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Retrieving the last record in each group - MySQL
...l popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) AS rn
FROM messages AS m
)
SELECT * FROM ranked_messages WHERE rn = 1;
Below is the original answer...
What is the difference between mocking and spying when using Mockito?
...ly and occasionally, for example when dealing with legacy code." The unit testing space suffers from too many ways of doing the same thing.
– gdbj
Mar 22 '17 at 17:53
add a c...
Attach a file from MemoryStream to a MailMessage in C#
... (var message = new MailMessage("me@example.com", "you@example.com", "Just testing", "See attachment..."))
{
writer.WriteLine("Comma,Seperated,Values,...");
writer.Flush();
stream.Position = 0; // read from the start of what was written
message.Attachments.Add(new Attachment(str...
How do I set up a basic Ruby project?
...ct with 10 ~ 20 classes/files. I need some gems and I want to use RSpec as test framework.
4 Answers
...
How can I test that a value is “greater than or equal to” in Jasmine?
... This works, but unfortunately, the message produced by a failing ">=" test is not particularly expressive ("expected false to be truthy"). And by the way, there is no need for the test to be async (ok, just nitpicking ;).
– hashchange
Jul 17 '15 at 11:16
...
Convert XML to JSON (and back) using Javascript
...Sample:// XML string to JSON var xmlText = "<MyOperation><test>Success</test><test2><item>ddsfg</item><item>dsdgfdgfd</item></test2></MyOperation>"; var jsonObj = X2JS.xml_str2json( xmlText ); alert (jsonObj.MyOperation.test...
How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?
...es that are helpful. What I did to solve this was to apply the integration tests logic to regular unit tests (although proper unit tests should be submodule specific, this isn't always the case).
In the parent pom.xml, add these properties:
<properties>
<!-- Sonar -->
<sonar...
How to divide flask app into multiple py files?
My flask application currently consists of a single test.py file with multiple routes and the main() route defined. Is there some way I could create a test2.py file that contains routes that were not handled in test.py ?
...
How to generate sample XML documents from their DTD or XSD?
...substantial amount of XML transformations. We do not have any proper input test data per se, only DTD or XSD files. We'd like to generate our test data ourselves from these files. Is there an easy/free way to do that?
...
How can I use a batch file to write to a text file?
...notes below):
rem Saved in D:\Temp\WriteText.bat
@echo off
echo This is a test> test.txt
echo 123>> test.txt
echo 245.67>> test.txt
Output:
D:\Temp>WriteText
D:\Temp>type test.txt
This is a test
123
245.67
D:\Temp>
Notes:
@echo off turns off printing of each comman...