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  • SQL Standard Regarding Left Outer Join and Where Conditions

    - by Ryan
    I am getting different results based on a filter condition in a query based on where I place the filter condition. My questions are: Is there a technical difference between these queries? Is there anything in the SQL standard that explains the different resultsets in the queries? Given the simplified scenario: --Table: Parent Columns: ID, Name, Description --Table: Child Columns: ID, ParentID, Name, Description --Query 1 SELECT p.ID, p.Name, p.Description, c.ID, c.Name, c.Description FROM Parent p LEFT OUTER JOIN Child c ON (p.ID = c.ParentID) WHERE c.ID IS NULL OR c.Description = 'FilterCondition' --Query 2 SELECT p.ID, p.Name, p.Description, c.ID, c.Name, c.Description FROM Parent p LEFT OUTER JOIN Child c ON (p.ID = c.ParentID AND c.Description = 'FilterCondition') I assumed the queries would return the same resultsets and I was surprised when they didn't. I am using MS SQL2005 and in the actual queries, query 1 returned ~700 rows and query 2 returned ~1100 rows and I couldn't detect a pattern on which rows were returned and which rows were excluded. There were still many rows in query 1 with child rows with data and NULL data. I prefer the style of query 2 (and I think it is more optimal), but I thought the queries would return the same results.

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  • Profile not loaded correctly (Cannot access registry)

    - by xaav
    Every so often, I log on and get the Following Message: User profile was not loaded correctly. You have been logged on with a temporary profile. Changes you make to this profile will be lost when you log off. Please see the event log for details or contact your administrator This almost always happens when somebody else has been on the computer for a while, and then I log on. This never used to happen, but now it happens pretty often. My profile is not permanently corrupted, all I have to do is restart my computer, but this annoys me, and I would like to fix it. I was curios about the reason of this cause, so I looked into the Event Log, and found the root of the problem was the ntuser.dat file in the profile that I was logging on to was locked at logon time. This resulted in the current users registry not being loaded, resulting in failure to load the profile. I just found a microsoft article that mentions this exact issue: http://support.microsoft.com/kb/960464/ The problem is that I do not want to delete this profile; and this issue does not come up every time that I log on, only when somebody else has been on a long time before me. What could be locking this file? Is there any way to get a process list without logging on so that I can identify which process has the file locked? Any other suggestions?

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  • CakePHP 2.0: how to access properties of the parent object?

    - by PaulJ
    I just started learning CakePHP 2.0 a few days ago, and there's one thing that is leaving me stumped: say I have an User model and a Posts model: class User extends AppModel { public $name = "User"; public $hasMany=array( 'Post' => array( 'className' => 'Post', 'foreignKey' => 'author_id' ) ); } class Post extends AppModel { public $name = 'Post'; public $belongsTo = array( 'className' = 'User', 'foreignKey' = 'author_id', ); } (Where "author_id" is the foreign key in the posts table that references the Users table's primary key). And now, in the PostsController, I want to access the properties of the user that owns the current post (to show his display name, for example). What would be the proper syntax? I tried: $this->Post->User->find('first', array('conditions' => array('User.id' => "$usuario"))) But it didn't work (I guess it's because the User is the parent of the Post object, not its child). Or should CakePHP load everything automatically, once you've declared the $hasMany and $belongsTo relationships?

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  • Difference between "bit-number" in filesystem and that in OS (like 32,64 bit)?

    - by learner
    I encountered 2 terms ,"FAT32", a file system and "Windows Vista 32 bit". I found that the meaning of a 32 bit OS is that that the OS deals with data in chunks of minimum size 32 bits. I don't quite understand the depth of that, but I figure ,every file in that system with that OS should have a minimum size of 32 bits. I also read that these 32 bits are used to hold data of files' location(reference) and details. Which of it is it? I have also read that 4 GB of RAM is all that is needed at the most if you're on a 32 bit OS. But I don't understand why. If there are 32 bits to hold info about files and their locations,there can be 2^32 possible combinations of it. But I have found in many places,2^32 is divided by 1024 thrice to get 4GB. Why? Did that 2^32 become equal to 2^32 bytes? And about filesystems I read a similar explanation for what 32 means in FAT32. It is supposed to mean that 32 bits are used to number file system block. Now how is different from the number before the OS?

