special-characters

问题 please help! I am using sqlite3 in ipython notebook to create an SQL database. I think I have successfully created the database, but when I go to look at it I am receiving an encoding UTF8 error. Here is my code: import sqlite3 conn=sqlite3.connect('example.db') c=conn.cursor() c.execute('''DROP TABLE PROFILE''') c.execute('''CREATE TABLE PROFILE ( FIRSTNAME TEXT PRIMARY KEY unique NOT NULL, LASTNAME TEXT NOT NULL, EMAILADDRESS TEXT NOT NULL, PASSWORD TEXT NOT NULL, CURRENTJOBTITLE TEXT NOT

问题 I need to include the special character "%" in my LIKE clause in a SQL query, e.g.: Select * From Some_Table Where Field_Name Like 'bla%bla&2'; How do I write that? 回答1: If you want to match Field_Name values that contain 'bla%bla&2', then you need to write this: set define off Select * From Some_Table Where Field_Name Like '%bla\%bla&2%' escape '\'; You get to specify which character you want to use to escape a following character (thanks should go to mathguy, not me). You also have to set

问题 Some joker made a Lotus database/applet thingy for tracking engineering issues in our company. The joke is that the key piece of information was named with a special character... a number sign (hash tag, pound sign, \u0023). abbreviated sample: KA# Issue Date Current Position 27144 1/9/2014 Accounting 27194 12/20/2012 Engineering 32474 4/21/2008 Engineering 32623-HOLD 4/25/2016 Engineering 32745 11/13/2012 SEPE 32812 10/30/2013 Engineering 32817 12/7/2012 Purchasing 32839 1/8/2013 SEPE I

问题 I'm trying to store a string in a variable, then expand that variable in a sed command. Several of the values I'm going to put in the variable before calling the command will have parentheses (with and without slashes before the left parentheses, but never before the right), new lines and other special characters. Also, the string will have double quotes around it in the file that's being searched, and I'd like to use those to limit only to the string I'm querying. The command needs to be

问题 I'd like to write a regex that would remove the special characters on following basis: To remove white space character @ , & , ' , ( , ) , < , > or # I have written this regex which removes whitespaces successfully: string username = Regex.Replace(_username, @"\s+", ""); But I'd like to upgrade/change it so that it can remove the characters above that I mentioned. Can someone help me out with this? 回答1: string username = Regex.Replace(_username, @"(\s+|@|&|'|\(|\)|<|>|#)", ""); 回答2: use a

问题 I am considering getting a domain that contains an accented character (it contains an á). However, I noticed that only some companies offer them. Is there a general problem with those domains or will I have certain disadvantages when using one? 回答1: The DNS protocol only supports ASCII. Domains with accented characters in them are encoded to ASCII using Punycode. That means that your domain éxàmplê.com is actually xn--xmpl-0na6cm.com . It is a virtual certainty that there is lots of software

问题 I have a table containing a list of name which might contain special character: id name 1 Johän 2 Jürgen 3 Janna 4 Üdyr ... Is there a function that replaces each character for another specific one? (Not necessarily an unaccented one). Something like this: SELECT id, function('ä,ü',name,'ae,ue'); Result: id name 1 Johaen 2 Juergen 3 Janna 4 UEdyr ... 回答1: No, there are no this function. Probably is not to hard to write optimized C extension what does it. But C language is not necessary always

问题 I have a table containing a list of name which might contain special character: id name 1 Johän 2 Jürgen 3 Janna 4 Üdyr ... Is there a function that replaces each character for another specific one? (Not necessarily an unaccented one). Something like this: SELECT id, function('ä,ü',name,'ae,ue'); Result: id name 1 Johaen 2 Juergen 3 Janna 4 UEdyr ... 回答1: No, there are no this function. Probably is not to hard to write optimized C extension what does it. But C language is not necessary always

问题 I want to converter all special characters into Html encoded characters. I found many post related to used HttpUtility.HtmlEncode(); , but it's only convert some of special characters like "&", "<", ">" . Is there any way to convert all special character like "š","Ø","þ","›","Ù" into Html entity using C# or javascript? 回答1: The Microsoft AntiXss Library can accomplish this; string p = Microsoft.Security.Application.Encoder.HtmlEncode("aaa <b>sdf</b> š,Ø,þ,›,Ù", true); Response.Write(p); For

问题 While making a translation to a YouTube video (translations can only be in Unicode, no other markup is possible as far as I know of), I stumbled across the concentration of H + in orange juice. It is supposed to be one times ten to the negative 3.5 molar. I'd like to write it down as "1·10 -3,5 M" (mind the comma, it is translated to dutch). The problem is that I can not find a superscript comma or even a superscript period between all 120,520 unicode graphical characters. Does someone have