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Is it possible to GROUP BY multiple columns using MySQL?

Is it possible to GROUP BY more than one column in a MySQL SELECT query? For example: 7 Answers ...
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How to remove a column from an existing table?

How to remove a column from an existing table? 11 Answers 11 ...
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What LaTeX Editor do you suggest for Linux? [closed]

What LaTeX editor do you suggest? Could you please give me some links? 7 Answers 7 ...
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how to get the last character of a string?

How to get the last character of the string: 12 Answers 12 ...
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What exactly does a jar file contain?

As an intern, I use company code in my projects and they usually send me a jar file to work with. I add it to the build path in Eclipse and usually all is fine and dandy. ...
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How to duplicate a whole line in Vim?

How do I duplicate a whole line in Vim in a similar way to Ctrl + D in IntelliJ IDEA/ Resharper or Ctrl + Alt + ↑ / ↓ in Eclipse ? ...
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Internet Explorer 9 not rendering table cells properly

My website has always run smoothly with IE8, IE7, FF, Chrome and Safari. Now I'm testing it on IE9 and I'm experiencing a strange problem: in some pages, some tabular data renders incorrectly. ...
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Interop type cannot be embedded

I am creating a web application on the .NET 4.0 framework (beta2) in C#. 10 Answers 10...
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What is a database transaction?

Can someone provide a straightforward (but not simpler than possible) explanation of a transaction as applied to computing (even if copied from Wikipedia)? ...
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PHP global in functions

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