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SQL Server Management Studio won't let me add an index to a table

...older in the table the "New Index" menu item is grayed out. I don't understand why. I've deleted all data in the table just in case, and refreshed and restarted SSMS, but no luck. I'm using SQL Server 2012 Business Intelligence SP1 CTP. ...
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Sort hash by key, return hash in Ruby

Would this be the best way to sort a hash and return Hash object (instead of Array): 10 Answers ...
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Is there a Subversion command to reset the working copy?

Is there a single Subversion command that would “reset” a working copy exactly to the state that’s stored in the repository? Something like git reset --hard or (ha, hard Git reset does not remove unversioned files either!) rm -rf wc && svn co <url> wc . ...
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Indentation shortcuts in Visual Studio

I'm new to Visual Studio 2010 and C#. How can I indent the selected text to left/right by using shortcuts? 8 Answers ...
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How to ssh to vagrant without actually running “vagrant ssh”?

... the way Vagrant logs in to my VM within a shell script using an ssh command, so I create an alias to my Vagrant instance. ...
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C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]

If DateTime is an object and default C# parameters can only be assigned compile-time constants, how do you provide default values for objects like DateTime? ...
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SELECT INTO a table variable in T-SQL

...' to go into the UserData 'name' variable but you are selecting 'location' and somehow assigning it to the UserData 'oldlocation' variable. Will SQL just map these automatically or will it throw some kind of exception? – Aran Mulholland Nov 17 '15 at 7:23 ...
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How do I rename a repository on GitHub?

...blem, because you only have to do #2. Let's say your username is someuser and your project is called someproject. Then your project's URL will be1 git@github.com:someuser/someproject.git If you rename your project, it will change the someproject part of the URL, e.g. git@github.com:someuser/ne...
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Interfaces with static fields in java for sharing 'constants'

I'm looking at some open source Java projects to get into Java and notice a lot of them have some sort of 'constants' interface. ...
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What's the difference between JPA and Hibernate? [closed]

I understand that JPA 2 is a specification and Hibernate is a tool for ORM. Also, I understand that Hibernate has more features than JPA 2. But from a practical point of view, what really is the difference? ...