeClass Temp{// Compute the client's temperature and stuff that value into the callbackPublic function temperature ($ cb){}} $ Loop = new React \ EventLoop \ StreamSelectLoop ();$ Dnode = new DNode \ DNode ($ loop, new Temp ());$ Dnode-> connect (7070, function ($ remote, $ connection ){// Remote is a proxy object that provides us all methods// From the server$ Remote-> zing (33, function ($

About Chinese characters matching JS regular expressions

The general use of the regular is [\U4E00-\U9FA5], but this range is not complete. For example: /[\u4e00-\u9fa5]/.test ('? ')//test radicals?, return False According to Unicode version 5.0, to accurately determine a Chinese character to include: scope meaning Range meaning 2e80-2eff CJK radicals supplement 2f00-2fdf Kangxi Radical

MHA implements manual switching of mysql Master/Slave databases, and mhamysql Master/Slave Databases

synchronization database backup? 1. master server:# Master startLog-bin = "d:/log/mysql/mysql_log_bin"Server-id = 1# Master end2. slave server:# Slave startLog-bin = "D:/log/mysql2/log-bin.log"Relay_log = "D:/log/mysql2/relay-log-bin"# Slave id, different from the host idServer-id = 2# Host ip address, used by the slave machine to connect to the host# Master-host = localhost# Host port# Master-ports = 3300# The account you just created to copy host d

Notification on course upgrade and tuition fee adjustment of PHP excellent employment courses for Chuanzhi podcast on April 9

increased from three months to three and a half months. Added and optimized the core technologies of large portal websites, as well as heavy-traffic, large concurrency, and big storage, and advanced Redis technologies. In order to help students better employment and enhance their core competitiveness, among all PHP training institutions in China, it was the first and only one to add the in-depth optimization LNMP course (on a general 2G memory laptop, Nginx was optimized from 6000 to 18000 in c

Php attack protection code upgraded

Turkey   78.190.79.225 -- 13:25:22 --/ 3300 Turkey   78.190.84.230 -- 06:51:33 --/ 2719 Turkey   78.191.149.47 -- 08:34:34 --/ 8783 Turkey   78.191.233.108 -- 05:10:48 --/ 340 Turkey   78.191.94.126 -- 04:34:26 --/ 3091 Turkey   85.104.231.74 -- 08:03:53 --/ 3500 Turkey   85.104.49.60 -- 04:47:12 --/ 1037 Turkey  

Linux command to View host configuration information

Root Port (rev 01) 1800: 15.7 PCI bridge: VMware PCI Express Root Port (rev 01) 1900: 16.0 PCI bridge: VMware PCI Express Root Port (rev 01. 1 PCI bridge: VMware PCI Express Root Port (rev 01) 2100:16. 2 PCI bridge: VMware PCI Express Root Port (rev 01) 2200:16. 3 PCI bridge: VMware PCI Express Root Port (rev 01) 2300: 16.4 PCI bridge: VMware PCI Express Root Port (rev 01) 2400: 16.5 PCI bridge: VMware PCI Express Root Port (rev 01) 2500: 16.6 PCI bridge: VMware PCI Express Root Port (rev 01) 2

Write smart proxy Step by step 1 (theory brief)

native, then Redis returns a Errors Reply for the client, and the error content is a MOVE redirect, for example: 127.0.0.1:6494> Get B (Error) MOVED 3300 10.10.10.178:6494 At this time the client according to MOVED instruction, to connect 10.10.10.178:6494 instance, initiate the same request, get the correct data. Ideally, the Smart client can find the correct node by simply MOVED the jump once. When a slot is migrated, Redis marks the s

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