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• iPhone Development: Get images from RSS feed

  - by Matthew Saeger

  I am using the NSXMLParser to get new RSS stories from a feed and am displaying them in a UITableView. However now I want to take ONLY the images, and display them in a UIScrollView/UIImageView (3 images side-by side). I am completely lost. I am using the following code to obtain 1 image from a URL. NSURL *theUrl1=[NSURL URLWithString:@"http://farm3.static.flickr.com/2586/4072164719_0fa5695f59.jpg"]; JImage *photoImage1=[[JImage alloc] init]; [photoImage1 setContentMode:UIViewContentModeScaleAspectFill]; [photoImage1 setFrame:CGRectMake(0, 0, 320, 170)]; [photoImage1 initWithImageAtURL:theUrl1]; [imageView1 addSubview:photoImage1]; [photoImage1 release]; This is all I have accomplished, and it works, for one image, and I have to specify the exact URL. What would you recommend I do to accomplish this?

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• Gravity Sort : Is this possible programatically?

  - by Bragaadeesh

  Hi, I've been thinking recently on using the Object Oriented design in the sorting algorithm. However I was not able to find a proper way to even come closer in making this sorting algorithm that does the sorting in O(n) time. Ok, here is what I've been thinking for a week. I have a set of input data. I will assign a mass to each of the input data (assume input data a type of Mass). I will be placing all my input data in the space all at same distance from earth. And I will make them free fall. According to gravitational law, the heaviest one hits the ground first. And the order in which they hit will give me the sorted data. This is funny in some way, but underneath I feel that this should be possible using the OO that I have learnt till date Is it really possible to make a sorting technique that uses gravitational pull like scenario or am I stupid/crazy?

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• Creating a list of most popular posts of the past week - Wordpress

  - by Gary Woods

  I have created a widget for my Wordpress platform that displays the most popular posts of the week. However, there is an issue with it. It counts the most popular posts from Monday, not the past 7 days. For instance, this means that on Tuesday, it will only include posts from Tuesday and Monday. Here is my widget code: <?php class PopularWidget extends WP_Widget { function PopularWidget(){ $widget_ops = array('description' => 'Displays Popular Posts'); $control_ops = array('width' => 400, 'height' => 300); parent::WP_Widget(false,$name='ET Popular Widget',$widget_ops,$control_ops); } /* Displays the Widget in the front-end */ function widget($args, $instance){ extract($args); $title = apply_filters('widget_title', empty($instance['title']) ? 'Popular This Week' : $instance['title']); $postsNum = empty($instance['postsNum']) ? '' : $instance['postsNum']; $show_thisweek = isset($instance['thisweek']) ? (bool) $instance['thisweek'] : false; echo $before_widget; if ( $title ) echo $before_title . $title . $after_title; ?> <?php $additional_query = $show_thisweek ? '&year=' . date('Y') . '&w=' . date('W') : ''; query_posts( 'post_type=post&posts_per_page='.$postsNum.'&orderby=comment_count&order=DESC' . $additional_query ); ?> <div class="widget-aligned"> <h3 class="box-title">Popular Articles</h3> <div class="blog-entry"> <ol> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <li><h4 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h4></li> <?php endwhile; endif; wp_reset_query(); ?> </ol> </div> </div> <!-- end widget-aligned --> <div style="clear:both;"></div> <?php echo $after_widget; } /*Saves the settings. */ function update($new_instance, $old_instance){ $instance = $old_instance; $instance['title'] = stripslashes($new_instance['title']); $instance['postsNum'] = stripslashes($new_instance['postsNum']); $instance['thisweek'] = 0; if ( isset($new_instance['thisweek']) ) $instance['thisweek'] = 1; return $instance; } /*Creates the form for the widget in the back-end. */ function form($instance){ //Defaults $instance = wp_parse_args( (array) $instance, array('title'=>'Popular Posts', 'postsNum'=>'','thisweek'=>false) ); $title = htmlspecialchars($instance['title']); $postsNum = htmlspecialchars($instance['postsNum']); # Title echo '<p><label for="' . $this->get_field_id('title') . '">' . 'Title:' . '</label><input class="widefat" id="' . $this->get_field_id('title') . '" name="' . $this->get_field_name('title') . '" type="text" value="' . $title . '" /></p>'; # Number of posts echo '<p><label for="' . $this->get_field_id('postsNum') . '">' . 'Number of posts:' . '</label><input class="widefat" id="' . $this->get_field_id('postsNum') . '" name="' . $this->get_field_name('postsNum') . '" type="text" value="' . $postsNum . '" /></p>'; ?> <input class="checkbox" type="checkbox" <?php checked($instance['thisweek'], 1) ?> id="<?php echo $this->get_field_id('thisweek'); ?>" name="<?php echo $this->get_field_name('thisweek'); ?>" /> <label for="<?php echo $this->get_field_id('thisweek'); ?>"><?php esc_html_e('Popular this week','Aggregate'); ?></label> <?php } }// end AboutMeWidget class function PopularWidgetInit() { register_widget('PopularWidget'); } add_action('widgets_init', 'PopularWidgetInit'); ?> How can I change this script so that it will count the past 7 days rather than posts from last Monday?

