大约有 2,800 项符合查询结果（耗时：0.0190秒） [XML]
How to do a LIKE query in Arel and Rails?
...ers = User.arel_table
User.where(users[:name].matches("%#{user_name}%"))
PS:
users = User.arel_table
query_string = "%#{params[query]}%"
param_matches_string = ->(param){
users[param].matches(query_string)
}
User.where(param_matches_string.(:name)\
.or(param_matche...
How to calculate the CPU usage of a process by PID in Linux from C?
...
@advocate: It's a pseudo-file which implements an interface to retrieve process execution statistics from the kernel.
– caf
May 7 '12 at 1:49
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How to add a WiX custom action that happens only on uninstall (via MSI)?
...
EDIT: Perhaps look at the answer currently immediately below.
This topic has been a headache for long time. I finally figured it out.
There are some solutions online, but none of them really works. And of course there is no documenta...
How can you profile a Python script?
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For visualizing cProfile dumps (created by python -m cProfile -o <out.profile> <script>), RunSnakeRun, invoked as runsnake <out.profile> is invaluable.
– Lily Chung
May 5 '14 at 1:33
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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...符集
SQL> select userenv('language') from dual;
SQL> select * from props$ where name='NLS_CHARACTERSET';
SQL> select * from nls_database_parameters;
启动数据库企业管理器 oracle 用户
emctl start dbconsole
相关问题
ora-12545
[oracle@dmjyrac2 ~]$ sqlplus / as sysdba
...
How to verify that method was NOT called in Moq?
...;
calc.PayPensionContribution(person);
mockPensionService.Verify(ps => ps.Pay(It.IsAny<decimal>()), Times.Never);
}
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How do I convert an array object to a string in PowerShell?
...t piping the array to the Out-String cmdlet works well too.
For example:
PS C:\> $a | out-string
This
Is
a
cat
It depends on your end goal as to which method is the best to use.
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imp...
What does `kill -0 $pid` in a shell script do?
... are concerned about defunct / zombie process status, then you need to use ps, preferably with the --no-headers switch.
#!/bin/ksh
function trim ()
{
echo -n "$1" | tr -d [:space:]
}
function getProcessStatus ()
{
trim $(ps -p $1 -o stat --no-headers)
}
function isZombie ()
{
typeset...
brew install mysql on macOS
...rew Way as Sedorner wrote above:
Remove MySQL completely per The Tech Lab
ps -ax | grep mysql
stop and kill any MySQL processes
sudo rm /usr/local/mysql
sudo rm -rf /usr/local/var/mysql
sudo rm -rf /usr/local/mysql*
sudo rm ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
sudo rm -rf /Library/Start...
How to perform a mysqldump without a password prompt?
...assword.
Very handy for scripting mysql & mysqldump commands.
The steps to achieve this can be found in this link.
Alternatively, you could use the following command:
mysqldump -u [user name] -p[password] [database name] > [dump file]
but be aware that it is inherently insecure, as the ...