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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
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According to the documentation, you should use:
from django.db.models import Count
Transaction.objects.all().values('actor').annotate(total=Count('actor')).order_by('total')
values() : specifies which columns are going to be used to "group by"
D...
MySQL - force not to use cache for testing speed of query
I'm testing the speed of some queries in MySQL. The database is caching these queries making it difficult for me to get reliable results when testing how fast these queries are.
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How to do this in Laravel, subquery where in
... query is applying it to table of ProductCategory....right?? or is there something I am missing..?
– hhsadiq
Jul 7 '15 at 8:03
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Replace all spaces in a string with '+' [duplicate]
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This selected solution is slower on large replacement compared to the reg expression version. Test with the 3 solutions posted: jsbin.com/isadi3/2 Firefox has minimal timing difference, IE has a noticeable difference. So if speed matters and you have a large set of replacem...
“for line in…” results in UnicodeDecodeError: 'utf-8' codec can't decode byte
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I had the same issue UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd0 in position 32: invalid continuation byte. I used python 3.6.5 to install aws cli. And when I tried aws --version it failed with this error. So I had to edit /...
HTML: How to create a DIV with only vertical scroll-bars for long paragraphs?
...dard here is to not answer a question with "just" a link, as links may become invalid. You should include enough information to answer the question directly in your answer, and then have the link as a reference.
– Jeffrey Harmon
Feb 18 '15 at 19:42
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Duplicate AssemblyVersion Attribute
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I have also run into this issue in the past, so I am going to assume that your build process provides assembly information separately to providing versioning. And that causes a duplication as your project also has that info in the AssemblyInfo.cs file. So remove the file and I think it shou...
How to resolve “You need to have Ruby and Sass installed and in your PATH for this task to work” War
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This is the same for Windows
– Matt Canty
Sep 23 '15 at 12:51
1
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promise already under evaluation: recursive default argument reference or earlier problems?
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Formal arguments of the form x=x cause this. Eliminating the two instances where they occur we get:
f <- function(x, T) {
10 * sin(0.3 * x) * sin(1.3 * x^2) + 0.001 * x^3 + 0.2 * x + 80
}
g <- function(x, T, f. = f) { ## 1...
Can I add jars to maven 2 build classpath without installing them?
Maven2 is driving me crazy during the experimentation / quick and dirty mock-up phase of development.
24 Answers
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