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• How much of Grails GORM to test?

  - by Lloyd Meinholz

  Is there a "best practice" or defacto standard with how much of the GORM functionality one should test in the unit/functional tests? My take is that one should probably do most of the domain testing as functional tests so that you get the full grails environment. But what do you test? Inserts, updates, deletes? Do you test constraints even though they were probably more thoroughly tested by the grails release? Or do you just assume that GORM does what it is supposed to do and move to other parts of the application?

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• Jquery making div fadeout with timer

  - by nharry

  Looking to make a div fadeout after 10 seconds. Tried various things but can't get the timer working. This is the code: $('#deletesuccess').show(); Edit: This is the full code: function refreshTable() { //timestamp to get around ie caching issue var tsTimeStamp= new Date().getTime(); $('#deletesuccess').show().fadeOut(); $.get('table.php', {action: "get", time: tsTimeStamp}, function(data){ $('#customertable').html(data).fadeIn(); }); return true; } I need to show the div and then hide it after x amount of seconds.

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• Installing bitarray in Python 2.6 on Windows

  - by John Fouhy

  I would like to install bitarray in Windows running python 2.6. I have mingw32 installed, and I have C:\Python26\Lib\distutils\distutils.cfg set to: [build] compiler = mingw32 If I type, in a cmd.exe window: C:\Documents and Settings\john\My Documents\bitarray-0.3.5>python setup.py install I get: [normal python messages skipped] C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -IC:\Python26\include -IC:\Python26\PC -c bitarray/_bitarray.c -o build\temp.win32-2.6\Release\bitarray\_bitarray.o bitarray/_bitarray.c:2197: error: initializer element is not constant bitarray/_bitarray.c:2197: error: (near initialization for `BitarrayIter_Type.tp_getattro') bitarray/_bitarray.c:2206: error: initializer element is not constant bitarray/_bitarray.c:2206: error: (near initialization for `BitarrayIter_Type.tp_iter') bitarray/_bitarray.c:2232: error: initializer element is not constant bitarray/_bitarray.c:2232: error: (near initialization for `Bitarraytype.tp_getattro') bitarray/_bitarray.c:2253: error: initializer element is not constant bitarray/_bitarray.c:2253: error: (near initialization for `Bitarraytype.tp_alloc') bitarray/_bitarray.c:2255: error: initializer element is not constant bitarray/_bitarray.c:2255: error: (near initialization for `Bitarraytype.tp_free') error: command 'gcc' failed with exit status 1 Can anyone help?

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• How can I pause a BackgroundWorker? Or something similar...

  - by juan

  I was using a BackgroundWorker to download some web sites by calling WebClient.DownloadString inside a loop. I wanted the option for the user to cancel in the middle of downloading stuff, so I called CancelAsync whenever I found that CancellationPending was on in the middle of the loop. But now I noticed that the function DownloadString kinda freezes sometimes, so I decided to use DownloadStringAsync instead (all this inside the other thread created with BackgroundWorker). An since and don't want to rewrite my whole code by having to exit the loop and the function after calling DownloadStringAsync, I made a while loop right after calling it that does nothing but checks for a variable bool Stop that I turn true either when the DownloadStringCompleted event handler is called or when the user request to cancel the operation. Now, the weird thing is that it works fine on the debug version, but on the release one, the program freezes in the while loop like if it were the main thread.

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• iPhone: Core Data: Updating a pre-filled database in future app versions.

