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  • Selecting info from multiple tables for one unique ID with PHP and MySQL

    - by Mark
    I'm using PHP and MySQL. Is this the best method to select information about "user_1" from four different tables? I know it works, because I have tried it. But is this the preferred method of selecting information from multiple tables for "user_1"? $query = "SELECT table_1.username, table_2.city, table_3.state, table_4.country FROM table_1 JOIN table_2 ON table_1.username=table_2.city JOIN table_3 ON table_1.username=table_3.state JOIN table_4 ON table_1.username=table_4.country WHERE table_1.username = 'user_1'";

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  • Multiple Instances of a single MEF DLL

    - by Travyguy9
    Apparently .NET 4.0 does not have the PartCreator/ExportFactory for non-SL. Which is something I think I need for this. I was wondering if someone can help me (with an example please) of how to create multiple instances of the EXPORTED type in a DLL. Basically say I have a DLL that contains a type ConsoleLogger and it uses the interface ILogger (which I import/export through MEF)...How would I create an instance of ConsoleLogger whenever I wanted to? Also..Is this even possible?

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  • jQuery - Dynamically adding validation rule to multiple textboxes

    - by Justin
    Hey, I'm trying to add a validation rule to multiple textboxes dynamically. Here's the js: //validate form. $("#SubmitForm").validate(); $("input[id*=Hours]").rules("add", { number: true, messages: { number: "Please enter a valid Hours" } }); This applies the rule to the very first textbox on the page with "Hours" in the id but then it doesn't apply it to any of the other ones. Anyone know what's wrong here? Thanks, Justin

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  • multiple stateful iframes per page will overwrite JSESSIONID?

    - by Nikita
    Hello, Looking for someone to either confirm or refute my theory that deploying two iframes pointing to two different stateful pages on the same domain can lead to JSESSIONIDs being overwritten. Here's what I mean: Setup suppose you have two pages that require HttpSession state (session affinity) to function correctly - deployed at http://www.foo.com/page1 and http://www.foo.com/page2 assume www.foo.com is a single host running a Tomcat (6.0.20, fwiw) that uses JSESSIONID for session id's. suppose these pages are turned into two iframe widgets to be embedded on 3rd party sites: http://www.site.com/page1" / (and /page2 respectively) suppose there a 3rd party site that wishes to place both widgets on the same page at http://www.bar.com/foowidgets.html Can the following race condition occur? a new visitor goes to http://www.bar.com/foowidgets.html browser starts loading URLs in foowidgets.html including the two iframe 'src' URLs because browsers open multiple concurrent connections against the same host (afaik up to 6 in chrome/ff case) the browser happens to simultaneously issue requests for http://www.foo.com/page1 and http://www.foo.com/page2 The tomcat @ foo.com receives both requests at about the same time, calls getSession() for the first time (on two different threads) and lazily creates two HttpSessions and, thus, two JSESSIONIDs, with values $Page1 and $Page2. The requests also stuff data into respective sessions (that data will be required to process subsequent requests) assume that the browser first receives response to the page1 request. Browser sets cookie JSESSIONID=$Page1 for HOST www.foo.com next response to the page2 request is received and the browser overwrites cookie JSESSIONID for HOST www.foo.com with $Page2 user clicks on something in 'page1' iframe on foowidgets.html; browser issues 2nd request to http://www.foo.com/page1?action=doSomethingStateful. That request carries JSESSIONID=$Page2 (and not $Page1 - because cookie value was overwritten) when foo.com receives this request it looks up the wrong HttpSession instance (because JSESSIONID key is $Page2 and NOT $Page1). Foobar! Can the above happen? I think so, but would appreciate a confirmation. If the above is clearly possible, what are some solutions given that we'd like to support multiple iframes per page? We don't have a firm need for the iframes to share the same HttpSession, though that would be nice. In the event that the solution will still stipulate a separate HttpSession per iframe, it is - of course - mandatory that iframe 1 does not end up referencing httpSession state for iframe 2 instead of own. off top of my head I can think of: map page1 and page2 to different domains (ops overhead) use URL rewriting and never cookies (messes up analytics) anything else? thanks a lot, -nikita

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  • LINQDataSource - Query Multiple Tables?

    - by davemackey
    I have a database and I've created a DBML Linq-to-SQL file to represent this database. I've created a new aspx page and dropped a linqdatasource and a formview control onto it. When I configure the linqdatasource it gives me the choice only to select * from one table...but I want to pull from multiple tables. e.g. I have tables like simple_person, simple_address, simple_phone, and I want to pull from all of them. How can I accomplish this?

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  • wpf listview drag select multiple items

    - by Carlo
    Just wondering if anyone has any idea on how to do this. I want to let the user select multiple items by clicking and dragging the mouse (without letting the click go). Say the user clicks on item 1, then drags down to item 10; item 1 through 10 should get selected as if he clicked item 1, then shift + clicked on item 10. Let me know thanks!

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  • Rename multiple files in Unix

    - by john
    There are multiple files in a directory that begin with prefix fgh, for example: fghfilea fghfileb fghfilec I want to rename all of them to begin with prefix jkl. Is there a single command to do that instead of renaming each file individually?

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  • Use Delayed::Job to manage multiple job queues

    - by Alex
    I want to use Delayed::Job (or perhaps a more appropriate job queue to my problem) to dispatch jobs to multiple background daemons. I have several background daemons that carry out different responsibilities. Each one is interested in different jobs in the queue from the Rails app. Is this possible using Delayed::Job, or perhaps there is a different job queue that better fits this task?

