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How to use count and group by at the same select statement
I have an sql select query that has a group by.
I want to count all the records after the group by statement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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Nginx — static file serving confusion with root & alias
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This is all great (it helped me fix my config issues), but I wonder what logging settings people could use to help diagnose these kinds of problems? Like, anything that would print to logs stuff like "received request for [...], mat...
DbEntityValidationException - How can I easily tell what caused the error?
I have a project that uses Entity Framework. While calling SaveChanges on my DbContext , I get the following exception:
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Is there a way to take a screenshot using Java and save it to some sort of image?
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Believe it or not, you can actually use java.awt.Robot to "create an image containing pixels read from the screen." You can then write that image to a file on disk.
I just tried it, and the whole thing ends up like:
Rectangle screenRect = new Rectangle(T...
How to prevent blank xmlns attributes in output from .NET's XmlDocument?
...:name-space-1.0"));
Console.WriteLine(xml.OuterXml);
Thanks everyone to all your answers which led me in the right direction!
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How do I encode/decode HTML entities in Ruby?
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HTMLEntities can do it:
: jmglov@laurana; sudo gem install htmlentities
Successfully installed htmlentities-4.2.4
: jmglov@laurana; irb
irb(main):001:0> require 'htmlentities'
=> []
irb(main):002:0> HTMLEntities.new.decode "¡I'm highly annoyed...
System.Net.WebException HTTP status code
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Not sure whether the ?. operator was originally named null propagation operator or null-conditional operator during preview release. But Atlassian resharper gives a warning to use null propagation operator in such scenarios. Nice to know that it is also called null-co...
Override body style for content in an iframe
...e, I am hiding an element with a specific class in the inner iframe.
Basically, you just append a 'style' element to the 'head' of the inner iframe.
$('iframe').load( function() {
$('iframe').contents().find("head")
.append($("<style type='text/css'> .my-class{display:none;} <...
In c# is there a method to find the max of 3 numbers?
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Well, you can just call it twice:
int max3 = Math.Max(x, Math.Max(y, z));
If you find yourself doing this a lot, you could always write your own helper method... I would be happy enough seeing this in my code base once, but not regularly.
(N...
How can I replace text with CSS?
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display: none; doesn’t work because ::after really means “inside this element, but at the end”, in case anyone was curious.
– Ry-♦
Jun 30 '14 at 22:17
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