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oracle function (single) 1. Nvl (x1, x2), x1 and x2 are expressions, if x1 is null, return x2, if x1 is not null, then return x1 2. Nvl2 (x1, x2, x3) if x1 is null then return x3, x1 is not null is returned if x2 3. Concat to concatenate two strings,

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textmate default cursor is similar to emacs's. Vim shortcut keys are in fact people miss. If the cursor moves up and down about. Also dd, yy of these interesting keys. But emace is also very good! Such as ctrl + k, ctrl + e is easy to remember. cf: t

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(1) --- means a full-width characters occupy two standard character position. Chinese characters and provides full-width English characters and the national standard GB2312-80 of the graphic symbols and special characters are full-width characters. G

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Basic PL / SQL statement AS to change the title: AS column heading column name DISTINCT DISTINCT column name to delete a copy BETWEEN ... AND ... to retrieve the content between the two values ​​(including the C terminal value) IN the list of search

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9. A word boundary Metacharacter <<\ b>> is a match for the location of the "anchor." This match is 0 length match. There are 4 positions are considered to be "word boundaries": 1) The first character in the string before t

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Oracle string function is a function of the most widely used. LOWER: lowercase UPPER: uppercase INITCAP: capitalized CONCAT: Connect SUBSTR: intercept (parameter, start, number) LENGTH: The length of the string returned INSTR: (parameters, letters) t

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Sql - plus function: Oracle string function is a function of the most widely used. LOWER: lowercase UPPER: uppercase INITCAP: capitalized CONCAT: Connect SUBSTR: intercept (parameter, start, number) LENGTH: The length of the string returned INSTR: (p

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Oracle query in the conditions and functions (examples) Function in Oracle Sql - plus function: Oracle string function is a function of the most widely used. ² LOWER: lowercase ² UPPER: uppercase ² INITCAP: capitalized ² CONCAT: Connect ² SUBSTR: int

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String Functions Oracle string function is a function of the most widely used. Common String Functions LOWER: lowercase UPPER: uppercase INITCAP: capitalized CONCAT: Connect SUBSTR: intercept (parameter, start, number) LENGTH: The length of the strin

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In the usage of Oracle INSTR: INSTR format method INSTR (source string, to find the string, starting from the first few characters, the first of several matches to find the serial number) Back to find the location, if not found, returns 0. For exampl

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Property list: http://www.littleyu.com/article/fso.html Small example: http://blog.csdn.net/zyxlsh/archive/2009/08/12/4437557.aspx FileSystemObject Object Dictionary object stores data key, item pairs. Drive object provides a disk drive or network sh

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Highlighted by reference to the page keyword search engine When most of the pages using the search engine's "cached" function will return a snapshot of the page to add keyword highlighting features. It would be very easy to find the content of t

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JAVASCRIPT String is one of the few large objects, this comprehensive analysis of the String object Unicode characters Characters are Unicode characters in JavaScript, so you can effectively deal with international characters (eg Chinese characters).

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tail command tail-f filename From the specified point to write the file to standard output. Using tail-f option can easily access the log file is changed, the most current end of file command will display the contents on the screen, and not only refr

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When the majority of Web search engines use the "cached" function will return a snapshot of the page to add keyword highlighting features. It would be very easy to find the content of the page is retrieved, which highlight the keywords google sn

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concat () - two or more combinations of text characters and returns a new string. indexOf () - returns a substring in the string appears at the first index. If no match, returns -1. charAt () - Returns the character position. lastIndexOf () - Returns

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Operational needs, the installation installed oracle 11g, other machines on the import time of backup data, an error occurs: IMP-00019: ORACLE error 12899 rejected because the line IMP-00003: ORACLE error 12899 encountered ORA-12899: column "ZHENG&qu

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Turn http://www.w3school.com.cn/js/jsref_exec_regexp.asp Definition and Usage exec () method is used to retrieve the regular expression string matching. Syntax RegExpObject.exec (string) parameter description string required. To retrieve the string.

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We are here for the SQL Server string functions listed in different categories for easy access and memory, I believe we have advanced in other aspects of the programming base, literally everyone knows the meaning of these functions, not to make too m

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We are here SQL Server string functions listed in different categories for easy access and memory, I believe we have advanced in other programming basics, from literally everyone knows the meaning of these functions, do not make too much of these fun

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IndexOf method returns a String object is the first occurrence of substring within a character position. strObj.indexOf (subString [, startIndex]) Parameters strObj Required. String object or text. subString Required. String object to find the string

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Returns the string expression specified in the start position. Transact-SQL Syntax Conventions Syntax CHARINDEX (expression1, expression2 [, start_location]) Note If one of expression1 or expression2 Unicode data types (nvarchar, or nchar) and the ot

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I turn, look at their own convenience 1. Transfer function: js provides parseInt () and parseFloat () two conversion functions. Former is converted to an integer value, which is the value converted to floating point. Only call these methods on String

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Function: split () Function: Use a specified separator to split a string stored in the array example: theString = "jpg | bmp | gif | ico | png"; arr = theString.split ("|"); / / Arr is a character value contains "jpg", "

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Transfer http://database.51cto.com/art/201009/225705.htm The following string functions sql server will be classified an explanation, I believe that these string functions sql server you can use the method of learning SQL database can play a helpful

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Transfer from http://database.51cto.com/art/201009/225705.htm The following string functions sql server will be classified an explanation, I believe that these string functions sql server can use the methods you learn SQL database can play a helpful

