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How to Use Case in SQL (Part 2)

Next 4. Conditional update. For example, the following update conditions are available: For employees with a salary of more than 5000, the salary is reduced by 10%. Employees with salaries between 2000 and 4600 increase by 15% You can easily choose to execute two update statements, as shown below: -- Condition 1UpdatePersonnelSetSalary = salesary * 0.9WhereSalary >=5000;-- Condition 2UpdatePersonnelSetSalary = salesary * 1.15WhereSalary> = 2000AndSalary However, it is

How to Use Case in SQL (Part 2)

How to Use Case in SQL (Part 2) Next 4. Conditional update. For example, the following update conditions are available: For employees with a salary of more than 5000, the salary is reduced by 10%. Employees with salaries between 2000 and 4600 increase by 15% You can easily choose to execute two update statements, as shown below: -- Condition 1Update personnelSet salary = salary * 0.9Where salary >=5000;-- Condition 2Update personnelSet salary = salary * 1.15Where salary> = 2000 and salary

Android determines whether phonegap is connected to the Internet and loads the super. loadUrl URL

Copy codeThe Code is as follows: public void onCreate (Bundle savedInstanceState ){ Super. onCreate (savedInstanceState ); Super. setIntegerProperty ("splashscreen", R. drawable. splash ); ConnectivityManager cwjManager = (ConnectivityManager) getSystemService (Context. CONNECTIVITY_SERVICE ); NetworkInfo info = cwjManager. getActiveNetworkInfo (); If (info! = Null info. isAvailable ()){ Super. loadUrl ("http://www.xxx.com", 4500 ); } Else { Super. l

Tcpdump pt-query-digest common operations,

-xtcpdump: verbose output suppressed, use-v or-vv for full protocol decodelistening on any, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes2018-01-24 09:49:54. 443184 IP Route> 10.27.139.176.3306: tcp 0 0x0000: 4500 0034 430d 4000 4006 cc1e 0a1b 8bb2 0x0010: 0a1b 8bb0 e254 0cea e057 2c39 e536 d965 0 0x0020 : 8011 007b 7867 0000 0101 080a 1676 5325 0x0030: 1606 9833 # hexadecimal packet content... [root @ archpredb214 ~] # Tcpdump-s 65535-

StorageTek resends McDATA's Sphereon 4300 optical fiber switch

McDATA announced that StorageTek will sell McDATA's Sphereon 4300 optical fiber switch with Flexport technology to its global customers, providing easy edge connections for enterprises of all sizes. StorageTek, Vice President and General Manager of Information lifecycle management solutions, Mark? "McDATA's storage network products are very helpful for promoting StorageTek's information lifecycle management solutions because they can reduce costs and complexity for customers, it also helps the

TCP's handling of sack and the processing details of the chaotic sequence

possible in the SACK block to contain the packets that have been ordered out of order, until the length of TCP option is reached, the order of these blocks to indicate "which packets recently received", the more recent packets received ( The wording is not accurate, according to the TCP standard, should say is the data section! Should be in the front, this is similar to the principle of the LRU list. This helps the data sender to make precise decisions.2.3. When the receiving end responds with

IP check and COMPUTE

/wKioL1hnTW-iW2EMAABf2E4I1pw146.jpg-wh_500x0-wm_3 -wmp_4-s_1128173143.jpg "title=" 9.jpg "alt=" wkiol1hntw-iw2emaabf2e4i1pw146.jpg-wh_50 "style=" padding:0px;margin:0 Px;vertical-align:top;border:none; "/>Assume that the IP header is: 4500 0046 17d9 0000 4011 ec1d(check field) ac1c 0f3b ac1c 0f3dCalculation: 4500 + 0046 +17d9 + 0000 + 4011+ EC1D +ac1c + 0f3b + ac1c + 0f3d The checksum to be filled is the

Some basic concepts related to video

information:In Avimainheader:The dwstart and dwlength fields specify the starting time of the AVI file and the length of the file. The units is defined bydwrate and Dwscale. The dwstart field is usually set to zero.The dwscale and dwrate fields is used to specify, the general time scale, the file would use. In the addition to the time scale, the each stream can has its own time scale. The time scale in samples per second are determined by dividing dwrate by Dwscale.In Avistreamheader:Dwscale is

VS Application Templates The calculation of taxes and real wages

DoubleSfgz, SL, SSKCS, YFGZ,A,YJS;//salary should be paid (basic salary), tax rate, calculator deduction, salary should be issued, judge the standard, pay the amount of tax//double QZD = 3500;//It's useless to start a levy.Console.Write ("Please enter your salary number:"); Yfgz=convert.todouble (Console.ReadLine ()); //(Salary payable-3500) * Tax rate-Calculator deduction = How much tax should be paid////1500//4500//9000//35000//55000//80000a=yfgz-35

"Netizen's" "The Life cycle of a program ape"

have new creations. Do things as well, can not be isolated, a friendly working environment, often get unexpected harvest.The author also wrote that his father was laid off for 6000 yuan, the author used 4500 to buy a computer, it can be imagined that the author was under the pressure of how big. The author did not waste this 4500, he not only learned the knowledge of the class, but also learn other, such a

