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What is the difference between JOIN and UNION?

...ed when columns from one table match columns from another. This match is called the join condition. This makes joins really great for looking up values and including them in results. This is usually the result of denormalizing (reversing normalization) and involves using the foreign key in one ta...
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Achieving bright, vivid colors for an iOS 7 translucent UINavigationBar

... UIView *colourView = [[UIView alloc] initWithFrame:CGRectMake(0.f, -20.f, 320.f, 64.f)]; colourView.opaque = NO; colourView.alpha = .7f; colourView.backgroundColor = barColour; self.navigationBar.barTintColor = barColour; [self.navigationBar.layer insertSublayer:colourView.layer atIndex:1]; ...
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OPTION (RECOMPILE) is Always Faster; Why?

...or the same thing. When a stored procedure is created (I suspect you are calling ad-hoc sql from .NET but if you are using a parameterized query then this ends up being a stored proc call) SQL Server attempts to determine the most effective execution plan for this query based on the data in your da...
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Get month name from Date

...d.getMonth()]); Note (2019-03-08) - This answer by me which I originally wrote in 2009 is outdated. See David Storey's answer for a better solution. share | improve this answer | ...
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How to get these two divs side-by-side?

... #parent_div_1, #parent_div_2, #parent_div_3 { width: 100px; height: 100px; border: 1px solid red; margin-right: 10px; float: left; } .child_div_1 { float: left; margin-right: 5px; } Check working example at http://js...
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What does %w(array) mean?

....], curly braces %w{...} or even something like exclamation marks %w!...!. All of these have the same behavior (returning an array). – ryanb Aug 13 '09 at 21:40 146 ...
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ImportError: numpy.core.multiarray failed to import

... following command in my Mac terminal: python -c "import numpy;print(numpy.__version__);print(numpy.__file__)"; This command gave me the version and location of numpy that I was using (turned out it was 1.6.2). I went to this location and manually replaced it with the numpy folder for 1.8, which re...
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NGinx Default public www location?

...with Apache before, so I am aware that the default public web root is typically /var/www/ . 30 Answers ...
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How do I append text to a file?

...ther source. Or else entered at the keyboard, doesn't matter. ^D Essentially, you can dump any text you want into the file. CTRL-D sends an end-of-file signal, which terminates input and returns you to the shell. share ...
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SVN command to delete all locally missing files

In SVN is there a command I can use to delete all locally missing files in a directory? 12 Answers ...