大约有 7,000 项符合查询结果（耗时：0.0147秒） [XML]
ORDER BY the IN value list
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Just because it is so difficult to find and it has to be spread: in mySQL this can be done much simpler, but I don't know if it works in other SQL.
SELECT * FROM `comments`
WHERE `comments`.`id` IN ('12','5','3','17')
ORDER BY FIELD(`comments`.`id`,'12','5','3','17')
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How do I create a crontab through a script
...moving existing crontab entries and also I needed to use a different user (root) so I used the following to maintain the existing entries: echo -e "$(sudo crontab -u root -l)\n* * * * * echo hello > /home/danny/temp.log 2>&1" | sudo crontab -u root - Hopefully this helps someone
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What happens if you don't commit a transaction to a database (say, SQL Server)?
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...such as mySQL's MyISAM, which doesn't support transactions, sure.
– Piskvor left the building
Jul 12 '19 at 9:23
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Where does npm install packages?
...y. It will then typically be found in /usr/local/lib/node_modules (Use npm root -g to check where.)
npm install pm2 - pm2 will be installed locally. It will then typically be found in the local directory in /node_modules
sh...
Set Background color programmatically [duplicate]
...ry to use following code
View someView = findViewById(R.id.screen);
View root = someView.getRootView();
root.setBackgroundColor(getResources().getColor(color.white));
Edit::
getResources.getColor() is deprecated so, use like below
root.setBackgroundColor(ContextCompat.getColor(this, R.color....
How to install python modules without root access?
...asy_install to install python packages in your home directory even without root access. There's a standard way to do this using site.USER_BASE which defaults to something like $HOME/.local or $HOME/Library/Python/2.7/bin and is included by default on the PYTHONPATH
To do this, create a .pydistutils...
How to get root view controller?
I need an instance of root view controller.
7 Answers
7
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How to filter SQL results in a has-many-through relation
...on easier to extend to n clubs and that avoids INTERSECT (not available in MySQL) and IN (as performance of this sucks in MySQL)
SELECT s.id,
s.name
FROM student s
join student_club sc
ON s.id = sc.student_id
WHERE sc.club_id IN ( 30, 50 )
GROUP BY s.id,
s.name
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How do I get the APK of an installed app without root access?
I'm trying to extract the APK file of an installed Android app WITHOUT root permissions.
11 Answers
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Performing Breadth First Search recursively
...vels, the results will be same as a BFS.
public void PrintLevelNodes(Tree root, int level) {
if (root != null) {
if (level == 0) {
Console.Write(root.Data);
return;
}
PrintLevelNodes(root.Left, level - 1);
PrintLevelNodes(root.Right, level...