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Number Constructor new Number () Number (value) Constants: Number.MAX_VALUE the largest number of Number.MIN_VALUE smallest book Number.NAN non-numeric Number.NEGATIVE_INFINITY negative infinity; overflow is returned to the value Number.POSITIVE_INFI

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01. Oracle installation is complete, the initial password? 02. ORACLE9IAS WEB CACHE initial default user and password? 03. Oracle 8.0.5 how to create database? 04. Oracle 8.1.7 how to create database? 05. Oracle 9i how to create database? 06. Oracle

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SQL in single-record function 1.ASCII return to the specified number of characters corresponding to decimal; SQL> select ascii ('A') A, ascii ('a') a, ascii ('0 ') zero, ascii (' ') space from dual; AA ZERO SPACE --------- --------- --------- -------

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Common functions: substr and instr 1.SUBSTR (string, start_position, [length]) Praying for Children in the string, return string Explained: string per string start_position start position (starting from 0) length options, the number of substrings For

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1. About InStr function InStr function is a string function, its role is to return a string in another string for the first time to appear. InStr function format: InStr ([start,] string1, string2 [, compare]) InStr function syntax parameters of the f

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# Include <stdio.h> Input function: int getc (FILE * fp), int fgetc (FILE * fp), int getchar (void), char * fgets (char * buf, FILE * fp), char * gets (char * buf), size_t fread ( void * ptr, size_t szie, size_t nobj, FILE * fp). Output function: in

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1.substring method Definition and Usage substring method is used to extract the string specified subscript intermediary between the two characters. Grammar stringObject.substring (start, stop) Parameter Description start required. A non-negative inte

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js indexof usage, JavaScript indexof method indexOf () definition and usage indexOf () method returns a string value specified in the string for the first time to appear. Grammar stringObject.indexOf(searchvalue,fromindex) Parameter Description searc

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If exec () to find the matching text, then returns a result array. Otherwise, returns null. This array element 0 is a regular expression that matches the text, the first one element is RegExpObject 1 of sub-expression matches the text (if any), the f

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Snake is the prototype of the console in the windows in character mode, under which use of C + + written Snake. The main effect is achieved, the user using 'w', 's', 'a', 'd' up and down left and right respectively, when the obstacles encountered whe

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Linux command line editing shortcuts: history shows the command history list ↑ (Ctrl + p) display a command ↓ (Ctrl + n) show the next command! Num execute the command history list, the first num Order!! Enforcement of an order! ? string? implementat

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SQL in single-record function 1.ASCII return to the specified number of characters corresponding to decimal; SQL> select ascii ('A') A, ascii ('a') a, ascii ('0 ') zero, ascii (' ') space from dual; AA ZERO SPACE --------- --------- --------- -------

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oracle function: abs (m) m the absolute value mod (m, n) m is the remainder after n addition to power (m, n) m of the n-th power round (m [, n]) m n-bit rounded to the decimal value of (n defaults to 0) trunc (m [, n]) m n-bit decimal place truncatio

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In the usage of Oracle INSTR: INSTR method format INSTR (source string, to find the string, starting from the first few characters, the first few matches to find the serial number) Returned to find the location, if not found then return 0. For exampl

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substr () function can split the text, but separate text if included Chinese characters often run into problems, then you can use mb_substr () / mb_strcut this function, mb_substr () / mb_strcut of use and substr () is similar only in mb_substr () /

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Yesterday, a project, identified a problem, (0.3). ToString () value is not "0.3" and "0.30000000001", and (0.2). ToString () value is "0.2", very much puzzled. In that the string "0.3", so can only be (0.3). ToFixe

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<script LANGUAGE="javascript"> var u = "http://msdn.microsoft.com:80/scripting/default.htm"; var s = / (\ w +): \ / \ /([^/:]+)(: \ d *)?([^# ]*)/; var a = s.exec (u); for (i = 1; i <a.length; i + +) ( alert (a [i]); ) </ S

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As title, need to explain! Each matching pattern needs to explain that / g mean ah? Thank you. There str.replace (/ ^ \ s *(.*?)[ \ s \ n] * $ / g, '$ 1') of $ 1 'mean? A: g stands for global (all), is to open the global match, $ 1 is equal to the pr

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Id in the tree structure generated when I want to direct to PID | Digital | .. in the form to generate a list of numbers every time I get a list of the id, while taking the last one | sign behind the maximum number of +1 to save new node. But I did n

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While JavaScript has many useful, but processing the string is one of the most popular one. Let us in-depth analysis of the use of JavaScript string operation. In the JavaScript in, String is the object. String objects are not stored as character arr

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Scintilla Guide (2) - Full text search and modify From http://blog.csdn.net/skyremember/archive/2008/09/27/2985512.aspx In Scintilla, each character behind the characters that are related to a pattern of bytes, characters and style of bytes byte char

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. Expression Period (.) Matching string in a variety of print and non-printing characters, only one character exception. The exception is the newline (\ n). The following regular expression match aac, abc, acc, adc, etc., and a1c, a2c, ac, and a # c:

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SQL in single-record function 1.ASCII return to the specified number of characters corresponding to decimal; SQL> select ascii ('A') A, ascii ('a') a, ascii ('0 ') zero, ascii (' ') space from dual; AA ZERO SPACE --------- --------- --------- -------

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A variety of PHP string functions summary PHP language is a string function is easier to understand knowledge. Today we are all summed up for the nearly 12 species of PHP string functions, in the hope they need to help a friend, a friend of PHP knowl

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