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SQL WITH clause example [duplicate]
...of the SQL WITH clause when using a single sub-query alias.
WITH <alias_name> AS (sql_subquery_statement)
SELECT column_list FROM <alias_name>[,table_name]
[WHERE <join_condition>]
When using multiple sub-query aliases, the syntax is as follows.
WITH <alias_name_A> AS (sq...
Rename a table in MySQL
...
The mysql query for rename table is
Rename Table old_name TO new_name
In your query, you've used group which one of the keywords in MySQL.
Try to avoid mysql keywords for name while creating table, field name and so on.
...
Append file contents to the bottom of existing file in Bash [duplicate]
...
For single string, use echo like this echo "export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_112" >> ~/.bashrc
– shellbye
Jan 3 '17 at 8:36
...
How to go back to previous opened file in Vim? [duplicate]
... the alternate
file name. It can be used with "#" on the command line |:_#| and you can use
the |CTRL-^| command to toggle between the current and the alternate file.
However, the alternate file name is not changed when |:keepalt| is used.
An alternate file name is remembered for each windo...
Count number of files within a directory in Linux? [closed]
...ipe: du --inodes [root@cs-1-server-01 million]# du --inodes 1000001 ./vdb.1_1.dir 1000003 . [root@cs-1-server-01 million]#
– Venfah Nazir
Jan 9 at 7:28
...
ON_COMMAND_RANGE 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
ON_COMMAND_RANGE 用法申明消息宏 + 回调函数模型，其他没什么好解释的。BEGIN_MESSAGE_MAP(CxxDialog, CDialog)
ON_COMMAND_RANGE(IDC_BUTTON_1, IDC_BUTTON_ALL, OnButtonClick)
END_MESSAGE_MAP()
afx_msg void OnButtonClick(UINT nID);ON_COMMAND_RANGE, MFC
CDHtmlDialog的基本使用（C++调用JS函数的实现） - C/C++ - 清泛网 - 专注IT技能提升
CDHtmlDialog的基本使用（C++调用JS函数的实现）CDHtmlDialog_cpp_call_js_interactiveCDHtmlDialog C++ JS《CDHtmlDialog的基本使用（JS调用C++函数的实现）》本文基于以上文章，在其代码基础上拓展：一、在主对话框上添加一个C++按钮，步骤如下：....
Linux Shell中 if else及大于、小于、等于逻辑表达式写法 - C/C++ - 清泛网...
...断文件是否存在
YACCESS=`date -d yesterday +%Y%m%d`
FILE="access_$YACCESS.log.tgz"
cd /data/nginx/logs
if [ -f "$FILE" ];then
echo "OK"
else
echo "error $FILE" > error.log
mail -s "$FILE backup fail" test@tsingfun.com <error.log
fi
2、清除相关文件，并按时间段记录...
ATL COM开发入门（一）（JS调用ActiveX/COM组件） - C/C++ - 清泛网 - 专注C/C++及内核技术
...R* pStr1, BSTR* pStr2, BSTR* pRetStr)
{
CString retStr;
retStr.Format(_T("%s%s"), *pStr1, *pStr2);
*pRetStr = retStr.AllocSysString();
return S_OK;
}
四、写一个简单的html网页进行测试：
<HTML>
<HEAD>
<TITLE>COM接口测试页</TITLE>
<script type="text/javascript">...
ATL COM开发入门（二）（ActiveX/COM组件回调JS） - C/C++ - 清泛网 - 专注C/C++及内核技术
...patch;
UINT nRet = SetTimer(NULL, // handle to main window
ID_TIMER, // 定时器标识
1000, // 1 秒间隔
(TIMERPROC)TimerProc); // 回调函数
return S_OK;
}
TimerProc回调函数：
IDispatch* gIDispatch = NULL;
#define ID_TIMER 1
...