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Find rows that have the same value on a column in MySQL
...t.
SELECT email,
count(*) AS c
FROM TABLE
GROUP BY email
HAVING c > 1
ORDER BY c DESC
If you want the full rows:
select * from table where email in (
select email from table
group by email having count(*) > 1
)
...
Create space at the beginning of a UITextField
... 0, right: 5)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func editingRect(f...
How to redirect to a 404 in Rails?
...n for the render method.
def action
# here the code
render :status => 404
end
If you want to render the standard 404 page you can extract the feature in a method.
def render_404
respond_to do |format|
format.html { render :file => "#{Rails.root}/public/404", :layout => false,...
Calculate last day of month in JavaScript
... m===2 ? y & 3 || !(y%25) && y & 15 ? 28 : 29 : 30 + (m+(m>>3)&1);
}
Given the bit-shifting this obviously assumes that your m & y parameters are both integers, as passing numbers as strings would result in weird results.
JSFiddle: http://jsfiddle.net/TrueBlueAussie/...
The object cannot be deleted because it was not found in the ObjectStateManager
... {
var project = context.Projects
.Include(p => p.Reports.Select(q => q.Issues.Select(r => r.Profession)))
.Include(p => p.Reports.Select(q => q.Issues.Select(r => r.Room)))
.SingleOrDefault(x => x.Id == id);
...
MongoDB logging all queries
...og all queries:
$ mongo
MongoDB shell version: 2.4.9
connecting to: test
> use myDb
switched to db myDb
> db.getProfilingLevel()
0
> db.setProfilingLevel(2)
{ "was" : 0, "slowms" : 1, "ok" : 1 }
> db.getProfilingLevel()
2
> db.system.profile.find().pretty()
Source: http://docs.mong...
What characters are valid for JavaScript variable names?
...ppercase letter (Lu)”, “Lowercase letter (Ll)”, “Titlecase letter (Lt)”, “Modifier letter (Lm)”, “Other letter (Lo)”, or “Letter number (Nl)”.
The rest of the string can contain the same characters, plus any U+200C zero width non-joiner characters, U+200D zero width joiner...
How to automatically indent source code?
...pends on your keyboard layout, so if one does not work - check what Edit->Advanced says. Indeed you can customize it to you liking in Tools->Options->Environment->Keyboard.
– Alexei Levenkov
Jun 24 '15 at 17:14
...
Using IntelliJ to amend git commit message
...
View => Tool Windows => Version Control. (Windows (Alt + 9) / OS X (Cmd + 9))
IntelliJ 2017.1 and higher => Go to Log and right click + reword or press F2.
While you are on the same branch, ( your checked out branch is ...
IntelliJ does not show 'Class' when we right click and select 'New'
... blue).
If this is not the case, right click your root source directory -> Mark As -> Source Root.
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