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Get top 1 row of each group
... DESC) AS rn
FROM DocumentStatusLogs
)
SELECT *
FROM cte
WHERE rn = 1
If you expect 2 entries per day, then this will arbitrarily pick one. To get both entries for a day, use DENSE_RANK instead
As for normalised or not, it depends if you want to:
maintain status in 2 places
preserve status h...
How to return a file using Web API?
...it.
Here is example:
public HttpResponseMessage GetFile(string id)
{
if (String.IsNullOrEmpty(id))
return Request.CreateResponse(HttpStatusCode.BadRequest);
string fileName;
string localFilePath;
int fileSize;
localFilePath = getFileFromID(id, out fileName, out fileSi...
How do I pass a method as a parameter in Python
...call__() is meant to be implemented, not to be invoked from your own code.
If you wanted method1 to be called with arguments, then things get a little bit more complicated. method2 has to be written with a bit of information about how to pass arguments to method1, and it needs to get values for thos...
Seedable JavaScript random number generator
...
If you don't need the seeding capability just use Math.random() and build helper functions around it (eg. randRange(start, end)).
I'm not sure what RNG you're using, but it's best to know and document it so you're aware of i...
What are the uses of “using” in C#?
...g();
}
finally
{
// Check for a null resource.
if (myRes != null)
// Call the object's Dispose method.
((IDisposable)myRes).Dispose();
}
}
C# 8 introduces a new syntax, named "using declarations":
A using declaration is a variable declara...
How to reuse an ostringstream?
...lt;< "hello";
s.seekp(0);
s << "b";
assert(s.str() == "bello");
If you want to use the string for c-functions, you can use std::ends, putting a terminating null like this:
std::ostringstream s;
s << "hello";
s.seekp(0);
s << "b" << std::ends;
assert(s.str().size() == 5 ...
Difference between 'python setup.py install' and 'pip install'
...utomatically download all dependencies for a package for you. In contrast, if you use setup.py, you often have to manually search out and download dependencies, which is tedious and can become frustrating.
pip keeps track of various metadata that lets you easily uninstall and update packages with a ...
Write text files without Byte Order Mark (BOM)?
...to generate a BOM). There are two easy ways to do this:
1. Explicitly specifying a suitable encoding:
Call the UTF8Encoding constructor with False for the encoderShouldEmitUTF8Identifier parameter.
Pass the UTF8Encoding instance to the stream constructor.
' VB.NET:
Dim utf8WithoutBom As New Sys...
How to set up a cron job to run an executable every hour?
...
You're right. && is much better if there is a chance the cd target doesn't exist (for example if the diretory is on an NFS server that happens to be down).
– joast
Aug 13 '10 at 16:36
...
When to use an assertion and when to use an exception
...nning, but an exception would let the program continue running.
Note that if(group != null) is not an assertion, that is just a conditional.
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