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SQL - Update multiple records in one query
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This is a MySQL solution, not Postgres or MSSQL.
– Rz Mk
Dec 23 '17 at 15:30
1
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Split views.py in several files
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It is ok if we delete the views.py in root directory?
– Roel
Jul 11 '16 at 2:21
7
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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...自己的操作系统，到最初Linux 内核0.01 版公布，以及从此如何艰难地一步一个脚印地在全世界hacker 的帮助下最后推出比较完善的1.0 版本这段时间的发展经过，也即对Linux 的早期发展历史进行详细介绍。
对于Linux的一般发...
jQuery dot in ID selector? [duplicate]
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Use the escaping rules from the jQuery selectors API as follows:
$('#root\\.SomeCoolThing')
From the docs:
To use any of the meta-characters (such as
!"#$%&'()*+,./:;<=>?@[\]^`{|}~) as a literal part of a name, it must
be escaped with with two backslashes: \\. For example...
Source unreachable when using the NuGet Package Manager Console
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I had to provide the comman along with the full url as Install-Package MySql.Data.Entity -Version 6.9.8 -Source http://www.nuget.org/api/v2
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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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Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
...You don't need sudo in /etc/rc.local because the commands there are run as root when the system boots.
Logs
Use the forever module to launch your Node.js with. It will make sure that it restarts if it ever crashes and it will redirect console logs to a file.
Launch on Boot
Add your Node.js start sc...
How can I troubleshoot my Perl CGI script?
... debugger; we can use the command line tool netcat (nc, saw that here: Perl如何remote debug?). So, first run the netcat listener in one terminal - where it will block and wait for connections on port 7234 (which will be our debug port):
$ nc -l 7234
Then, we'd want perl to start in debug mode w...
HTTP authentication logout via PHP
...cookie, with the persistence of state stored on the server in some manner (mysql, sqlite, flatfile, etc). This will require all requests to be evaluated, for instance, with PHP.
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How do you attach and detach from Docker's process?
...l+p + Ctrl+q to quit the container:
# docker exec -it 91262536f7c9 bash
root@91262536f7c9:/# ps -aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 18160 1908 ? Ss+ 04:03 0:00 /bin/bash
root 15 0.0 0.0 18164 1892 ? S...