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MySQL - How to select data by string length
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select * from table order by length(column);
Documentation on the length() function, as well as all the other string functions, is available here.
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How do I find duplicates across multiple columns?
...TION BY s.name, s.city) AS qty
FROM stuff s
) t
WHERE t.qty > 1
ORDER BY t.name, t.city
While most recent RDBMS versions support count(*) over(partition by...) MySQL V 8.0 introduced "window functions", as seen below (in MySQL 8.0)
CREATE TABLE stuff(
id INTEGER NOT NULL
,name ...
javac not working in windows command prompt
...a java runtime environment. What you need is the Java development kit." in order to use compiler javac
javac will not work if you are pointing bin inside jre
In order to use javac in cmd , JDK must be installed in your system...
For javac path
path = C:\Program Files (x86)\Java\jre7\bin this ...
C# 4.0 optional out/ref arguments
...lOutParameter(&MyInteger); } // pass in the address of MyInteger.
In order to get this to compile, you will need to enable unsafe code in the project options. This is a really hacky solution that usually shouldn't be used, but if you for some strange, arcane, mysterious, management-inspired de...
How is an overloaded method chosen when a parameter is the literal null value?
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You can assign a string to a null value so it is valid and the order for java and most programming languages is fit to the closest type and then to object.
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What are -moz- and -webkit-? [duplicate]
...operties to be set specific to each individual browser/rendering engine in order for inconsistencies between implementations to be safely accounted for. The prefixes will, over time, be removed (at least in theory) as the unprefixed, the final version, of the property is implemented in that browser....
How to mark a class as Deprecated? [duplicate]
...licy (e.g., maintenance and existence of the classes until version X.X) in order to allow them to plan a proper migration to your new API.
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
...nt.scrollTop ||
window.pageYOffset || 0;
return [x, y];
};
In order to get the position of the mouse cursor, evt.clientX and evt.clientY in mousemove events will give the position relative to the document without adding the scroll position so the previous function will need to be incorp...
What is the difference between Ruby 1.8 and Ruby 1.9
...m)
end
svn.ruby-lang.org/repos/ruby/trunk/lib/rake.rb
Hash Keys Now Unordered
Ruby 1.9
irb(main):001:0> {:a=>"a", :c=>"c", :b=>"b"}
=> {:a=>"a", :c=>"c", :b=>"b"}
Ruby 1.8.6
irb(main):001:0> {:a=>"a", :c=>"c", :b=>"b"}
=> {:a=>"a", :b=>"b", :c=&...
How to group dataframe rows into list in pandas groupby?
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are the methods above guaranteed to preserve order? meaning that elements from the same row (but different columns, b and c in your code above) will have the same index in the resulting lists?
– Kai
May 2 '19 at 15:51
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