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Postgresql aggregate array
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Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks
FROM student s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the columns on SELECT to GROUP BY, e.g. you d...
AngularJS $http, CORS and http authentication
... share one learned lesson. First I want to thank igorzg. His answer helped me a lot. The scenario is the following: You want to send POST request to a different domain with AngularJS $http service. There are several tricky things to be aware of when getting AngularJS and the server setup.
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Generating all permutations of a given string
... , but what about longer string such as abcdefgh ? Is there any Java implementation example?
52 Answers
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How to add 10 days to current time in Rails
I tried doing something like
6 Answers
6
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R - Markdown avoiding package loading messages
... When I source a file in an R-Chunk, the knitr output includes external comments as follows:
4 Answers
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Gzip versus minify
I had a somewhat lively discussion the other day about minifying Javascript and CSS versus someone who prefers using Gzip.
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Force Java timezone as GMT/UTC
I need to force any time related operations to GMT/UTC, regardless the timezone set on the machine. Any convenient way to so in code?
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Convert one date format into another in PHP
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The second parameter to date() needs to be a proper timestamp (seconds since January 1, 1970). You are passing a string, which date() can't recognize.
You can use strtotime() to convert a date string into a timestamp. However, even strtoti...
Green Bars in Visual Studio 2010
...at are they for? They look pretty random but of course they have to have some meaning. Can any one tell me?
6 Answers
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Checkout remote branch using git svn
...see all the Subversion branches on the git side:
git branch -r
Say the name of the branch in Subversion is waldo. On the git side, you'd run
git checkout -b waldo-svn remotes/waldo
The -svn suffix is to avoid warnings of the form
warning: refname 'waldo' is ambiguous.
To update the git branch ...