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  • mysql - How select a akin records?

    - by zeroonea
    I have a table with name varchar address varchar country varchar city varchar ..... to store address of location example: name|address|country HaLong hotel|156 blahblah street|Vietnam Hotel Ha Long|156 blah blah|Vietnam Two rows above is duplicate data. I have a form, when user submit new location. The code need to find akin records to give a message (ex: This location already in db, use it or create new?) How to make a query to get akin record like this?

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  • MySQL: SUM in WHERE clause

    - by checcco
    Hi guys, I've got this table CREATE TABLE `subevents` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(150) DEFAULT NULL, `content` text, `class` tinyint(4) NOT NULL DEFAULT '1', PRIMARY KEY (`id`) ) ENGINE=MyISAM Each row can have a different value in the 'class' field. I'd like to select any number of rows, ordered randomly, as long as the sum of the values in the 'class' field is equal to 100. How could I accomplish it directly in the MySQL query without doing it later in PHP? Thanks everybody!

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  • wait t time before launch an action ?

    - by Nanis
    Hi, I actually had a multiautocompletetextview, where i call host after 3 characters to have a dynamic search list. But if the user put others characters, my code call host for each of them. So it must be very long. Could I wait a moment (about 500 ms) before launching the action , in order to look if user do an action or not ? that's possible ?

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  • Parse CSS out from <style> elements

    - by awj
    Can someone tell me an efficient method of retrieving the CSS between tags on a page of markup in .NET? I've come up with a method which uses recursion, Split() and CompareTo() but is really long-winded, and I feel sure that there must be a far shorter (and more clever) method of doing the same. Please keep in mind that it is possible to have more than one element on a page, and that the element can be either or .

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  • Pass variables between separate instances of ruby (without writing to a text file or database)

    - by boulder_ruby
    Lets say I'm running a long worker-script in one of several open interactive rails consoles. The script is updating columns in a very, very, very large table of records. I've muted the ActiveRecord logger to speed up the process, and instruct the script to output some record of progress so I know how roughly how long the process is going to take. That is what I am currently doing and it would look something like this: ModelName.all.each_with_index do |r, i| puts i if i % 250 ...runs some process... r.save end Sometimes its two nested arrays running, such that there would be multiple iterators and other things running all at once. Is there a way that I could do something like this and access that variable from a separate rails console? (such that the variable would be overwritten every time the process is run without much slowdown) records = ModelName.all $total = records.count records.each_with_index do |r, i| $i = i ...runs some process... r.save end meanwhile mid-process in other console puts "#{($i/$total * 100).round(2)}% complete" #=> 67.43% complete I know passing global variables from one separate instance of ruby to the next doesn't work. I also just tried this to no effect as well unix console 1 $X=5 echo {$X} #=> 5 unix console 2 echo {$X} #=> "" Lastly, I also know using global variables like this is a major software design pattern no-no. I think that's reasonable, but I'd still like to know how to break that rule if I'd like. Writing to a text file obviously would work. So would writing to a separate database table or something. That's not a bad idea. But the really cool trick would be sharing a variable between two instances without writing to a text file or database column. What would this be called anyway? Tunneling? I don't quite know how to tag this question. Maybe bad-idea is one of them. But honestly design-patterns isn't what this question is about.

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  • Do I need to cast the result of strtol to int?

    - by Kristo
    The following code does not give a warning with g++ 4.1.1 and -Wall. int octalStrToInt(const std::string& s) { return strtol(s.c_str(), 0, 8); } I was expecting a warning because strtol returns a long int but my function is only returning a plain int. Might other compilers emit a warning here? Should I cast the return value to int in this case as a good practice?

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  • C#: Loop through substring patterns in a string

    - by ilann
    my pattern is the following: {(code)} where code is a number (up to 6 digits), or 2 letter followed by a number. For example: {(45367)} {(265367)} {(EF127012)} I want to find all occurrences in a long string, I can't just use pure regex , because I need to preform some action when i find a match (like logging the position and the type of the match).

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  • Manually Add a User to Database ASP.NET?

