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How to split a comma-separated value to columns
...ITH Split_Names (Value,Name, xmlname)
AS
(
SELECT Value,
Name,
CONVERT(XML,'<Names><name>'
+ REPLACE(Name,',', '</name><name>') + '</name></Names>') AS xmlname
FROM tblnames
)
SELECT Value,
xmlname.value('/Names[1]/name[1]','varcha...
Why does Python use 'magic methods'?
...those operations that
were generic for a group of types and
which were intended to work even for
objects that didn’t have methods at
all (e.g. tuples). It is also
convenient to have a function that can
readily be applied to an amorphous
collection of objects when you use the
functi...
SQL Call Stored Procedure for each Row without using a cursor
... MyTable has fields fld1 & fld2
Select @SQL = @SQL + 'exec myproc ' + convert(varchar(10),fld1) + ','
+ convert(varchar(10),fld2) + ';'
From MyTable
EXEC (@SQL)
Ok, so I would never put such code into production, but it does satisfy your requirements.
...
What is cardinality in MySQL?
...
Some columns are called high-cardinality columns because they have constraints in place (like unique) prohibiting you from putting the same value in every row.
Cardinality is a property which affects the ability to cluster, sort and search data. It is therefore an important measurement for the qu...
How can I convert byte size into a human-readable format in Java?
How can I convert byte size into a human-readable format in Java?
25 Answers
25
...
Using comparison operators in Scala's pattern matching system
...and a boolean expression after the pattern:
a match {
case 10 => println("ten")
case x if x > 10 => println("greater than ten")
case _ => println("less than ten")
}
Edit: Note that this is more than superficially different to putting an if after the =>, because a patter...
Expand a random range from 1–5 to 1–7
... a random real number selected uniformly from the range [0, 1], we need to convert it to a series of uniformly random numbers in the range [0, 6] to generate the output of rand7(). How do we do this? Just the reverse of what we just did -- we convert it to an infinitely precise decimal in base 7, ...
How do shift operators work in Java? [duplicate]
...n and returns a double. Sometimes, shifting is shorter/more efficient than converting an int to a double, calling Math.pow() and converting back to an int.) It's also useful for transforming an int value from signed (Java) to an unsigned equivalent (C/C++; Java doesn't have unsigned types, which is ...
Call int() function on every list element?
...int, numbers)
Note: in Python 3.x map returns a map object which you can convert to a list if you want:
numbers = list(map(int, numbers))
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Open document with default OS application in Python, both in Windows and Mac OS
...his.
To call them from Python, you can either use subprocess module or os.system().
Here are considerations on which package to use:
You can call them via os.system, which works, but...
Escaping: os.system only works with filenames that don't have any spaces or other shell metacharacters in th...