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Difference between Django's annotate and aggregate methods?
...; Book.objects.aggregate(average_price=Avg('price'))
{'average_price': 34.35}
Returns a dictionary containing the average price of all books in the queryset.
Annotation
>>> q = Book.objects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_auth...
How to create a new java.io.File in memory?
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answered Jul 11 '13 at 13:54
haraldKharaldK
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How to add Active Directory user group as login in SQL Server
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answered Feb 17 '11 at 12:51
marc_smarc_s
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What do single quotes do in C++ when used on multiple characters?
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What is the “Temporary ASP.NET Files” folder for?
I've discovered this folder in C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files and have a few questions.
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How do I stop a Git commit when VI is on the screen waiting for a commit message?
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edited May 11 '15 at 13:15
answered Dec 1 '10 at 11:21
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Remove refs/original/heads/master from git repo after filter-branch --tree-filter?
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edited Jul 24 '12 at 15:31
answered Oct 4 '11 at 22:44
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How to set initial size of std::vector?
... Jerry CoffinJerry Coffin
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Idiomatic way to convert an InputStream to a String in Scala
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edited Oct 8 '17 at 13:15
Flow
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answered Ma...