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How do I modify a MySQL column to allow NULL?

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Alter Table Add Column Syntax

I'm trying to programmatically add an identity column to a table Employees. Not sure what I'm doing wrong with my syntax. 4...
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Programmatically set height on LayoutParams as density-independent pixels

...dependent pixels (dp)? It looks like the height/width, when set programmatically, are in pixels and not dp. 5 Answers ...
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Set encoding and fileencoding to utf-8 in Vim

What is the difference between these two commands? 3 Answers 3 ...
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Run an exe from C# code

I have an exe file reference in my C# project. How do I invoke that exe from my code? 5 Answers ...
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How do I skip a match when using Ctrl+D for multiple selections in Sublime Text 2?

I have some code like: 5 Answers 5 ...
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Deprecated warning for Rails 4 has_many with order

I have this model in my rails app which throws warning when I try to create records in console. 5 Answers ...
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How to stop a JavaScript for loop?

I'm using this JavaScript to iterate through an array and find a matching array element: 4 Answers ...
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How to use the CSV MIME-type?

In a web application I am working on, the user can click on a link to a CSV file. There is no header set for the mime-type, so the browser just renders it as text. I would like for this file to be sent as a .csv file, so the user can directly open it with calc, excel, gnumeric, etc. ...
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How do you turn off auto-capitalisation in HTML form fields in iOS?

By default, iOS’s keyboard sets the first letter in text form fields (including type=email ) to uppercase. (At least prior to iOS 5.) ...