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  • How to lock a table for inserting in sql?

    - by Nandini
    hi, i have a web application in which i have a page named 'Data'.Many people will try to insert data into the table at a given time.So the reference no other than the primary key will get duplicated which should not be permitted.For inserting the data into the DB table, i am using a stored procedure in SQL.In my vb.net web application, i am using Business layer with enterprise library for calling the stored procedure.Now i want to lock the table for inserting so that when multiple user inserts, there wont be any complication.How can i do this?Please advice Regards

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  • Calculated group-by fields in MongoDB

    - by Navin Viswanath
    For this example from the MongoDB documentation, how do I write the query using MongoTemplate? db.sales.aggregate( [ { $group : { _id : { month: { $month: "$date" }, day: { $dayOfMonth: "$date" }, year: { $year: "$date" } }, totalPrice: { $sum: { $multiply: [ "$price", "$quantity" ] } }, averageQuantity: { $avg: "$quantity" }, count: { $sum: 1 } } } ] ) Or in general, how do I group by a calculated field?

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  • WPF: How to properly override the methods when creating custom control

    - by EV
    Hi, I am creating a custom control Toolbox that is derived from ItemsControl. This toolbox is supposed to be filled with icons coming from the database. The definition looks like this: public class Toolbox : ItemsControl { protected override DependencyObject GetContainerForItemOverride() { return new ToolboxItem(); } protected override bool IsItemItsOwnContainerOverride(object item) { return (item is ToolboxItem); } } Toolboxitem is derived from ContentControl. public class ToolboxItem : ContentControl { static ToolboxItem() { FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(typeof(ToolboxItem), new FrameworkPropertyMetadata(typeof(ToolboxItem))); } } Since the number of icons stored in a database is not known I want to use the data template: <DataTemplate x:Key="ToolBoxTemplate"> <StackPanel> <Image Source="{Binding Path=url}" /> </StackPanel> </DataTemplate> Then I want the Toolbox to use the template. <Toolbox x:Name="NewLibrary" ItemsSource="{Binding}" ItemTemplate="ToolBoxtemplate"> </Toolbox> I'm using ADO.NET entity framework to connect to a database. The code behind: SystemicsAnalystDBEntities db = new SystemicsAnalystDBEntities(); private void Window_Loaded(object sender, RoutedEventArgs e) { NewLibrary.ItemsSource = from c in db.Components select c; } However, there is a problem. When the code is executed, it displays the object from the database (as the ItemSource property is set to the object from the database) and not the images. It does not use the template. When I use the static images source it works in the right way I found out that I need to override the PrepareContainerForItemOverride method.But I don't know how to add the template to it. Thanks a lot for any comments. Additional Information Here is the ControlTemplate for ToolboxItem: <ControlTemplate TargetType="{x:Type s:ToolboxItem}"> <Grid> <Rectangle Name="Border" StrokeThickness="1" StrokeDashArray="2" Fill="Transparent" SnapsToDevicePixels="true" /> <ContentPresenter Content="{TemplateBinding ContentControl.Content}" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" /> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="true"> <Setter TargetName="Border" Property="Stroke" Value="Gray" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate>

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  • ahow can I resolve Django Error: str' object has no attribute 'autoescape'?

    - by Angelbit
    Hi have tried to create a inclusion tag on Django but don't work and return str' object has no attribute 'autoescape' this is the code of custom tag: from django import template from quotes.models import Quotes register = template.Library() def show_quote(): quote = Quotes.objects.values('quote', 'author').get(id=0) return {'quote': quote['quote']} register.inclusion_tag('quotes.html')(show_quote) EDIT: Quote class from django.db import models class Quotes(models.Model): quote = models.CharField(max_length=255) author = models.CharField(max_length=100) class Meta: db_table = 'quotes' quotes.html <blockquote id="quotes">{{ quote }}</blockquote>

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  • users in a domain with NO login scripts.