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  • Multiple computers with a standard iPhone developer program

    - by Tiago
    I have enrolled on the standard iPhone Developer Program and I've successfully created a provisioning profile for my iMac. But I also have a MacBook Pro that I use to work while I'm traveling. But with the standard iPhone Developer Program there seems to be no way to have 2 computers to work, unless I spend time revoking and re-creating/re-validating certification authorities when switching machines. Am I right? Or is there some way to use the same CA across multiple machines?

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  • Multiple Columns as Primary keys

    - by rockbala
    CREATE TABLE Persons ( P_Id int NOT NULL, LastName varchar(255) NOT NULL, FirstName varchar(255), Address varchar(255), City varchar(255), CONSTRAINT pk_PersonID PRIMARY KEY (P_Id,LastName) ) The above example is taken from w3schools. From the above example, my understanding is that both P_Id, LastName together represents a Primary Key for the table Persons, correct ? Another question is why would some one want to use multiple columns as Primary keys instead of a single column ? How many such columns can be used in together as Primary key in a given table ? Thanks Balaji S

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  • Mysql: how to extract multiple text files from my mysql table

    - by Patrick
    hi, I need to extract data from my mysql database into multiple text files. I have a table with 4 columns: UserID, UserName, Tag, Score. I need to create a text file for each Tag, with the userID, the userName and score (ordered by score) i.e. Tag1.txt 234922 John 35 234294 David 205 392423 Patrick 21 Tag2.txt 234922 John 35 234294 David 205 392423 Patrick 21 and so on... Edited: Sample: http://dl.dropbox.com/u/72686/expertsTable.png thanks

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  • Silverlight handling multiple key press combinations.

    - by SilverDark
    I have a Silverlight application in which I catch certain key presses such as TAB or CTRL to perform some action. However, I want to be able to handle multiple keys pressed at the same time such as CTRL + R or something like that. Is there any way to do that in Silverlight, and if so, how? Thank you in advance.

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  • How to use Multiple Map activity in Android?

    - by Praveen Chandrasekaran
    Hi folks, I am using 2 map Activities. do i want to register multiple Map APi key for each? Now I am getting this exception: 06-16 16:59:25.048: ERROR/MapActivity(10008): Couldn't get connection factory client I googled about this exception. It concludes that must be a API Key Problem? Is that true? Why it happens? Thanks

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  • Emacs follow-mode with multiple splits

    - by Yktula
    My question is related to the following two: http://stackoverflow.com/questions/970292/emacs-multiple-columns-one-buffer http://stackoverflow.com/questions/2588706/vim-configuration-setting-up-autocomplete-and-columns I'm using MPage now in vim, and it works well even when I have more than two columns. How can I use follow-mode to mimic that behavior in Emacs, and have flowing code in more than two columns?

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  • Quartz job fires multiple times

    - by GustlyWind
    Hi, I have a building block which sets up a Quartz job to send out emails every morning. The job is fired three times every morning instead of once. We have a hosted instance of Blackboard, which I am told runs on three virtual servers. I am guessing this is what is causing the problem, as the building block was previously working fine on a single server installation. Does anyone have Quartz experience, or could suggest how one might prevent the job from firing multiple times? Thanks,

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  • Multiple Git repositories in one directory

    - by Jakob
    Hello, I would like to deploy a directory to multiple developers having different permissions. So this is one thing Git cannot do. What about creating two repositories in one directory and assigning them different file lists by excluding files managed by the other repository with the .gitignore file. Example: /www/project/.git for all files execpt in /www/project/css /www/project/css/.git - only files in this directory Has anyone tried this solution? Or are there any better ways to handle this issue? Regards, Jakob

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  • pip: dealing with multiple Python versions?

    - by David Wolever
    Is there any way to make pip play well with multiple versions of Python? For example, I want to use pip to explicitly install things to either my site 2.5 installation or my site 2.6 installation. For example, with easy_install, I use easy_install-2.{5,6}. And, yes — I know about virtualenv, and no — it's not a solution to this particular problem.

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  • Reuse nib's across multiple UIViewControllers

    - by colm
    I've created some custom UITableViewCells in a nib file and would like to use that across multiple UIViewControllers. Can anyone tell me the best practice way to do that? My limited knowledge around loading nibs seems to suggest that you have to specify a single owner class in Interface Builder. Thanks.

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  • Splitting jQuery into multiple files (for iPhone caching)

    - by Marko Ivanovski
    Hi, I was wondering if there is a way to split jQuery into multiple files, i.e. jQuery-1.4.2_part1.js jQuery-1.4.2_part2.js jQuery-1.4.2_part3.js ...and so on. The reason I want to do this is because the iPhone doesn't cache assets larger than 25kb and I really need jQuery to only be downloaded once. If you think there are other workarounds for this I am considering all options right now. Thanks, Marko

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  • select multiple columns using linq and sum them up

    - by Yustme
    Hi, How can i select multiple columns and calculate the total amount. For example, in my database i got a few fields which are named: 5hunderedBills, 2hunderedBills, 1hunderedBills, etc. And the value of those fields are for example: 5, 2, 3 And the sum would be: 5hunderedBills * 5 + 2hunderedBills * 2 + 1hunderedBills * 3 How can i do that with LINQ in one select statement?

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