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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 G...
How to find the Number of CPU Cores via .NET/C#?
...erSystem").Get())
{
Console.WriteLine("Number Of Physical Processors: {0} ", item["NumberOfProcessors"]);
}
Cores:
int coreCount = 0;
foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_Processor").Get())
{
coreCount += int.Parse(item["NumberOfCores"]....
How to RedirectToAction in ASP.NET MVC without losing request data
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edited Feb 7 '16 at 0:59
Markus Safar
5,60155 gold badges2323 silver badges4040 bronze badges
answ...
Perform Segue programmatically and pass parameters to the destination view
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107
The answer is simply that it makes no difference how the segue is triggered.
The prepareForSeg...
What is the right way to POST multipart/form-data using curl?
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edited May 20 '15 at 18:35
evandrix
5,36333 gold badges2525 silver badges3232 bronze badges
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Generating all permutations of a given string
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607
public static void permutation(String str) {
permutation("", str);
}
private static void...
R - Markdown avoiding package loading messages
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edited Aug 7 '18 at 21:10
answered Oct 26 '12 at 16:35
Yi...
Temporarily disable Eclipse plugin
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answered Jun 6 '10 at 4:46
zvikicozvikico
9,58944 gold badges3535 silver badges4444 bronze badges
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How do I create an empty array in YAML?
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edited Feb 24 '11 at 22:50
answered Feb 24 '11 at 20:54
ma...
Set multiple properties in a List ForEach()?
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edited Feb 12 at 19:03
answered Feb 2 '12 at 15:17
Ju...