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  • How to copy files in Visual C++?

    - by karikari
    I am using Visual C++. How to copy the content of this file to another file? UINT32 writeToLog(wstring log) { wfstream file1 (LOG_FILE_NAME, ios_base::out); file1 << log; file1.close(); // want to copy file1 to file2 return 0; }

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  • Will this only allow certain extensions?

    - by Dr Hydralisk
    I found this snippet that says will only allow certain file types. Will it work and could someone bypass it to upload what ever file type they want? And could someone explain the substr part, i don't get how it works.. <?php function CheckExt($filename, $ext) { $name = strtolower($filename); if(substr($name, strlen($name) -3, 3) == $ext) return true; else return false; } ?>

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  • Planning a programming project by example (C# or C++)

    - by Lunan
    I am in the last year of undergraduate degree and i am stumped by the lack of example in c++ and c# large project in my university. All the mini project and assignment are based on text based database, which is so inefficient, and console display and command, which is frustrating. I want to develop a complete prototype of corporate software which deals in Inventory, Sales, Marketing, etc. Everything you would usually find in SAP. I am grateful if any of you could direct me to a books or article or sample program. Some of the question are : How to plan for this kind of programming? should i use the concept of 1 object(such as inventory) have its own process and program and have an integrator sit for all the program, or should i integrate it in 1 big program? How to build and address a database? i have little bit knowledge in database and i know SQL but i never address database in a program before. Database are table, and how do you suppose to represent a table in a OOP way? For development type, which is better PHP and C++ or C# and ASP.NET? I am planning to use Web Interface to set form and information, but using a background program to handle the compute. .NET is very much integrated and coding should be much faster, but i really wonder about performance if compared to PHP and C++ package thank you for the info

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  • Linking win32 dll in Qt

    - by kambamsu
    Hi, I want to reference a win32 dll from my Qt application. I've added the dll location in the .pro file at "LIBS+=" . Once that is done, by right, i should be able to include the .h file inside the dll from my application. But i'm unable to do so. I'm testing with the dll here: http://www.flipcode.com/archives/Creating_And_Using_DLLs.shtml Any help would be appreciated! Thanks

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  • Best tutorial to learn SSIS

    - by Nabin
    Hi, Which book is best to learn SSIS. Actually in my project we need to take onput from CVS file and after processing the data in SQL server 2008 we have export it back to excel file. ASP.NET is used as UI for this. Thanks, Nabin

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  • foreach loop is not working on opened pop up

    - by Rozer
    For each loop is not working in opened popup while the same collection i can see when I write it on page <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>my cart</title> </head> <body> <% ArrayList cart=(ArrayList)session.getAttribute("Cart"); out.println(cart); //this line is working %> <table> <tr bgcolor="#EAEAFF"> <td><b>Product ID</b></td> </tr> <c:forEach items="${cart}" var="current"> <tr> <td><c:out value="${current}"/></td> </tr> </c:forEach> </table> </body> </html>

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  • add android support library v4 to intellij ide

    - by user1233587
    i am trying to use viewpager from android support library v4 in intelli j currently i have android sdk 4.1 I copied android-support-v4.jar to my intellij android project under 'libs' in the project settings of intellij I webt to "Modules" = "MyModuleName" = dependencies tab, and add the android-support-v4.jar, by navigating the path to the libs/ folder under my own project I checked the 'export' besides this newly added jar file but i still can't use viewpager in my application i get a crash msg like java.lang.RuntimeException: Unable to start activity ComponentInfo{com.xxxx/com.xxxx.MyActivity}: android.view.InflateException: Binary XML file line #13: Error inflating class android.support.v4.view.ViewPager

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  • Where is my software installed in Linux?

