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Delete all Duplicate Rows except for One in MySQL? [duplicate]
...so included AND n1.id <> n2.id, it deleted every row in the table.
If you want to keep the row with the lowest id value:
DELETE n1 FROM names n1, names n2 WHERE n1.id > n2.id AND n1.name = n2.name
If you want to keep the row with the highest id value:
DELETE n1 FROM names n1, names n...
jQuery parent of a parent
...entation:
Closest works by first looking at the current element to see if it matches the specified expression, if so it just returns the element itself. If it doesn't match then it will continue to traverse up the document, parent by parent, until an element is found that matches the specified e...
Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning ent
.... Any time you want to add or delete something to the list you have to modify the contents of the list instead of assigning a new list.
To add children:
public void addChild(SonEntity aSon)
{
this.sonEntities.add(aSon);
}
To remove children:
public void removeChild(SonEntity aSon)
{
th...
grid controls for ASP.NET MVC? [closed]
If you are using ASP.NET MVC how are you doing grid display?
Rolled your own?
Got a library from somewhere?
12 Answers
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Android: Share plain text using intent (to all messaging apps)
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But I didn't understand what make the difference?? Just the outer body String??
– skgskg
Mar 30 '12 at 18:49
1
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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...t_method://$host$request_uri;
set $cache_bypass "1";
if ($arg_failover = "1") {
set $cache_bypass "0";
}
try_files $uri =404;
include fastcgi.conf;
fastcgi_pass php;
fastcgi_intercept_errors on;
fastcgi_next...
How to explicitly discard an out argument?
...word "dispose" in the question, which I suspect was just unfortunate - but if the out parameter is of a type which implements IDisposable, you should certainly call Dispose unless the method documentation explicitly states that receiving the value doesn't confer ownership. I can't remember ever see...
What is the need of JSF, when UI can be achieved with JavaScript libraries such as jQuery and Angula
...s a UI framework and provides some UI components. But how is it better or different from number of components that are available from jQueryUI, AngularJS, ExtJS, or even plain HTML, CSS and JavaScript.
...
SqlDataAdapter vs SqlDataReader
What are the differences between using SqlDataAdapter vs SqlDataReader for getting data from a DB?
5 Answers
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C++并发编程（中文版） - 文档下载 - 清泛网 - 专注C/C++及内核技术
...并发… 1
1.1.1 计算机系统的并发… 1
1.1.2 并发的方法… 3
1.2 为什么使用并发… 4
1.2.1 因划分重点而使用并发… 5
1.2.2 为了提高性能而使用并发… 5
1.2.3 什么时候不使用并发… 6
1.3 在C++中使用并发和多线程… 7
1.3.1 多线程...