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How to use GROUP BY to concatenate strings in MySQL?
...doc/refman/5.0/en/group-by-functions.html#function_group-concat
From the link above, GROUP_CONCAT: This function returns a string result with the concatenated non-NULL values from a group. It returns NULL if there are no non-NULL values.
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Django ManyToMany filter()
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Just restating what Tomasz said.
There are many examples of FOO__in=... style filters in the many-to-many and many-to-one tests. Here is syntax for your specific problem:
users_in_1zone = User.objects.filter(zones__id=<id1>)
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What are best practices for multi-language database design? [closed]
...e multi-language database? To create localized table for every table is making design and querying complex, in other case to add column for each language is simple but not dynamic, please help me to understand what is the best choose for enterprise applications
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Maven Could not resolve dependencies, artifacts could not be resolved
This is supposed to be a working project from my friend. He demonstrated the project right in front of me, and then I copied the project, imported it as an existing maven project (I'm using m2eclipse plugin).
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What is a JavaBean exactly?
I understood, I think, that a "Bean" is a Java class with properties and getters/setters. As much as I understand, it is the equivalent of a C struct. Is that true?
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How do I update the notification text for a foreground service in Android?
I have a foreground service setup in Android. I would like to update the notification text. I am creating the service as shown below.
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Socket.IO - how do I get a list of connected sockets/clients?
I'm trying to get a list of all the sockets/clients that are currently connected.
26 Answers
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How to get form field's id in Django?
Is there any way to get the id of a field in a template?
4 Answers
4
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switch case statement error: case expressions must be constant expression
My switch-case statement works perfectly fine yesterday. But when I run the code earlier this morning eclipse gave me an error underlining the case statements in color red and says: case expressions must be constant expression, it is constant I don't know what happened. Here's my code below:
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How to search by key=>value in a multidimensional array in PHP
...s there any fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be.
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