  - by Cuzog

  I am creating an app with a database of information that needs to be pre-filled. This data will change in future versions. In the same database, I also need to store user editable information since that user edited data directly relates to the pre-filled data. My question is, if I'm pre-filling the database by creating a duplicate data model in a second app and copying over the core data file before release, how would I handle updates to that data in future versions of the app without destroying the user's existing data? Do the core data migration methods handle this, or must I write custom methods to programatically handle the merge at first app launch?

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• C++ Win32 Unhandled Exception Handler

  - by uray

  currently I used SetUnhandledExceptionFilter() to provide callback to get information when an unhandled exception was occurred, that callback will provides me with EXCEPTION_RECORD which provides ExceptionAddress. [1]what is actually ExceptionAddress is? does it the address of function / code that gives exception, or the memory address that some function tried to access? [2]is there any better mechanism that could give me better information when unhandled exception occured? (I can't use debug mode or add any code that affect runtime performance, since crash is rare and only on release build when code run as fast as possible) [3]is there any way for me to get several callstack address when unhandled exception occured. [4]suppose ExceptionAddress has address A, and I have DLL X loaded and executed at base address A-x, and some other DLL Y at A+y, is it good to assume that crash was PROBABLY caused by code on DLL X?

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• UIImage from NSDocumentDirectory leaking memory

  - by Emil

  Hey. I currently have this code: UIImage *image = [[UIImage alloc] initWithContentsOfFile:[imagesPath stringByAppendingPathComponent:[NSString stringWithFormat:@"/%@.png", [postsArrayID objectAtIndex:indexPath.row]]]]; It's loading in an image to set in a UITableViewCell. This obviously leaks a lot of memory (I do release it, two lines down after setting the cells image to be that image), and I'm not sure if it caches the image at all. Is there another way, that doesen't leak so much, I can use to load in images multiple times, like in a tableView, from the Documents-directory of my app? Thanks.

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• modalViewController present when app opens

  - by Sam Jarman

  Hey im trying to display a modal view controller as soon as my tab bar controller app opens. There is something wrong with the code below, and im 99% sure its the code for this. what do i put for the thing im calling it on? [self presentModalViewController:promt animated:YES]; - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after app launch. //Displays the password prompt modally PasswordPromViewController *promt = [[PasswordPromViewController alloc] initWithNibName:@"PasswordPromViewController" bundle:nil]; promt.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:promt animated:YES]; [promt release]; return YES; } any ideas would be helful! Cheers

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• IIS7 + ASP.NET MVC Client Caching Headers Not Working

  - by Tobin Harris

  Hey folks I've deployed an ASP.NET MVC app on IIS7 and Windows Server 2008. I've read posts on here, and around the web, but can't get the darn client-side caching to work. I'm trying to cache everything in the /Content folder. So far I've select that folder in IIS manager, and set the appropriate HTTP Response Headers (under Common Headers). I've also checked the web.config file in the /Content folder and the values there are being set. All resources in /Content come back with this (from FireBug): Cache-Control no-cache, no-store, must-revalidate Pragma no-cache Content-Type image/png Expires -1 Last-Modified Sun, 11 Oct 2009 19:01:40 GMT Accept-Ranges bytes Etag "f318d643a54aca1:0" Server Microsoft-IIS/7.0 X-Powered-By ASP.NET Date Sun, 11 Oct 2009 20:40:01 GMT Content-Length 620 Note the Cache-Control and Expires values for this static image being requested. The site is currently compiled in Debug (this will change), but surely that wouldn't make a difference? Obviously I'm overlooking something, any ideas would be appreciated. Thanks

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• Cleanest way to tell if 3 times are within half an hour of each other

  - by niggles

  I have 3 date / time input boxes on a form and the user cannot select any times within half an hour of each other. I've converted all values to epoch format using a Javascript implementation of strtotime, but not sure how to recursively check that any of the times are actually half an hour apart. I can hand code all checks, but it would be cleaner to write a recursive function (especially if there were theoretically more than 3 time slots). Did some Google research but no luck. Any suggestions on implementing this in Javascript or Jquery. Thanks.

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• If the UIApplicationMain() never returns then when does the autorelease pool gets released?

  - by sid

  For code: int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); [pool release]; return retVal; } Apple's doc clearly specifies: Return Value: Even though an integer return type is specified, this function never returns. When users terminate an iPhone application by pressing the Home button, the application immediately exits by calling the exit system function with an argument of zero. Secondly, in int UIApplicationMain ( int argc, char *argv[], NSString *principalClassName, NSString *delegateClassName ); how can we access the argv from our UIApplication subclass?

