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Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
...s not seem to take advantage of this basic optimization method (you might call this common subquery elimination).
Temporary tables are a different matter, because you are providing more guidance on how the query should be run. One major difference is that the optimizer can use statistics from the ...
How can I make an svg scale with its parent container?
...the element should have a width of 100%, but a height of 50px, it will actually only scale up to the height of 50px (unless you have a very narrow window):
<svg width="100%" height="50px" viewBox="0 0 20 10">
<polygon fill=red stroke-width=0
points="0,10 20,10 10,0" />...
Use latest version of Internet Explorer in the webbrowser control
...er Emulation , but how is it possible to use the latest version of the installed Internet Explorer in a webbrowser control?
...
C# switch statement limitations - why?
...a big if-else statement.
Each case must be unique and evaluated
statically. The switch statement does
a constant time branch regardless of
how many cases you have. The if-else
statement evaluates each condition
until it finds one that is true.
In fact, the C# switch statement is n...
NTFS performance and large volumes of files and directories
...n a child that's a folder and a child that's a file. The only difference really is the content of that child is either the child's folder index or the child's file data. Note: I am simplifying this somewhat but this gets the point across.
The index file will get fragmented. When it gets too fragment...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...n Ruby Koans and I was struck by the following Ruby quirk that I found really unexplainable:
10 Answers
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Explaining Apache ZooKeeper
...ersisted data is distributed between multiple nodes (this set of nodes is called an "ensemble") and one client connects to any of them (i.e., a specific "server"), migrating if one node fails; as long as a strict majority of nodes are working, the ensemble of ZooKeeper nodes is alive. In particular,...
Handle file download from ajax post
...ent). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client to download it? I've read a number of similar threads here but none of them provide the answer I'm looking for.
...
How to use an existing database with an Android application [duplicate]
...th();
which will give us the full path to the database file and works on all Android versions
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How to obtain the start time and end time of a day?
...es the first moment of the day as seen on that date in that time zone. Not all days start at 00:00!
ZoneId.of( "Asia/Tokyo" )
) // Returns a `ZonedDateTime` object.
Start of day
Get the full length of the today as seen in a time zone.
Using Half-Open approach, whe...