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• Why is it necessary to remove and then re-add a user to a SQL Server database after restoring it fro

  - by Craig Johnston

  Why is it necessary to remove and then re-add a user to a SQL Server database after restoring it from a file? If I don't do this, I get a "User login failed" when trying to access the database using this username from apps.

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• Faster way to know the total number of rows in MySQL database?

  - by Starx

  If I need to know the total number of rows in a table of database I do something like this: $query = "SELECT * FROM tablename WHERE link='1';"; $result = mysql_query($query); $rows = mysql_fetch_array($result); $count = count($rows); So you see the total number of data is recovered scanning through the entire database. Is there a better way?

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• setting the datetime in jquery datetime picker with database datetime.

  - by sagar

  hi,i am developing a multi language site.My problem is i need to set the date and time in the datepicker from the database as the user may have choose the different timezone while registering in the site.At present i am getting the server time on my jquery datepicker. Thanks in advance. Technology used:Asp.net mvc,Jquery. Database:Sql server2005. O/s :winxp.

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• How to delete every reference of an object in Python?

  - by Juanjo Conti

  Supose you have something like: x = "something" b = x l = [b] How can you delete the object only having one reference, say x? del x won't do the trick; the object is still reachable from b, for example.

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• How does one concatenate database values into a string?

  - by ggg

  I would like to string together database values into a string. Something like $a "text" $b. And then use the entire string as a variable, let's say $c. Is it better to do this at the database level? Will php use lots of resources to do this?

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• Flash object wont load inside the application but loads in separated file.

  - by Taverneiro

  I have a Flash object that loads fine in a static sample HTML but doesnt inside the application. I saw something interesting in firebug. When the page loads the object is loaded two times. In the first one I get a Partial Response status but the content-type of the package is right. In the second time the whole package is transfered but the content-type is wrong! I am using apache 2.2.14.

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• Are there any concerns I should have about storing a Python Lock object in a Beaker session?

  - by Jack

  There is a certain page on my website where I want to prevent the same user from visiting it twice in a row. To prevent this, I plan to create a Lock object (from Python's threading library). However, I would need to store that across sessions. Is there anything I should watch out for when trying to store a Lock object in a session (specifically a Beaker session)?

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• How do I specify a recovery model (full, simple or bulk-logged) when creating a database in T-SQL co

  - by Ivan

  How do I specify a recovery model (full, simple or bulk-logged) when creating a database in a CREATE DATABASE query in T-SQL code?

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• Can I use Linq-to-xml to persist my object state without having to use/know Xpath & XSD Syntax?

  - by Greg

  Hi, Can I use Linq-to-xml to persist my object state without having to use/know Xpath & XSD Syntax? ie. really looking for simple but flexible way to persist a graph of object data (e.g. have say 2 or 3 classes with associations) - if Linq-to-xml were as simple as saying "persist this graph to XML", and then you could also query it via Linq, or load it into memory again/change/then re-save to the xml file.

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• How can an object not be compared to null?

  - by ProfK

  I have an 'optional' parameter on a method that is a KeyValuePair. I wanted an overload that passes null to the core method for this parameter, but in the core method, when I want to check if the KeyValuePair is null, I get the following error: Operator '!=' cannot be applied to operands of type System.Collections.Generic.KeyValuePair<string,object>' and '<null>. How can I not be allowed to check if an object is null?

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• How are lookup columns for lists maintained in Sharepoint Content database?

  - by Abhishek Rao

  Can someone explain how are lookup columns for lists maintained in Sharepoint Content database? How is the relationship maintained in the database?

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• What is a reverse reference to the DOM object?

  - by chadley

  In this link: http://css-tricks.com/snippets/jquery/jquery-plugin-template/ it has a line of code that says // Add a reverse reference to the DOM object base.$el.data("yourPluginName", base); what does the "reverse reference to the DOM object" mean?

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• Where is the html5 local database located on a client machine?

  - by gath

  Am playing around with html5 local storage on different browsers (Firefox, Opera, Safari & Chrome) and am just wondering where is the location for the local database that i create using "opendatabase". Can i change the location of this database? Gath

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• how to write the array into the sqlite database for objective-c ?

