# T2 BOn a. Name = B. Name collate chinese_prc_ci_ai_ws
Ii. Sorting rule introduction:
What is a sorting rule? "In Microsoft SQL Server 2000,The physical storage of strings is controlled by sorting rules. Sorting rules specify the bit mode and storage of each characterRules Used for saving and comparing characters. "Run the following statement in the query analyzer to obtain all the sorting rules supported by SQL Server.
Select * From: fn_helpcollations ()
The name of a sorting rule consists of
row in set (0.00 sec)6. String concatenationSelect CONCAT (f_name, "", l_name)AS NameFrom employee_dataWhere title = 'marketing Executive ';+ --------------- +| Name |+ --------------- +| Monica Sehgal || Hal Simlai || Joseph Irvine |+ --------------- +3 rows in set (0.00 sec)Note: The CONCAT () function is used to concatenate strings. In addition, we also use the previously learned AS to give the result column 'concat (f_name, "", l_name) 'A Kana.
5
.
The EUC-CN can be understood as an alias for GB2312, which is exactly the same as GB2312.
The location code should be considered as the definition of Character Set, defining the included characters and character location, while GB2312 and EUC-CN are the encoding of this character set in the actual computer environment. HZ and ISO-2022-CN are two types of codes corresponding to the location code Character Set, both of which use a 7-bit encoding space to support Chinese characters. The relations
Abstract ClassWeapon {2PublicBullet bullet;3Public VoidFire (){4 Gameworld. getinstance. append (bullet );5 }6}
In this way, the code is easy to understand without comments.
3. Clear code structure
For example, when writing an android input method, you must determine the language type of the Input Method: Hiragana, full-Katakana, half-Katakana, full-alphabet, half-alphabet, and half-number. In addition, you need to consider the input keyboard type, QWERTY keyboard,
-0xf7fe.The EUC-CN can be understood as an alias for gb2312, which is exactly the same as gb2312.The location code should be considered as the definition of Character Set, defining the included characters and character location, while gb2312 and EUC-CN are the encoding of this character set in the actual computer environment. Hz and iso-2022-cn are two types of codes corresponding to the location code character set. They both use a 7-bit encoding space to support Chinese characters. The relation
to be updated frequently. For example, the information stored in the LDAP directory is very effective:
Telephone number book and organization structure of company employees
Customer Contact Information
Information required for computer management, including NIS ing, email Kana, and so on
Configuration information of the software package
Public certificate and Security Key
When should I use LDAP to store data?
Most LDAP servers are specially o
Server line supports a unicode sequence and a non-unicode sequence. The non-unicode sequence includes the character collation and sorting sequence. In SQL Server 2000, you can set a single unit for Word Segmentation and sequential synthesis. You can select the Unit during personal security, or you can select the unit when the item is created, it is also possible to specify a specific bit when the data table is created, or to use the method for determining the string in the T-SQL formula, such a
* from # T1 a inner join # T2 B on A. Name = B. Name collate chinese_prc_ci_ai_ws
Ii. Sorting rule introduction:
What is a sorting rule? "In Microsoft SQL Server 2000,The physical storage of strings is controlled by sorting rules. Sorting rules specify the bit mode and storage of each characterRules Used for saving and comparing characters. "Run the following statement in the query analyzer to obtain all the sorting rules supported by SQL Server.
Select * From: fn_helpcollations ()
The name of
pk_contact_contactid clustered index on the person. Contact table. For this table, pk_contact_contactid is both a primary key and a clustered index.
Figure 2-15
From the seek predicates section, we can see that this operation directly connects the HumanResources. Employee table and the contactid column of the person. Contact table.
Nested loop join (nested loop join)
Figure 2-16
As the name suggests, the nested loop Join Operation uses nested double-layer loops. In our plan, the result of the
Virtual-key codes
--------------------------------------------------------------------------------
The following table shows the symbolic constant names, hexadecimal values, and mouse or keyboard equivalents for the virtual-key codes used by the system. The codes are listed in numeric order.
Constants
Vk_lbutton (01)Left mouse button
Vk_rbutton (02)Right mouse button
Vk_cancel (03)Control-break Processing
Vk_mbutton (04)Middle mouse button (three-button mouse)
Vk_xbutton1 (05)Windows 2000/XP: X1
The best font for programming: m +
The optimum equal-width font for programmers is m +.
