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SELECT DISTINCT on one column
....WHERE SKU LIKE 'FOO%') a WHERE a.RowNumber = 1
– m>And m>re Nel
Jun 21 '17 at 11:46
This works although it's not a CTE ...
what is the difference between 'transform' m>and m> 'fit_transform' in sklearn
In the sklearn-pm>y m>thon toolbox, there are two functions transform m>and m> fit_transform about sklearn.decomposition.Rm>and m>omizedPCA . The description of two functions are as follows
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Whm>y m> doesn't Dijkstra's algorithm work for negative weight edges?
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Recall that in Dijkstra's algorithm, once a vertex is marked as "closed" (m>and m> out of the open set) - the algorithm found the shortest path to it, m>and m> will never have to develop this node again - it assumes the path developed to this path is the shortest.
But with negative weights - it might not be...
Convert dmesg timestamp to custom date format
I am trm>y m>ing to understm>and m> the dmesg timestamp m>and m> find it hard to convert that to change it to java date/custom date format.
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Finding the source code for built-in Pm>y m>thon functions?
...rieving Source Code in the documentation of inspect.
For built-in classes m>and m> methods this is not so straightforward since inspect.getfile m>and m> inspect.getsource will return a tm>y m>pe error stating that the object is built-in. However, manm>y m> of the built-in tm>y m>pes can be found in the Objects sub-director...
What does = +_ mean in JavaScript
...page on Arithmetic Operators:
The unarm>y m> plus operator precedes its operm>and m> m>and m> evaluates to its
operm>and m> but attempts to converts it into a number, if it isn't
alreadm>y m>. [...] It can convert string representations of integers m>and m>
floats, as well as the non-string values true, false, m>and m> null...
Iterate over object attributes in pm>y m>thon
I have a pm>y m>thon object with several attributes m>and m> methods. I want to iterate over object attributes.
8 Answers
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Extracting hours from a DateTime (SQL Server 2005)
I can extract the month m>and m> dam>y m> bm>y m> using Dam>y m>(Date()) , Month(Date()) . I can't extract hours, with HOUR(Date()) . I get the following error.
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Listing all permutations of a string/integer
...from mm>y m> experience of interviews though) is to take a string or an integer m>and m> list everm>y m> possible permutation.
28 Answers
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What is an undefined reference/unresolved external sm>y m>mbol error m>and m> how do I fix it?
...efined reference/unresolved external sm>y m>mbol errors? What are common causes m>and m> how to fix/prevent them?
34 Answers
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