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MySQL DISTINCT on a GROUP_CONCAT()
I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table . Sample data below:
6 Answers
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SQL Server indexes - ascending or descending, what difference does it make?
When you create an index on a column or number of columns in MS SQL Server (I'm using version 2005), you can specify that the index on each column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be ...
Difference between File.separator and slash in paths
...raries for dealing with files, you can safely use / (slash, not backslash) on all platforms. The library code handles translating things into platform-specific paths internally.
You might want to use File.separator in UI, however, because it's best to show people what will make sense in their OS, r...
Extract source code from .jar file
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Use JD GUI. Open the application, drag and drop your JAR file into it.
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UILabel - auto-size label to fit text?
Is it possible to auto-resize the UILabel box/bounds to fit the contained text?
(I don't care if it ends up larger than the display)
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When should I use a table variable vs temporary table in sql server?
...arning more details in table variable. It says that temp tables are always on disk, and table variables are in memory, that is to say, the performance of table variable is better than temp table because table variable uses less IO operations than temp table.
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Mythical man month 10 lines per developer day - how close on large projects? [closed]
...they can beat the "10 lines per developer per day" from the "Mythical Man Month", and starting a project, I can usually get a couple hundred lines in in a day.
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?
I want to completely remove Python 2.7 from my Mac OS X 10.6.4. I managed to remove the entry from the PATH variable by reverting my .bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install p...
How do I find all files containing specific text on Linux?
I'm trying to find a way to scan my entire Linux system for all files containing a specific string of text. Just to clarify, I'm looking for text within the file, not in the file name.
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“Unresolved inclusion” error with Eclipse CDT for C standard library headers
...he symbols just fine, so the code will compile fine.
But the code-completion/indexer or preprocessor Eclipse is using doesn't know where stdio.h exists.
You need to specify the filesystem path where stdio.h is located.
The Eclipse documentation describes this in several sections for the compiler:...