This font is an accidental opportunity to experience it in the Kod editor. This font is unusual. I have insisted on this option for more than three years.
// Editor note: Kod is an editor for development on the OS X platform.
I have read a lot of articles about programming fonts (10 good programming fonts of equal width and 5 best programming fonts), but this cute font is not on the list.
On the Retina scre
[_ WidthSensitive]| _ BIN
ParametersCollationDesignatorSpecifies the basic sorting rules used by Windows sorting rules. Basic sorting rules include:Specifies the alphabet or language in which the sorting rules are applied when sorting by dictionary is specified.The code page used to store non-Unicode character data.For example, Latin1_General or French, both use the code page 1252 or Turkish, and use the code page 1254.Casesensiti.pdfThe CI parameter is case insensitive and the CS parameter is
AS to give the result column 'concat (f_name, "", l_name) 'A Kana. 5.1 create table command: create table
For example, to create a table named MyClass,
Field name
Numeric type
Data width
Empty or not
Primary Key?
Auto-Increment
Default Value
Id
Int
4
No
Primary key
Auto_increment
Name
Char
20
No
Sex
Int
4
No
0
Degree
Double
continue to use the PS2 interface keyboard,USB Keyboard has undoubtedly become the mainstream. Double click"keyboard"under the"HID Keyboard Device", in"Driver Program"Page Click"Update Driver... ". And then tap"Browse the computer to find the driver software" ,"from the list of device drivers for your computer, select", and remove"Display compatible hardware"before the tick. at this point you should be able to see the list divided into two columns 。 On the left side of " manufacturer " l
, the front of a byte (what he calls a high byte) from 0xa1 to 0xf7, The next byte (low byte) is from 0xa1 to 0xFE, so we can assemble about 7,000 + Simplified Chinese characters. In these codes, we also put mathematical symbols, Roman Greek alphabet, Japanese kana have been compiled into, even in ASCII, the number, punctuation, letters are all re-compiled two bytes long code, this is often said "full-width" character, and the original under 127th is
AsciiIntroduction: The first appearance of the encoding, full name: American Standard code for Information Interchange, U.S. Information Interchange standards codesContent: uppercase and lowercase letters, numbers, punctuation, spaces in contiguous byte states (excluding extended character sets)Length: 1 bytes 8 bitNumber: Initially 0~127 with the popularity of the computer expanded to 255, the latter is called the " extended character Set ", finally reached the threshold, the first 128 is uncha
Source: "Bi thing" data stream conversion--character mapping tableThe feature map transformation shows the characteristics of the columns in the data stream, the editing interface is simple, there is only one label interface, click on the column to be mapped, you can choose to add a new column or need to update the column. You can give an alias to the original column in the Output alias column, and select the action you want to take, with the following types of actions:
Byte reversal: Reve
president of ProFlowers Marketing, said: "It's a waste of time to analyze your data." We need a way to navigate the data that will allow us to take immediate action. "7. What is the most likely purchase for the current user who is logged into the site? Ebags in Denver aims to sell suitcases, handbags, wallets and other travel services for frequent flyers. The company uses Kana Software's e-marketing Suite to integrate its website's Oracle database, J
, and there are more than 6,000 commonly used Chinese characters need to be preserved. But this hard-to-do wisdom of the Chinese people, we do not hesitate to those 127th after the strange symbols are directly canceled, stipulating: a character less than 127 is the same as the original, but two more than 127 words connect prompt together, it represents a Chinese character, The previous byte (which he calls the high byte) is used from 0xa1 to 0xf7, followed by a byte (low byte) from 0xa1 to 0xFE,
HTTP input characters, you must set it in php. ini.
Example #1 disable HTTP input conversion in php. ini
; Disable HTTP input conversion mbstring. http_input = pass; disable HTTP input conversion (PHP 4.3.0 or later) mbstring. encoding_translation = Off
When PHP runs in the Apache module. These settings can also be overwritten through each Virtual Host command in httpd. conf or. htaccess in each directory ).There are several methods to convert the HTTP output character encoding. One is php. ini
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