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SQL Server IN vs. EXISTS Performance
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I've done some testing on SQL Server 2005 and 2008, and on both the EXISTS and the IN come back with the exact same actual execution plan, as other have stated. The Optimizer is optimal. :)
Something to be aware of though, EXISTS, IN, and ...
WCF ServiceHost access rights
...seful when you need to host services inside visual studio for debugging or testing. Don't use this on production...
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How to create a new database using SQLAlchemy?
...per PostgreSQL command for it.
>>> conn.execute("create database test")
>>> conn.close()
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Controlling maven final name of jar artifact
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A bit of an update, 2.4 is the latest version. Still works fine though.
– PaulBGD
Aug 17 '14 at 20:21
1
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How to remove the first character of string in PHP?
...r[0] = null;
// replaced by �, but ok for echo
Exec time for 1.000.000 tests : 0.39602184295654 sec
Remove the first letter with substr()
$str = "hello";
$str = substr($str, 1);
Exec time for 1.000.000 tests : 5.153294801712 sec
Remove the first letter with ltrim()
$str = "hello";
$str...
Get just the filename from a path in a Bash script [duplicate]
...nvenient. Those are alternative commands:
FILE_PATH="/opt/datastores/sda2/test.old.img"
echo "$FILE_PATH" | sed "s/.*\///"
This returns test.old.img like basename.
This is salt filename without extension:
echo "$FILE_PATH" | sed -r "s/.+\/(.+)\..+/\1/"
It returns test.old.
And following stat...
C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...r function, then you can initialize it to any value you want.
static void test(DateTime? dt = null)
{
if (dt == null)
{
dt = new DateTime(1981, 03, 01);
}
//...
}
You can call it with a named parameter like this:
test(dt: new DateTime(2010, 03, 01));
And with the defau...
How can I pass a parameter to a setTimeout() callback?
...(function() { console.write(i); }, 0); } this will log "100" a 100 times (tested on FF). Current answer helps avoiding this.
– root
Dec 14 '12 at 17:21
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Deleting lines from one file which are in another file
... 1 2 100000); do echo "$i"; done|sort --random-sort > file2
$ time ruby test.rb > ruby.test
real 0m0.639s
user 0m0.554s
sys 0m0.021s
$time sort file1 file2|uniq -u > sort.test
real 0m2.311s
user 0m1.959s
sys 0m0.040s
$ diff <(sort -n ruby.test) <(sort -n sort....
Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
...dth/offsetHeight.
Then, to prove the theory right or wrong, you need some tests.
That's what I did here: https://github.com/lingtalfi/dimensions-cheatsheet
It's testing for chrome53, ff49, safari9, edge13 and ie11.
The results of the tests prove that the theory is generally right.
For the tests, ...