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SQL set values of one column equal to values of another column in the same table
I have a table with two DATETIME columns.
5 Answers
5
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SQL - Update multiple records in one query
I have table - config .
Schema:
config_name | config_value
9 Answers
9
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Random string generation with upper case letters and digits
...g uppercase ASCII chars and digits:
>>> string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> string.digits
'0123456789'
>>> string.ascii_uppercase + string.digits
'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
Then we use a list comprehension to create a list of 'n' elements...
How to chain scope queries with OR instead of AND?
...astname=?', 'John', 'Smith')
Right now, there isn't any other OR support by the new AR3 syntax (that is without using some 3rd party gem).
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How to scale down a range of numbers with a known min and max value
So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find t...
Iteration ng-repeat only X times in AngularJs
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David LinDavid Lin
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How to calculate an angle from three points? [closed]
...* P13))
where P12 is the length of the segment from P1 to P2, calculated by
sqrt((P1x -
P2x)2 +
(P1y -
P2y)2)
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edited Aug 25 '16 at 13:45
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What does {0} mean when initializing an object?
When {0} is used to initialize an object, what does it mean? I can't find any references to {0} anywhere, and because of the curly braces Google searches are not helpful.
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Javascript: best Singleton pattern [duplicate]
... // ...
}
}
console.log(new Singleton() === new Singleton());
Best solution found:
http://code.google.com/p/jslibs/wiki/JavascriptTips#Singleton_pattern
function MySingletonClass () {
if (arguments.callee._singletonInstance) {
return arguments.callee._singletonInstance;
}
a...
SQL Server Management Studio, how to get execution time down to milliseconds
When I submit a batch (e.g., perform a query) in SSMS, I see the time it took to execute in the status bar. Is it possible to configure SSMS to show the query time with millisecond resolution?
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