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Get records with max value for each group of grouped SQL results
...wers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggregated columns are not listed in the group by clause" or similar. Because this solution uses undocumented behavior, the more cautious may want to include a test to ...
How to return multiple objects from a Java method?
...
If you know you are going to return two objects, you can also use a generic pair:
public class Pair<A,B> {
public final A a;
public final B b;
public Pair(A a, B b) {
this.a = a;
this.b = b;
}
...
Landscape printing from HTML
...be in landscape and not the entire page?
– SearchForKnowledge
Jun 9 '15 at 15:47
2
@SearchForKnow...
How to change color in markdown cells ipython/jupyter notebook?
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The "font" tag is now deprecated. You can use the "span" tag with the style attribute instead.
– Paul
2 days ago
...
Alternate FizzBuzz Questions [closed]
...ogramming you should be able to do most pretty quickly. Even if you don't know the language well you should at least be able to give the idea behind how to do something.
Using this test one of my previous bosses saw everything from people who aced it all pretty quick, to people who could do most pr...
How to implement WiX installer upgrade?
...add:
<RemoveExistingProducts Before="InstallInitialize" />
From now on whenever I install the product it removed previous installed versions.
Note: replace upgrade Id with your own GUID
share
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How to check if a database exists in SQL Server?
...EN 1
ELSE 0
END
AS BIT)
return @result
END
GO
Now you can use it like this:
select [dbo].[DatabaseExists]('master') --returns 1
select [dbo].[DatabaseExists]('slave') --returns 0
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What does axis in pandas mean?
...ified to reduce this confusion. I'd do it myself if I could, but for right now, I only know how to use them. I do understand which axis to use to get the data I want. However confusion remains as to why mean() and drop() feel like they affect opposing axes.
– matty
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Singular or plural controller and helper names in Rails
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Rails help now uses plural: rails generate controller CreditCards open debit credit close
– notapatch
Jun 27 '13 at 14:48
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In PHP with PDO, how to check the final SQL parametrized query? [duplicate]
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Accepting this for now as it makes sense. It's not very convenient for debugging then...
– JB Hurteaux
Nov 23 '09 at 22:32
2...