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COUNT DISTINCT with CONDITIONS
I want to count the number of distinct items in a column subject to a certain condition, for example if the table is like this:
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What exactly does the Access-Control-Allow-Credentials header do?
I'm trying to understand how to use CORS and am confused about what the Access-Control-Allow-Credentials header does.
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Why does git revert complain about a missing -m option?
So I'm working on a project with other people, and there's multiple github forks being worked on. Someone just made a fix for a problem and I merged with his fork, but then I realized that I could find a better solution. I want to revert the commit I just made. I tried doing this with git revert HE...
How can I tell PyCharm what type a parameter is expected to be?
When it comes to constructors, and assignments, and method calls, the PyCharm IDE is pretty good at analyzing my source code and figuring out what type each variable should be. I like it when it's right, because it gives me good code-completion and parameter info, and it gives me warnings if I try t...
How to define a custom ORDER BY order in mySQL
In MySQL how do I define a custom sorting order.
4 Answers
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Differences between git pull origin master & git pull origin/master
What is the difference between git pull origin master and git pull origin/master ?
3 Answers
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What is the easiest way to push an element to the beginning of the array?
I can't think of a one line way to do this. Is there a way?
6 Answers
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Using :after to clear floating elements
I have a list and the li's have a float:left; . The contents after the <ul> should be aligned correctly. Therefore i can build the following:
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Disable file preview in VS2012
In VS2012 when you select a file in solution explorer it automatically opens file in a special "preview" tab.
5 Answers
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How do I reword the very first git commit message?
➜ ~myproject git:(master) git log
3 Answers
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