大约有 12,000 项符合查询结果（耗时：0.0193秒） [XML]
SQL RANK() versus ROW_NUMBER()
... DISTINCT clause to work properly.
The reason for this is that logically, window functions are calculated before DISTINCT is applied.
All three functions in comparison
Using PostgreSQL / Sybase / SQL standard syntax (WINDOW clause):
SELECT
v,
ROW_NUMBER() OVER (window) row_number,
RANK() ...
How to assign name for a screen? [closed]
...g with screen within screen. For example C-a a n will move screen to a new window on the screen within screen." (ref: aperiodic.net/screen/quick_reference )
– Nate Ritter
Jul 8 '16 at 16:12
...
Copy all the lines to clipboard
...The problem with this approach is that it moves the cursor and scrolls the window around. Twice. The other answer has far fewer keystrokes and drawbacks :)
– sehe
Sep 13 '11 at 7:50
...
Multiple commands on a single line in a Windows batch file
...erflow.com%2fquestions%2f8922224%2fmultiple-commands-on-a-single-line-in-a-windows-batch-file%23new-answer', 'question_page');
}
);
Post as a guest
Name
...
Redirecting Output from within Batch file
...le
some_command ^| TEE.BAT [ -a ] filename
@ECHO OFF
:: Check Windows version
IF NOT "%OS%"=="Windows_NT" GOTO Syntax
:: Keep variables local
SETLOCAL
:: Check command line arguments
SET Append=0
IF /I [%1]==[-a] (
SET Append=1
SHIFT
)
IF [%1]==[] GOTO Syntax
IF NOT...
Allow Google Chrome to use XMLHttpRequest to load a URL from a local file
...
startup chrome with --disable-web-security
On Windows:
chrome.exe --disable-web-security
On Mac:
open /Applications/Google\ Chrome.app/ --args --disable-web-security
This will allow for cross-domain requests.
I'm not aware of if this also works for local files, but...
“Variable” variables in Javascript?
...ider that). It is possible to access some global variables dynamically via window, but that doesn't work for variables local to a function. Global variables that do not become a property of window are variables defined with let and const, and classes.
There is almost always a better solution than u...
Stop/Close webcam which is opened by navigator.getUserMedia
...ces.getUserMedia({audio:true,video:true})
.then(stream => {
window.localStream = stream;
})
.catch( (err) =>{
console.log(err);
});
// later you can do below
// stop both video and audio
localStream.getTracks().forEach( (track) => {
track.stop();
});
// stop ...
How to turn on line numbers in IDLE?
...
Version 3.8 or newer:
To show line numbers in the current window, go to Options and click Show Line Numbers.
To show them automatically, go to Options > Configure IDLE > General and check the Show line numbers in new windows box.
Version 3.7 or older:
Unfortunately there is no...
What are the ways to make an html link open a folder
...
Do you want to open a shared folder in Windows Explorer? You need to use a file: link, but there are caveats:
Internet Explorer will work if the link is a converted UNC path (file://server/share/folder/).
Firefox will work if the link is in its own mangled form ...