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• Screen scrape a web page that uses javaScript and frames

  - by Mello

  Hi, I want to scrape data from www.marktplaats.nl . I want to analyze the scraped description, price, date and views in Excel/Access. I tried to scrape data with Ruby (nokogiri, scrapi) but nothing worked. (on other sites it worked well) The main problem is that for example selectorgadget and the add-on firebug (Firefox) don’t find any css I can use to scrape the page. On other sites I can extract the css with selectorgadget or firebug and use it with nokogiri or scrapi. Due to lack of experience it is difficult to identify the problem and therefore searching for a solution isn’t easy. Can you tell me where to start solving this problem and where I maybe can find more info about a similar scraping process? Thanks in advance!

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• Are there such things as summer jobs for teenage programmers?

  - by Gbps

  I've taken programming as a hobby, studying it since I was 10 or so. 7 years to date, I've become progressivly good at C++, PHP, C#, Assembly, Lua, and the web languages such as HTML and CSS. Though I've never taken a class, I've been able to complete most, if not all of the questions from different "Programmer Interview Questions" articles and have participated in some small scale projects in the past. Summer starting yesterday for me, I've been thinking about how to keep busy while maybe earning some money along the way. Now, some kids mow lawns, others get fast food jobs, but what about programming jobs? Is there even such a thing?

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• A question about some code from TBB book, Thanks.

  - by Jackie

  I am reading the book: Intel Threading Building Blocks. I often have difficulties understanding them. For example,the following code is from the book(page 112): Node* AllocateNode() { Node* n; FreeListMutexType::scoped_lock lock; lock.acquire(FreeListMutex); n=FreeList; if(n) Freelist=n->next; lock.release(); if(!n) n=new Node(); return n; } There is other introduction regarding this code. I can not understand it. What does it means? How can I understand this book better? Thanks.

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• WPF TextBox Custom Dictionary Support

  - by Tom Allen

  Has anyone found a workaround yet for getting custom dictionary support working for the built in spellchecking on WPF TextBoxes/RichTextBoxes? We've been probing the spelling stuff with reflector hoping to find where the dictionary entries are coming from, but it's looking very much like it's going to be a COM object.... I know it's not currently supported and that Microsoft were looking into supporting it in a future release, but that was quite a while ago and I can't seem to find any recent news about it. Clutching at staws, I've posted a suggestion up on Connect: https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=470233

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• Is there an online user agent database?

  - by Gary Richardson

  How do you parse your user agent strings? I'm looking to get: Browser Browser Version OS OS Version from a user agent string. My app is written in perl and was previously using HTTP::BrowserDetect. It's a bit dated and is no longer maintained. I'm in no way tied to using perl for the actual lookup. I've come to the conclusion that automagic parsing is a lost cause. I was thinking of writing a crud type app to show me a list of unclassified UA's and manually keep them up to date. Does such an resource already exist that I can tap into? It would be awesome if I could make an HTTP call to look up the user agent info. Thanks!

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• Unable to use background-position: center for VBox in flex

  - by Zeeshan Rang

  Hi I am trying to use css to have a background in a VBox which is positioned to the top of the container. my css style looks like below: <mx:Style> .agendaDateVBoxStyle { vertical-gap:0; corner-radius: 10; border-style:solid; border-color: #7191ba; background-color: #000000; background-image: 'assets/calendar/images/agenda-date-bg.png'; background-repeat:no-repeat; background-position:top; } Can someone help me with the situation. Regards Zee

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• Connection string in app.config in a class library

  - by Copeleto

  I am creating solution and inside I have three projects: A WCF Service Library Project A DataAccess Project (Class Library) A Web site for hosting WCF service The implementation of the service is on the project # 1, but in order to access the DataBase I use a second project that implements the data access using a class library project. That problem is in order to get data access I need to configure a connection string, but that connection string must be configurable in a production environment, I meant in production I am going to deploy the site, which is a very simple project that contains only a reference WCF Service Library Project then a guy from database department will configure the connection string. In development I have an app.config on the data access project but when I do the release that app.config is embedded on the dll. Any ideas how can we achieve our purpose

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• Unbelievable: Cannot cast from class X to its super class

