Key) country (country) population (population) China 600 USA 100 Canada 100 UK 200 France 300 Japan 250 Germany 200 Mexico 50 India 250 According to the population data of this country, the number of population in Asia and North America is counted.
The following result should be obtained. Continent Population Asia 1100 North America 250 Other 700 what would you do if you want to solve this problem?
Creating a view with a continent code is a workaro
example, the following SQL, you can never get the "second class" this result The code is as follows Case is col_1 in (' A ', ' B ') then ' first Class ' When Col_1 in (' a ') then ' second class ' Else ' other ' END Let's take a look at what you can do with the case function. One, the known data in a different way to group, analysis. There is the following data: (in order to see more clearly, I did not use the country code, but directly with the country name as primary Key) Country (country) po
indicates that you can get to know more friends in Q's circle of friends. On the right side is a guide to the use of facial recognition functions. the "camera" and "grimace" inside are also symbolic expressions. does this look more interesting? If it is plain text, it will be too monotonous and boring.
Emoji classification
There are many Emoji versions, including uniied, DoCoMo, KDDI, Softbank, and Google. the Emoji code of different versions is di
This article describes how to enable users to automatically jump to the wap website when entering the URL of the wap mobile website, for more information, see how to enable users to automatically jump to the wap website when entering the wap mobile website URL?
How does one implement automatic jump of wap pages?
How can I determine whether a visitor is accessed by a mobile device and automatically jumps to the wap page?
The mobile phone automatically jumps to the mobile phone page. Does one webs
rate that you support and the baud rate supported by the other side." ”Mr. Matsumoto is there to look at the document carefully, I can only stand next to wait, no way, the biggest customer ah.Sanyo's strength is still strong, as evidenced by the equipment they have tested.On my first day here, Mr. Matsumoto took out an Excel document detailing a "Keep with bands", including a total of 129 mobile phones from three major Japanese carriers, AU, SOFTBANK
Recently, in the development of emoji, we need to understand the knowledge of Unicode. Learn the notes below.1,unicode code is a cross-platform common, it is a number, representing the computer display symbols (such as: CJK, Latin characters, etc.);2,unicode use digital 0-0x10ffff to map these characters;3,utf-8 encodes Unicode in bytes. You can use 1~6 bytes to represent a Unicode code, as shown below.
Unicode/ucs-4
Bit number
UTF-8
BYTE number
0000
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