    - by user364878
    Hello, So when your using ASP.NET Wizards to create a login, it uses a set of auto generated tables using the aspnet_regsql.exe tool... When you create a user using the wizard it generates a very long userID "a40cf936-1596-4560-a26c-450792e2c8c0" I want to add users using another program that connects to this database... but how does visual studio auto-generate this ID. I want to auto-generate it as well Any ideas? Thanks in advance. -Scott

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  • What font do you use for your code editor?

    - by Harmen
    For a long time I used Courier New as default font for my code editor, until I got more into typography and found this new fixed-width font called Triskweline: The font is beautiful, but unfortunately it works only at size 10pt. This made me wonder: what (custom) font do you use for your code editor?

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  • Faster RSpec with JRuby

    - by jpoz
    Hello, I'm pretty new to the whole JRuby world. I'm using RSpec on a pretty big test suite. I'd like to be able to run the specs frequently but the JVM takes so long to startup it's becoming a real time drain. Is there a way to keep the JVM running? or a way to get specs to run faster with JRuby? Thanks in advance for the help, JPoz

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  • What values do the walkback array in the SocketException contain?

    - by akhilss
    Recently I have debugging into a problem where a connection to a database server from the application server get reset. I am pretty sure there is no reset being called from either end. But while I was debugging into the problem, while inspecting the SocketException, I found the walkback variable. arg0 SocketException (id=11532) cause SocketException (id=11532) detailMessage "Connection reset" stackTrace null walkback long[50] (id=11618) What do the values in this variable represent?

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  • C++ finding pointer errors

    - by Tony
    Hello! I am currently on a project which has been buggy for a long while, now I suspect, among other things, that there is pointer errors in the code. The program is written in native C++ using COM and uses out-of-process COM servers. Can anybody give me some tips as how one would go about finding these errors? Is there specific things to keep in mind, ways to do it, etc...

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  • Using the same variable across multiple files in C++

    - by Sam152
    In the process of changing some code, I have spilt some functions into multiple files. I have the files controls.cpp and display.cpp and I would like to be able to have access to the same set of variables in both files. I don't mind where they are initialized or declared, as long as the functions in both files can use them. This was not an issue when the functions were in the same file, but now it seems almost impossible after an hour of googling and trying various things.

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  • how to get around the command line length limit

    - by Crash893
    I've been working on a small and simple program that i drop files onto and based on certian rules they are moved to diffrent places. the program works fine unless i drop more than a few files on the program then it kicks back an error (that appears to be more windows than anything) that the start up command c:\myapp.exe \file \file \file is to long I realize i could set up a background proccess but i really would prefer that this program not run in the backround (where it would be idle 99.999999999% of the time) Can anyone think of any way around this limitation?

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  • Hibernate-Search: Search records from the last x hours, x days, x months, x years?

    - by Aaron
    @Entity @Table(name = "USERS") public class User { @Id @GeneratedValue(strategy = GenerationType.AUTO) private long id; @Column(name = "USERNAME", nullable = false, length = 20) private String userName; @Column(name = "PASSWORD", nullable = false, length = 10) private String password; @Column(name = "Date", nullable = false ) private Date date; } How can I select the records which have the date between [now | now-x hours] [now | now-x days] [now | now-x months] [now | now-x years]

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  • possible to change a script when it is running?

    - by Daniel
    Suppose a script has 1000 lines, and the 10 line has a command takes a long time to run and when I find it is running line 10, I find I need to change line 100, is it possible to do that without stop the script first? We can also stop a process by using command pstop, but I don't know how to let the process to re-read the script and continue to run from where it paused.

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  • Batch save in CastleProject ActiveRecord

    - by Alex
    I need to save thousand of records in a database. I am using CastleProject ActiveRecord. The cycle which stores that amount of objects works too long. Is it possible to run saving in a batch using ActiveRecord? What is recommended way to improve performance?

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  • How to send data many times to web browser in response to one request?

    - by robert_d
    I have a form on my web page, it allows to submit many queries to my website, every query is on a separate line in TextArea. Because waiting for all queries to complete is too long I would like to update the web page after every query completes - send result of one query to a web browser, new result should be appended to old results that are already on the web page. How to do this in ASP.NET MVC 2? I will be grateful for helpful responses.

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