  - by uttam

  i have taken the data from databse into array now i want it to send it back into database by using the insert query. how can i insert the array of the data into the database.

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• one or more Entity models for one database for entity framework?

  - by KentZhou

  When use entity framework for DAL tier, VS 2010 can create edmx for each database. Question: If I have a database with many tables, should I create only one edmx for all tables or mutiple edmx files? for example, maybe all security tables for one edmx file, other tables for another edmx file. If there is more than one, then in other tiers, there will have more then on ObjectContext in code for business logic. Which one it the best solution for this case?

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• C#, how to create an XML document from an object?

  - by JL

  I have the following variable that accepts a file name: var xtr = new XmlTextReader(xmlFileName) { WhitespaceHandling = WhitespaceHandling.None }; var xd = new XmlDocument(); xd.Load(xtr); I would like to change it so that I can pass in an object. I don't want to have to serialize the object to file first. Is this possible?

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• How do I create a duplicate instance of object contained in a shared pointer in c++?

  - by user367848

  I have an object which has both a copy constructor and assignment operator defined. It is enclosed inside a shared pointer. I want to make another shared pointer that contains a copy of the original shared pointer (i.e. new shared pointer to a new memory location, which however, has the same data as the original object). Thanks for any assistance.

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• In Asp.net (c#) ,how to store an image in database(linq to sql) ?

  - by Anand

  i need to get an image from client and displayed(preview) before saving it into database..and then should be saved in database after getting preview..? Is is possible in Asp.net using c#... ?

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• Faster way to know the tolal number of rows in Mysql Database?

  - by Starx

  If I need to know the total number of rows in a table of database I do something like $query = "SELECT * FROM tablename WHERE link='1';"; $result = mysql_query($query); $rows = mysql_fetch_array($result); $count = count($rows); So you see the total number of data is recovered scanning through entire database Is there a better way

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• How can I return a Future object with Spring without writing concurrency logic?

  - by Johan

  How can I return a java.util.concurrent.Future object with a Receipt object and only use the @javax.ejb.Asynchronous annotation? And do I need any extra configuration to let Spring handle ejb annotations? I don't want to write any concurrency logic myself. Here's my attempt that doesn't work: @Asynchronous public Future<Receipt> execute(Job job) { Receipt receipt = timeConsumingWork(job); return receipt; }

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• How to remove a single, specific object from a ConcurrentBag<>?

  - by routeNpingme

  With the new ConcurrentBag<T> in .NET 4, how do you remove a certain, specific object from it when only TryTake() and TryPeek() are available? I'm thinking of using TryTake() and then just adding the resulting object back into the list if I don't want to remove it, but I feel like I might be missing something. Is this the correct way?

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• ADO.net - how do I reload database data into an existing & filled DataTable?

  - by Greg

  Hi, If I have an existing DataTable (already filled) but then I want to refresh/reload the data from the database directly (as I know there was a non-ADO.net process that changed data without going through the DataTable), however do I do this "refresh". Note the database data at that point can overwrite whatever is in the DataTable. thanks

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• Binding the IsSelected property of ListBoxItem to a property on the object from it's source.

  - by BrandonS

  I have a WPF ListBox control and I'm setting it's "ItemsSource" to a collection of item objects. How can I bind the "IsSelected" property of the ListBoxItem to a "Selected" property of a corresponding item object without having an instance of the object to set as a binding.Source?

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• How to assign a value of a property to a var ONLY if the object isn't null

  - by Blankman

  In my code, is there a shorthand that I can use to assign a variable the value of a object's property ONLY if the object isn't null? string username = SomeUserObject.Username; // fails if null I know I can do a check like if(SomeUserObject != null) but I think I saw a shorthand for this kind of test. I tried: string username = SomeUserObject ?? "" : SomeUserObject.Username; But that doesn't work.

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• What is simpliest C# function to parse Json String into object?

  - by Ole Jak

  What is simpliest C# function to parse Json String into object and display it (C# xaml WPF)? (for example object wit 2 arrays - arrA and arrB)

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