  - by Phuong Nguyen de ManCity fan

  I'm encountering a very weird problem with Spring (3.0.1.RELEASE), TestNG (5.11) and Maven Surefire (2.5). I have a test class that extends a Spring helper class for testNG so that test context can be loaded from an xml file (that contains some bean definitions). My project was imported into eclipse using m2eclipse (using Import Maven Project) The class run fine in Eclipse TestNG runner. However, it throws this exception with Maven Surefire Caused by: java.lang.ClassCastException: com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl cannot be cast to javax.xml.parsers.DocumentBuilderFactory at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:123) at org.springframework.beans.factory.xml.DefaultDocumentLoader.createDocumentBuilderFactory(DefaultDocumentLoader.java:89) at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:70) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388) I have eliminated all involved dependencies in my pom so that the two classes com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl and javax.xml.parsers.DocumentBuilderFactory are coming from JRE only (the rt.jar). So, it looks so unbelievable to me. I wonder if there is any mechanism in loading class that can explain for this behavior? Thanks.

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• Hosting a complex online service

  - by jonathanconway

  I have an idea for a web-based service. The implementation is very complex. There will be very few users, and the traffice will be fairly low, but the server-side code could require a lot of resources. Ideally I'd need to have as much control over the servers as possible. How should I arrange hosting for this, when it comes time to release it to the public? Should I do the hosting myself, from my own servers? Trouble is, since I'm not quite an expert on .NET hosting, it might take time to learn and I might make big mistakes. The trouble with using a hosting company is, they might steal my idea, or else, it might cost a lot. Since I'm an un-funded startup I don't have a lot of money to throw at this.

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• ASP User Control Issue

  - by Steven

  I am attempting to construct my own date picker using code from several sources. Why won't the calendar hide when visible? myDate.ascx <%@ Control Language="vb" AutoEventWireup="false" CodeBehind="myDate.ascx.vb" Inherits="Website.myDate" %> <asp:TextBox ID="dateText" runat="server" > </asp:TextBox> <asp:Button ID="dateBtn" runat="server" UseSubmitBehavior="false" Text="x" /> <asp:Calendar ID="dateCal" runat="server" ></asp:Calendar> myDate.ascx.vb Partial Public Class myDate Inherits System.Web.UI.UserControl Protected Sub dateCal_SelectionChanged(ByVal sender As Object, ByVal e As EventArgs) Handles dateCal.SelectionChanged dateText.Text = dateCal.SelectedDate ' Update text box' dateCal.Visible = False ' Hide calendar' End Sub Protected Sub dateCal_VisibleMonthChanged(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.MonthChangedEventArgs) Handles dateCal.VisibleMonthChanged dateCal.Visible = True ' For some reason, changing the month hides the calendar (so show it)' End Sub Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load dateCal.Visible = False ' Hide calendar on load' End Sub Protected Sub dateBtn_Click(ByVal sender As Object, ByVal e As EventArgs) Handles dateBtn.Click dateCal.Visible = Not dateCal.Visible ' On button press, toggle visibility' End Sub End Class

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• #1366 - Incorrect integer value:MYsql

  - by rajanikant

  hi every one i have a problem in mysql my table is CREATE TABLE IF NOT EXISTS `contactform` ( `contact_id` int(11) NOT NULL AUTO_INCREMENT, `first_name` varchar(50) NOT NULL, `addition` varchar(50) NOT NULL, `surname` varchar(50) NOT NULL, `Address` varchar(200) NOT NULL, `postalcode` varchar(20) NOT NULL, `city` varchar(50) NOT NULL, `phone` varchar(20) NOT NULL, `emailaddress` varchar(30) NOT NULL, `dob` varchar(50) NOT NULL, `howtoknow` varchar(50) NOT NULL, `othersource` varchar(50) NOT NULL, `orientationsession` varchar(20) NOT NULL, `othersession` varchar(20) NOT NULL, `organisation` int(11) NOT NULL, `newsletter` int(2) NOT NULL, `iscomplete` int(11) NOT NULL, `registrationdate` date NOT NULL, PRIMARY KEY (`contact_id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=39 ; mysql>insert into contactform values('','abhi','sir','shukla','vbxcvb','342342','asdfasd','234234234','[email protected]','1999/5/16','via vrienden of familie','','19','20','6','1','1','2010-03-29') i get following error. #1366 - Incorrect integer value: '' for column 'contact_id' at row 1 this query work fine on my local machine but give error on server

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