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Is there any difference between GROUP BY and DISTINCT
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Here are the most important operations:
FROM (including JOIN, APPLY, etc.)
WHERE
GROUP BY (can remove duplicates)
Aggregations
HAVING
Window functions
SELECT
DISTINCT (can remove duplicates)
UNION, INTERSECT, EXCEPT (can remove duplicates)
ORDER BY
OFFSET
LIMIT
As you can see, the logical or...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
...o perform it's own thread initialization (setting up thread local storage, etc.).
In practice, this means that CreateThread() should pretty much never be used directly by your code.
The MSDN documents for _beginthread()/_beginthreadex() have quite a bit of detail on the differences - one of the mo...
Delete text in between HTML tags in vim?
...y repeated at (or it) to progressively select surrounding tags . (Or v2at, etc). Then d to delete (etc).
– Joe Freeman
Feb 16 '17 at 17:09
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Make a Bash alias that takes a parameter?
...h() { mv "$@" ~/.Trash; }
That's it! You can use parameters $1, $2, $3, etc, or just stuff them all with $@
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Convert HTML + CSS to PDF [closed]
...it that way so our clients didn't have to installed exe's on their servers etc and works cross platform. I definitely rate WKHTMLTOPDF if you are building your own service.
– eagle779
Apr 9 '14 at 1:08
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How can I increment a char?
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I came from PHP, where you can increment char (A to B, Z to AA, AA to AB etc.) using ++ operator. I made a simple function which does the same in Python. You can also change list of chars to whatever (lowercase, uppercase, etc.) is your need.
# Increment char (a -> b, az -> ba)
def inc_char...
Enable Vim Syntax Highlighting By Default
... of basic stuff for you automatically (syntax, search highlighting, backup etc). You can then tweak it based on your needs.
– oyenamit
Jun 30 '12 at 14:51
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Difference between exit(0) and exit(1) in Python
...means a successful exit.
This is useful for other programs, shell, caller etc. to know what happened with your program and proceed accordingly.
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How to output messages to the Eclipse console when developing for Android
...methods depending on the severity of the message (error, verbose, warning, etc..).
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What are the dark corners of Vim your mom never told you about? [closed]
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And also note that '!' is like 'y', 'd', 'c' etc. i.e. you can do: !!, number!!, !motion (e.g. !Gshell_command<cr> replace from current line to end of file ('G') with output of shell_command).
– aqn
Apr 26 '13 at 20:52
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