PAT Branching Structure-101 Thoughts

Suppose the individual income tax is: tax rate * (Salary-1600). Please write a program to calculate the income tax payable, where the tax rate is defined as: When wages do not exceed 1600, the tax rate is 0; When the wage is in the interval (1600, 2500), the tax rate is 5%; When the wage is in the interval (2500, 3500), the tax rate is 10%; When the wage is in the interval (3500, 4500), the tax rate is 15%; When wages exceed

MsSqlServer statement _ MySQL-mysql tutorial

-- If the score is 100-if the score is 90, select * fromTblScoreselect (casewhentEnglish90then Liang whentEnglish100then excellent end) and math (casewhentMat -- if the score is greater than 100) -- If the score is greater than 90 good Select * from TblScore Select English score = (Case when tEnglish> 90 then 'Liang' when tEnglish> 100 then 'out' end ), mathematical score = (case when tMath> 90 then 'Liang' when tMath> 100 then 'out' end) from TblScore -- Second exercise 1 2 3 Select * from user

Use iptables to restrict specified ip addresses to access the specified port and website

-- to-destination 192.168.100.2: 500 Iptables-t nat-a prerouting-p udp -- dport 4500-d $ INTERNET_ADDR-j DNAT -- to-destination 192.168.100.2: 4500 NAT of the FTP server Iptables-I PFWanPriv-p tcp -- dport 21-d 192.168.100.200-jACCEPT Iptables-t nat-a prerouting-p tcp -- dport 21-d $ INTERNET_ADDR-j DNAT -- to-destination 192.168.100.200: 21 Only access to the specified URL is allowed Iptables-A Filter-p u

LinuxSystemandPerformanceMonitoring (Network)

broadcast every 15 seconds: # Ls-l slice. dat-Rw-r-1 root 3430 Jul 10 slice. dat# More slice. datDate segs bytes rexsegs rexbytes new active-----------------------22:19:41. 913288 46 5672 0 0 1 122:19:56. 913288 131 25688 0 0 0 122:20:11. 913288 0 0 0 0 0 022:20:26. 913288 5975 4871128 0 0 0 122:20:41. 913288 31049 25307256 0 0 0 122:20:56. 913288 23077 19123956 40 59452 0 122:21:11. 913288 26357 21624373 5 7500 0 122:21:26. 913288 20975 17248491 3 4500

Tianchi Middleware Competition Golang version service mesh ideas sharing

{case req = Provider load balancing: Weighted polling, 最小响应时间 (effect not very obvious) TCP Connection Load balancing: Supports selecting TCP connections by minimum number of requests. Dubbo request 批量encode . Optimization of TCP parameters: Turn on Tcp_nodelay (disable Nagle algorithm) and adjust the buffer size for TCP send and read/write.if err = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_NODELAY, *config.Nodelay); err != nil {logger.Error("cannot disable Nagl

(turn) video bitrate, frame rate and resolution of the connection and difference

, which has the following fields: Start, Length, scale, and rate, as described in the information:In Avimainheader:The dwstart and dwlength fields specify the starting time of the AVI file and the length of the file. The units is defined bydwrateand Dwscale. The dwstart field is usually set to zero.The dwscale and dwrate fields is used to specify, the general time scale, the file would use. In the addition to the time scale, the each stream can has its own time scale. The time scale in samples p

The base class library of the. NET tutorial

We have seen the "base class library" module multiple times in the previous. NET platform structure diagram (Figure 1-3 and figure 1-4. Note that in 1-3, the top of CLR is. net base class library. This base class library provides a unified, object-oriented, hierarchical, and scalable programming interface from basic input and output to data access. You can also see that the base class library can be called and extended by various languages, that is, whether it is C #, VB. NET or VC ++. net, you

UBUTN installation of Nvidia graphics driver

, 2000Quadro FX Series:FX Go1400, FX 5800, FX 580, FX 570, FX 5600, FX 560, FX 5500, FX 550, FX 540, FX 4800, FX 4700 X2, FX 4600, FX 4500 X2, FX 4500, FX 4000, FX 380 LP, FX 3800, FX 380, FX 370 low profile, FX 3700, FX 370, FX 3500, FX $, FX 3450/4000 SDI, FX 340 0/4400, FX 1800, FX 1700, FX, FX 1400, CXQuadro Notebook Series:k5000m, k4000m, k3000m, k2000m, k1000m, 5010M, 5000M, 4000M, 3000M, 2000M, 1000M

How to install rancher in CentOS 7

If you want to use rancher, you need to install Docker, if the official website is not open, you can also visit the site link reference installationOf course, the official website installation rancher is also more detailed, if you can open, may wish to see SysInfo[Root@gitlab ~]# Cat/etc/redhat-releaseCentOS Linux release 7.2.1511 (Core)[Root@gitlab ~]# Uname-aLinux gitlab 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_64 x86_64 gnu/linux[Root@gitlab ~]# Docker-vDocker

Shell sort sort Big discussion

3000Sohu 100 4500$ sort-k 1.1,1.1-u Facebook.txtBaidu 100 5000Google 110 5000Sohu 100 4500The same is also the case with the Guge of the first character G is not immune to the difficulty.$ sort-n-K 2-k 3-u Facebook.txtGuge 50 3000Sohu 100 4500Baidu 100 5000Google 110 5000Hey! With the two-tier sort priority set here, you do not delete any rows using-U. The original-U is going to weigh all the-K options, will be the same will be deleted, as long as th

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