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How do you create a random string that's suitable for a session ID in PostgreSQL?

I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this? ...
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Can you center a Button in RelativeLayout?

I'm trying to center a button in relative layout, is this possible? I've tried the Gravity and Orientation functions but they don't do anything. ...
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How to get the unique ID of an object which overrides hashCode()?

When a class in Java doesn't override hashCode() , printing an instance of this class gives a nice unique number. 10 Answ...
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Appending to an existing string

To append to an existing string this is what I am doing. 5 Answers 5 ...
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Difference between RegisterStartupScript and RegisterClientScriptBlock?

...iptBlock is that RegisterStartupScript puts the javascript before the closing </form> tag of the page and RegisterClientScriptBlock puts it right after the starting <form> tag of the page? ...
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Entity Framework Migrations renaming tables and columns

...ple entities and their navigation properties and generated a new Migration in EF 5. As is usual with renames in EF migrations, by default it was going to drop objects and recreate them. That isn't what I wanted so I pretty much had to build the migration file from scratch. ...
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TypeScript: problems with type system

I'm just testing typescript in VisualStudio 2012 and have a problem with its type system. My html site has a canvas tag with the id "mycanvas". I'm trying to draw a rectangle on this canvas. Here's the code ...
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Run a single Maven plugin execution?

I thought I was an experienced Maven user, but I am having a mental block on how to do this! 2 Answers ...
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How to get distinct values for non-key column fields in Laravel?

... You should use groupby. In Query Builder you can do it this way: $users = DB::table('users') ->select('id','name', 'email') ->groupBy('name') ->get(); ...
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Set the absolute position of a view

Is it possible to set the absolute position of a view in Android? (I know that there is an AbsoluteLayout , but it's deprecated...) ...