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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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(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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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' },...
add column to mysql table if it does not exist
... MySQL prior to 5.0. Nor are stored procedures supported prior to 5.0, so if you need to support MySQL 4.1, this solution isn't good.
One solution used by frameworks that use database migrations is to record in your database a revision number for the schema. Just a table with a single column and ...
What is a “context bound” in Scala?
...lished, but context bounds are preferred over view bounds (view bounds are now deprecated). One suggestion is that a context bound is preferred when you need to transfer an implicit definition from one scope to another without needing to refer to it directly (this is certainly the case for the Cla...
What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
I'm trying to get a cross-plattform build system working using CMake. Now the software has a few dependencies. I compiled them myself and installed them on my system.
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android: move a view on touch move (ACTION_MOVE)
I'd like to do a simple control: a container with a view inside. If I touch the container and I move the finger, I want to move the view to follow my finger.
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How do I check if a number evaluates to infinity?
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if (result == Number.POSITIVE_INFINITY || result == Number.NEGATIVE_INFINITY)
{
// ...
}
You could possibly use the isFinite function instead, depending on how you want to treat NaN. isFinite returns false if your numbe...
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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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...