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INNER JOIN vs LEFT JOIN performance in SQL Server
I've created SQL command that uses INNER JOIN on 9 tables, anyway this command takes a very long time (more than five minutes). So my folk suggested me to change INNER JOIN to LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got si...
Making HTTP Requests using Chrome Developer tools
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Since the Fetch API is supported by Chrome (and most other browsers), it is now quite easy to make HTTP requests from the devtools console.
To GET a JSON file for instance:
fetch('https://jsonplaceholder.typicode.com/posts/1')
.then(res => res.json())
.t...
“Invalid form control” only in Google Chrome
The code below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable . Any ideas?
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How to deal with IntelliJ IDEA project files under Git source control constantly changing?
Everyone on our team uses IntelliJ IDEA, and we find it useful to put its project files (.ipr and .iml) into source control so that we can share build configurations, settings, and inspections. Plus, we can then use those inspection settings on our continuous integration server with TeamCity. (We ha...
AI2 Keep Awake
...t WakeLocks if you do not really need them, use them as rarely as possible and release them as soon as possible. If actions are to be performed only occasionally, it is not necessary for the CPU to be constantly active. Instead, an alarm can be used (see UrsAI2Alarm ). Motivation For so...
How to create a density plot in matplotlib?
...hat you generated with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the function covariance_factor of the gaussian_kde class. First, here is what you get without changing that function:
However, if I use the follo...
Error message “No exports were found that match the constraint contract name”
This morning I faced a problem while opening my Visual Studio solution, and when I tried to run it, it said:
26 Answers
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What is the difference between an Azure Web Site and an Azure Web Role
What are the material differences between the new Azure Web Sites and the traditional Azure Web Roles for an ASP.NET MVC application? What reason would I choose a "web site" over a "web role" or vice versa?
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2D cross-platform game engine for Android and iOS? [closed]
I've worked for some time with Unity3d and found it's 2D part with OnGUI() or GUITextures too clumsy. Also, even a smallest game done on Unity3d is at least 10MB download which is just too much for a 2D game.
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Installing Numpy on 64bit Windows 7 with Python 2.7.3 [closed]
..., it's impossible to build NumPy or SciPy on this platform using only free and open-source tools."
– Hans
Oct 19 '12 at 9:15
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