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Finding duplicate values in a SQL table
...
SELECT
name, email, COUNT(*)
FROM
users
GROUP BY
name, email
HAVING
COUNT(*) > 1
Simply group on both of the columns.
Note: the older ANSI standard is to have all non-aggregated columns in the GROUP BY but this has changed with the idea of "functional depe...
How to get a Docker container's IP address from the host
...s IP address.
As mentioned in the comments: if you are on Windows, use double quotes " instead of single quotes ' around the curly braces.
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How to compare two revisions in Bitbucket?
My team is using Bitbucket for our git repository and we've recently starting using the pull request functionality for code reviews. It works fine on the first review, but if it goes through multiple iterations (that is, changes are made and pull request updated), I would like to see a link with ju...
Am I immoral for using a variable name that differs from its type only by case?
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What is the reasoning of those telling you this is bad? I do this all the time. It is the simplest, expressive way to name a single variable of a type. If you needed two Person objects then you could prefix person with meaningful adjectives like
fastPerson
slowPerson
ot...
PHP - concatenate or directly insert variables in string
I am wondering, What is the proper way for inserting PHP variables into a string?
This way:
14 Answers
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Swing vs JavaFx for desktop applications [closed]
I have a very big program that is currently using SWT. The program can be run on both Windows, Mac and Linux, and it is a big desktop application with many elements.
Now SWT being somewhat old I would like to switch to either Swing or JavaFX. And I would like to hear your thoughts on three things.
...
What underlies this JavaScript idiom: var self = this?
I saw the following in the source for WebKit HTML 5 SQL Storage Notes Demo :
10 Answers
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Python code to remove HTML tags from a string [duplicate]
...eanhtml(raw_html):
cleanr = re.compile('<.*?>')
cleantext = re.sub(cleanr, '', raw_html)
return cleantext
Some HTML texts can also contain entities, that are not enclosed in brackets such as '&nsbm'. If that is the case then you might want to write the regex as
cleanr = re.compile...
My images are blurry! Why isn't WPF's SnapsToDevicePixels working?
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You may want to consider trying a new property available now in WPF4. Leave the RenderOptions.BitmapScalingMode to HighQuality or just don't declare it.
NearestNeighbor worked for me except it led to jaggy bitmaps when zooming in on the application. It also didn't seem to fix ...
How can I add a custom HTTP header to ajax request with js or jQuery?
...he headers property:
// Request with custom header
$.ajax({
url: 'foo/bar',
headers: { 'x-my-custom-header': 'some value' }
});
If you want to add a default header (or set of headers) to every request then use $.ajaxSetup():
$.ajaxSetup({
headers: { 'x-my-custom-header': 'some value'...