    - by robd
    I'm trying to write an LDAP query for find all users in a domain with NO login scripts. The following works for users with a login script = db.bat: (&(objectCategory=user)(ScriptPath=DA.BAT)) However, what i thought will be the obvious logic for a Null ScriptPath field returns no values: (&(objectCategory=user)(ScriptPath="")) I'll appreciate any assistance. Robd

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  • HTML Encoding with ASP.NET

    - by Corin
    I am currently html encoding all user entered text before inserting/updating a db table record. The problem is that on any subsequent updates, the previously encoded string is reencoded. This endless loop is starting to eat up alot of column space in my tables. I am using parameterized queries for all sql statements but am wondering would it be safe to just let the .NET Framework handle this part without the HTML Encoding?

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  • Oracle join query

    - by Jasim
    There are three tables in my db ITEM_MASTER, PRICE_MASTER, COMP_MASTER ITEM_MASTER STORE_CODE ITEM_CODE ITEM_DESC 011 914004 desccc PRICE_MASTER STORE_CODE ITEM_CODE COMP_CODE 011 914004 01 011 914004 02 011 914004 03 011 914004 04 COMP_MASTER COMP_CODE COMP_DESC STORE_CODE 01 comp1 011 02 comp2 011 03 comp3 011 04 comp4 011 I want to get all these for an ITEM_CODE in single query STORE_CODE ITEM_CODE ITEM_DESC COMP_DESC1 COMP_DESC2 COMP_DESC3 COMP_DESC4 011 914004 desccc comp1 comp2 comp3 comp4 How can i write a oracle SQL query for this??

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  • Database connection via Hibernate in servlets

    - by blackliteon
    What is the best place in servlet for Hibernate code that returns HibernateSessionFactory ? I saw many examples: ones put db connection in service methods. Others - use smth like HibernateUtil (Singleton) that returns HibernateSessionFactory. I don't know is it safe to use HibernateUtil in multithreaded Servlets ?

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  • Codeigniter not returning me to upload form after image upload.

    - by Drew
    I'm still very new to codeigniter. The issue i'm having is that the file uploads fine and it writes to the database without issue but it just doesn't return me to the upload form. Instead it stays in the do_upload and doesn't display anything. Even more bizarrely there is some source code behind the scenes. Can someone tell my what it is i'm doing wrong because I want to be returning to my upload form after submission. Thanks in advance. Below is my code: Controller: function do_upload() { if($this->Upload_model->do_upload()) { $this->load->view('home/upload_form'); }else{ $this->load->view('home/upload_success', $error); } } Model: function do_upload() { $config['upload_path'] = './uploads/'; $config['allowed_types'] = 'gif|jpg|png'; $config['max_size'] = '2000'; $this->load->library('upload', $config); if ( ! $this->upload->do_upload()) { $error = array('error' => $this->upload->display_errors()); return $error; } else { $data = $this->upload->data(); $full_path = 'uploads/' . $data['file_name']; $spam = array( 'image_url' => $full_path, 'url' => $this->input->post('url') ); $id = $this->input->post('id'); $this->db->where('id', $id); $this->db->update('NavItemData', $spam); return true; } } View (called upload_form): <html> <head> <title>Upload Form</title> </head> <body> <?php if(isset($buttons)) : foreach($buttons as $row) : ?> <h2><?php echo $row->image_url; ?></h2> <p><?php echo $row->url; ?></p> <p><?php echo $row->name; ?></p> <p><?php echo anchor("upload/update_nav/$row->id", 'edit'); ?></p> <?php endforeach; ?> <?php endif; ?> </body> </html>

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  • SQL Server Native Client API examples

    - by ebasconp
    Hi everybody: I am writing a C++ application that needs to execute SQL queries in a SQL Server DB and I want to do it using SQL Server Native Client. The MSDN documentation has no a full reference on it and has a few examples so I am looking for some site having more information on how to connect, execute queries and retrieve results using this API. Do you guys know where can I more info on it? Thanks in advance, Ernesto

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  • Matching between product and customer personal information

    - by Yanshof
    I writing some application that find ( according to some question ) information about some person ( lets say that the information are weight, hight and age of the person ). In the other hand i have product list ( can be very big one ) and according to the product information i need to find the best matching between the person information and the product ( the product information that i have are water part, nitrogen part and ext. ) I can't use flow chart algorithm or Breadth-first search because the number of the product is dynamically ( read the product list from DB ... )

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  • How do i convert a string to a JSON object in JQuery?

