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MySQL - Rows to Columns
... only found solutions for SQL Server/Access. I need a solution in MySQL (5.X).
12 Answers
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Pass request headers in a jQuery AJAX GET call
I am trying to pass request headers in an AJAX GET using jQuery. In the following block, "data" automatically passes the values in the querystring. Is there a way to pass that data in the request header instead ?
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How to change language settings in R
...t it to French and then back again:
> Sys.setenv(LANG = "fr")
> 2 + x
Erreur : objet 'x' introuvable
> Sys.setenv(LANG = "en")
> 2 + x
Error: object 'x' not found
A list of the abbreviations can be found here.
Sys.getenv() gives you a list of all the environment variables that are se...
Ignore outliers in ggplot2 boxplot
How would I ignore outliers in ggplot2 boxplot? I don't simply want them to disappear (i.e. outlier.size=0), but I want them to be ignored such that the y axis scales to show 1st/3rd percentile. My outliers are causing the "box" to shrink so small its practically a line. Are there some techniques...
Get the client's IP address in socket.io
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@GarciadelCastillo you are behind a proxy probably. try this: stackoverflow.com/a/11187053/971459
– Samson
Jun 25 '13 at 9:30
4
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Can't update Macports (with Mac OS X Mavericks)
After upgrading Mac OS X to newest version Mavericks, I attempted to selfupdate my Macports, but it failed:
9 Answers
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Select first row in each GROUP BY group?
...d by any database:
But you need to add logic to break ties:
SELECT MIN(x.id), -- change to MAX if you want the highest
x.customer,
x.total
FROM PURCHASES x
JOIN (SELECT p.customer,
MAX(total) AS max_total
FROM PURCHASES p
GROUP BY ...
Explain the encapsulated anonymous function syntax
Can you explain the reasoning behind the syntax for encapsulated anonymous functions in JavaScript? Why does this work: (function(){})(); but this doesn't: function(){}(); ?
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Current time formatting with Javascript
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A JavaScript Date has several methods allowing you to extract its parts:
getFullYear() - Returns the 4-digit year
getMonth() - Returns a zero-based integer (0-11) representing the month of the year.
getDate() - Returns the day of the month (1-31).
getDay() - Returns the day of t...