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LISTAGG in Oracle to return distinct values
...t useful:
with test_data as
(
select 'A' as col1, 'T_a1' as col2, '123' as col3 from dual
union select 'A', 'T_a1', '456' from dual
union select 'A', 'T_a1', '789' from dual
union select 'A', 'T_a2', '123' from dual
union select 'A', 'T_a2', '456' from dual
union select 'A', 'T_a2', '111' fr...
How to determine whether an object has a given property in JavaScript
...throw new Error("IllegalArgumentException");
}
alert("ok");
}
f({req1: 123}); // error
f({req1: 123, req2: 456}); // ok
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应用程序无法正常启动0xc0150002 解决方式 - 操作系统(内核) - 清泛网 - 专...
应用程序无法正常启动0xc0150002 解决方式应用程序无法正常启动0xc0150002。方案一: 在项目的“属性|配置属性|链接器|常规”中的“启用增量链接”选择“否”。此方法阻断了问题产生的源头,其每次生成exe文件时都直接嵌...
Windows2003 server 域的无缝切换及重新安装 - 操作系统(内核) - 清泛网 - ...
Windows2003 server 域的无缝切换及重新安装故障描述:Windows server 2003主域中毒杀毒后总是提示内存不够,及注册表报错分析域故障和修复注册表这个活基本上不是人干的,另辟蹊径...故障描述: Windows server 2003 主域中毒杀毒后 总是...
一体化的Linux系统性能和使用活动监控工具–Sysstat - 更多技术 - 清泛网 -...
...在即将发表的一篇文章里,我将会给大家展示一些实际的操作案例和sysstat命令的用法。敬请期待。同时也欢迎大家在文章下面的评论部分留下你的想法。
性能 工具 系统 Sysstat
C/C++中退出线程的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...有C++对象均将通过它们的撤消函数正确地撤消。
(2)操作系统将正确地释放线程堆栈使用的内存。
(3)系统将线程的退出代码(在线程的内核对象中维护)设置为线程函数的返回值。
(4)系统将递减线程内核对象的使用...
How to format numbers as currency string?
... id="x">(press button to get output)</p>
Use it like so:
(123456789.12345).formatMoney(2, ".", ",");
If you're always going to use '.' and ',', you can leave them off your method call, and the method will default them for you.
(123456789.12345).formatMoney(2);
If your culture h...
HttpServletRequest to complete URL
...rvlet/MyServlet
String pathInfo = req.getPathInfo(); // /a/b;c=123
String queryString = req.getQueryString(); // d=789
// Reconstruct original requesting URL
StringBuilder url = new StringBuilder();
url.append(scheme).append("://").append(serverName);
if (s...
Capturing TAB key in text box [closed]
...swered Sep 9 '10 at 6:14
chintan123chintan123
19322 silver badges1010 bronze badges
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What is the main difference between PATCH and PUT request?
...rtion of the record, use PUT (user controls what gets updated)
PUT /users/123/email
new.email@example.org
PATCH =>
If user can only update a partial record, say just an email address (application controls what can be updated), use PATCH.
PATCH /users/123
[description of changes]
Why Pat...