    - by Rob
    I have a string in my db I want to pull into my page and convert to a json object. [ {id: 1,title: "Long Event", start: new Date(2009, 5, 6, 14, 0),end: new Date(2009, 5, 11)}, {id: 2,title: "Repeating Event", start: new Date(2009, 5, 2)}, {id: 3,title: "Meeting", start: new Date(2009, 5, 20, 9, 0)}, {id: 4,title: "Click for Facebook", start: new Date(2009, 5, 27, 16),end: new Date(2009, 5, 29), url: "http://facebook.com/"} ] How can I do this using JQuery?

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  • SQL SELECT Join?

    - by SurfingCat
    Hello, i got a MySql DB. There is a table with products and orders. Structure: Products: product_id, name, manufacturers_id Orders: orders_id, product_id, quantitiy Now I want to get all orders (show only products where product id=1). I tried: SELECT orders.orders_id, orders.product_od FROM products, orders WHERE products.manufacturers_id = 1 GROUP BY orders_id ORDER BY orders_id But this doesnt work

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  • C# SQL: What is the best way to implement a dynamic table?

    - by SirMoreno
    I want to allow the user to add columns to a table in the UI. The UI: Columns Name:__ Columns Type: Number/String/Date My Question is how to build the SQL tables and C# objects so the implementation will be efficient and scalable. My thought is to build two SQL tables: TBL 1 - ColumnsDefinition: ColId, ColName, ColType[Text] TBL 2 - ColumnsValues: RowId, ColId, Value [Text] I want the solution to be efficient in DB space, and I want to allow the user to sort the dynamic columns. I work on .NET 3.5 MSSQL 2008. Thanks.

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  • SQL ORDER BY thing1 ASC, thing2 DESC not working

    - by William
    it puts item1 down as DESC for some reason. edit: $sql_result = mysql_query("SELECT post, name, trip, Thread, sticky FROM (SELECT MIN(ID) AS min_id, MAX(ID) AS max_id, MAX(Date) AS max_date FROM test_posts GROUP BY Thread ) t_min_max INNER JOIN test_posts ON test_posts.ID = t_min_max.min_id WHERE Board=".$board." ORDER BY sticky ASC, max_date DESC", $db); http://prime.programming-designs.com/test_forum/viewboard.php?board=0&page=3

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  • Is there a way to add extra fields to an association in the ADO.NET Entity Framework?

    - by bigbird1040
    I would like to be able to model a many-to-many relationship that has extra details about the relationship. For example: Person: int id, String name Project: int id, String name ProjectPerson: Person.id, Project.id, String role Whenever I create the ProjectPerson association in the EF, I am unable to add the role attribute to the association. If I create the tables in my DB and then import it into the model, I lose the extra properties.

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  • How to get php form data to pdf in table structure using WAMP

    - by Fero
    Hi I am displaying all the users in the form using php where the data are fetched from db. When i click on the icon all users data should be show in a pdf with a good table structure. i am hereby using fpdf to generate it. i created pdf but the records are not in formatted structure. How should this can be done. kindly advice. thanks in advance strong text

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  • Grails dependency inject domain classes

    - by Don
    Hi, The Grails manual shows this example of dependency injecting domain classes: class Book { def bookService def buyBook() { bookService.buyBook(this) } } However, I tried this out, and bookService is null. My guess is that the dependency injection happens when an object is loaded from the DB, so the following will always return null new Book().bookService Can someone confirm this?

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  • SQL syntax error in Update statement VB.net

    - by Shane Fagan
    Hi, Im getting a strange syntax error when I run this in VB SQLString = "UPDATE Login SET Password = '" + PasswordTextBox.Text + "'" SQLString += " WHERE UserName = '" + UserNameTextBox.Text + "'" The Username is checked before getting to this part and is definitly in the db. It gives an exception saying syntax error in update statement. Anyone have any ideas whats wrong?

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