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How to avoid the “divide by zero” error in SQL?

... In order to avoid a "Division by zero" error we have programmed it like this: Select Case when divisor=0 then null Else dividend / divisor End ,,, But here is a much nicer way of doing it: Select dividend / NULLIF(divisor, 0) ... Now the only problem is to remember the NullIf bit, i...
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What is the HTML tabindex attribute?

... tabindex is a global attribute responsible for two things: it sets the order of "focusable" elements and it makes elements "focusable". In my mind the second thing is even more important than the first one. There are very few elements that are focusable by default (e.g. <a> a...
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What does the @ symbol before a variable name mean in C#? [duplicate]

I understand that the @ symbol can be used before a string literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with the @ symbol? ...
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How to update the value stored in Dictionary in C#?

...follow | edited Nov 28 '12 at 11:12 IT ppl 2,43811 gold badge3535 silver badges5252 bronze badges ...
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Is not an enclosing class Java

... ZShape is not static so it requires an instance of the outer class. The simplest solution is to make ZShape and any nested class static if you can. I would also make any fields final or static final that you can as well. ...
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Changing the default folder in Emacs

...older for C-x C-f on start-up. For instance when I first load Emacs and hit C-x C-f its default folder is C:\emacs\emacs-21.3\bin , but I would rather it be the desktop. I believe there is some way to customize the .emacs file to do this, but I am still unsure what that is. ...
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Does Internet Explorer 8 support HTML 5?

Is there any HTML5 support in IE8? Is it on the IE8 roadmap? 13 Answers 13 ...
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Parser Error Message: Could not load type 'TestMvcApplication.MvcApplication'

...getting the following error on one of our production servers. Not sure why it is working on the DEV server? 39 Answers ...
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How to make fill height

...eight of 1px, then the child div would have a heighted parent to calculate it's % from. Because your contents would be larger then 1px, the td would automatically grow, as would the div. Kinda a garbage hack, but I bet it would work. ...
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How can I get Git to follow symlinks?

Is my best be going to be a shell script which replaces symlinks with copies, or is there another way of telling Git to follow symlinks? ...