    - by David
    I use whereis matlab and find: /usr/local/bin/matlab , which is a very long bash file. How can I find where matlab is installed, I mean, its installed folder. EDIT: I used the following method: open matlab and use edit svds.m to open the svds.m file and the editor shows the folder:)

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  • Overinclusion of libraries C++

    - by wyatt
    I'm reading about how to put a makefile together, but no-one seems to mention what to do if your files require different sets of libraries, they all seem to use the same set of libraries for each file. Since it seems unlikely that every single file has the same libraries, I take it the list they use must amalgamate all of the libraries required across the project. I just wanted to know if there's any downside to including too many libraries, or if the compiler works out which ones are needed and ignores the rest? Thanks

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  • Specified argument was out of the range of valid values. Parameter name: utcDate

    - by Rob
    Our logs show hundreds of these errors after our deployment if users are on the site. Anyone know what this means and how to fix it? Notes: We are using msdeploy, IIS 6 I recently noticed that our web server's time is about 10 minutes behind the real time, I think that may have something to do with it. If I log into our site, seems like any file that depends on a WebResource or ScriptResource type file doesn't look right. Seems to fix itself after an IIS reset

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  • Cannot add folders and files to Windows Installer package

    - by RingoShamra
    I' m using Visual Studio to create windows installer package, i can't add the folders and data files needed for the application. I create the folders needed for the application in the 'application folder'(under 'File System on Target Machine'), then add files into the appropriate folders, and when i install the application and go to the installation folder there are no folders...there is only the application exe file, hm...

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  • Virtual folder for multiple sites

    - by Cups
    I am creating a very simple flat file CMS for small (multilingual) websites. The little file writing that goes on is handled by 4 scripts in a publicly available folder in each site named /edit. Given that I have 2 websites now working on that simple system: websiteA/index.php (etc) websiteA/edit/ websiteB/index.php (etc) websiteB/edit/ What is the best way of making that /edit folder "virtual" in order that these and each subsequent website owner can login to their view of /edit and yet the code only exists in one place. I do not want the website owners to have to login from a central website, but from their own /edit directory. I have already read about different solutions seemingly using the <Directory> directive in my httpd.conf declaration for each website, and also using straight mod_rewrite but admit to now becoming confused about some of the terminology. Each website has its own config file which contains path settings and so on. What in your opinion is the best way to handle this? EDIT In light of a reply, I suppose that given a virtual host directive such as this: <VirtualHost 00.00.00.00:80> DocumentRoot /var/www/html/websitea.com ServerName www.websitea.com ServerAlias websitea.com DirectoryIndex index.htm index.php CustomLog logs/websitea combined </VirtualHost> Is it possible to create an alias inside that directive for the folder websitea.com/edit ?

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  • CSS: position:absolute inside position:relative, but not affecting parent?

    - by JP
    <style> #special p { display:none; } #special:hover p { display:block; } </style> <table> <tr> <td style="width:200px">Things</td> <td style="position:relative; width:220px"> <div style="position:absolute;right:0" id="special"> <img id="shows" /> <p>Variable width upto, say 600px (Will be hidden until this td is :hovered</p> </div> </td> </tr> </table> Can I make this work? Ie, can I make the #special p expand over the top of 'Things'? As I currently have it set up #special won't ever grow outside the 220px wide td. Any ideas?

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  • Select hidden input from within next td [jQuery]

    - by Fverswijver
    I have a table layed out like this: <td> somename </td> <td class="hoverable value" > somevalue </td> <td class="changed"> </td> <td class="original value"> <input type="hidden" value="somevalue" /> </td> And what I'm trying to do is, I hover over the hoverable td which turns it into a textbox. Once I hover out I want to check the hidden field for it's original value and put an image in changed if the 2 are different from each other. I already have this: $(document).ready( function() { var newHTML = ''; $('table td.hoverable').hover( function () { var oldHTML = $(this).html().trim(); $(this).html('<input type=\'text\' value=\'' + oldHTML + '\' size=\'' + ((oldHTML).length + 2) +'\' />'); }, function() { newHTML = $('input', this).val(); var oldHTML = $(this).next('td.original').children('hidden').val(); if(newHTML != oldHTML) { $(this).next('td.changed').html('Changed'); } $(this).html(newHTML); }) }); but it doesn't work. What fails apparently is grabbing the value of the hidden field, and I've tried selecting it in several different ways but just can't get to it. Any ideas or tips are gratefully appreciated ;)

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