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Can I concatenate multiple MySQL rows into one field?
...OR ', ')
FROM peoples_hobbies
GROUP BY person_id;
As Ludwig stated in his comment, you can add the DISTINCT operator to avoid duplicates:
SELECT person_id, GROUP_CONCAT(DISTINCT hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
As Jan stated in their comment, you can also sort the ...
What causes javac to issue the “uses unchecked or unsafe operations” warning
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This comes up in Java 5 and later if you're using collections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-saf...
Scroll to the top of the page using JavaScript?
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Funny as jeff's comment is honestly for people who just want things to work cross browser 95% of the time should just use jQuery. This is coming from someone who has to write a lot of pure javascript right now because we can't afford the ove...
What is the difference between Integrated Security = True and Integrated Security = SSPI?
...cation.
Recognized values are true, false, yes, no, and sspi (strongly recommended), which is equivalent to true.
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Is it possible to write to the console in colour in .NET?
Writing a small command line tool, it would be nice to output in different colours. Is this possible?
8 Answers
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C++11 features in Visual Studio 2012
...1.1 from 1.0(not yet available in developer preview)
Improved, but still incomplete, Alignment
completed strongly-typed enums
forward declared enums
Standard layout and trivial types
Atomics
Strong compare and exchange
Bi-directional fences
Data-dependency ordering
Range-based for loop
In early No...
How do I see a C/C++ source file after preprocessing in Visual Studio?
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cl.exe, the command line interface to Microsoft Visual C++, has three different options for outputting the preprocessed file (hence the inconsistency in the previous responses about Visual C++):
/E: preprocess to stdout (similar to GCC...
How to identify if the DLL is Debug or Release build (in .NET) [duplicate]
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The only best way to do this is to check the compiled assemblies itself. There is this very useful tool called '.NET Assembly Information' found here by Rotem Bloom. After you install this, it associates itself with .dll files to open with itself. After installing you c...