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Avoid duplicates in INSERT INTO SELECT query in SQL Server
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Just a clarification on the NOT EXISTS version, you'll need a WITH(HOLDLOCK) hint or no locks will be taken (because there are no rows to lock!) so another thread could insert the row under you.
– IDisposable
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Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test
I have scoured the internet for almost five days now looking for a fix to this issue, but I cannot seem to find and fix it on my own, mainly because I am so new to both Maven and PlayN so I'm not entirely sure at what I'm looking at exactly. But, it is clearly fizzing up at building the core. Seem...
(this == null) in C#!
...t should NOT be possible. You are not allowed to write : base(CheckNull()) if CheckNull is not static, and alike you should not be able to inline an instance-bound lambda.
– quetzalcoatl
Aug 14 '12 at 0:29
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What's the difference between a file descriptor and file pointer?
I want to know the difference between a file descriptor and file pointer.
9 Answers
9
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Fastest way to copy file in node.js
...perations with the file system (copying/reading/writing etc). I'd like to know which methods are the fastest, and I'd be happy to get an advice. Thanks.
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Is there an easy way to request a URL in python and NOT follow redirects?
...ther than return the first request it will raise a RedirectLimit exception if it receives a redirection status code. To return the inital response you need to set follow_redirects to False on the Http object:
import httplib2
h = httplib2.Http()
h.follow_redirects = False
(response, body) = h.reques...
How do I set the default locale in the JVM?
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In the answers here, up to now, we find two ways of changing the JRE locale setting:
Programatically, using Locale.setDefault() (which, in my case, was the solution, since I didn't want to require any action of the user):
Locale.setDefault(new Local...
mongo group query how to keep fields
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If you want to keep the information about the first matching entries for each group, you can try aggregating like:
db.test.aggregate({
$group: {
_id : '$name',
name : { $first: '$name' },
age : { $first: '$age' },...
What is the best algorithm for overriding GetHashCode?
...alue isn't a prime. (The multiplication constant is prime though. I don't know quite how important that is.)
This is better than the common practice of XORing hashcodes for two main reasons. Suppose we have a type with two int fields:
XorHash(x, x) == XorHash(y, y) == 0 for all x, y
XorHash(x, y) ...
Default value in Doctrine
... and undocummented features are prone to being removed. As it's documented now, you should be safe using it.
– jonathancardoso
Nov 1 '15 at 18:50
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