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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...置的SORT命令可以达到事半功倍的效果，实际上它类似于SQL中的JOIN：
redis> SORT usr:123:msg GET msg:*->title
1) "title1"
2) "title2"
3) "title3"
redis> SORT usr:123:msg GET msg:*->content
1) "content1"
2) "content2"
3) "content3"
SORT的缺点是它只能GET出字符...
Dependency Inject (DI) “friendly” library
... public Service()
{
}
public void DoSomething()
{
SqlConnection connection = new SqlConnection("some connection string");
WindowsIdentity identity = WindowsIdentity.GetCurrent();
// Do something with connection and identity variables
}
}
You write it li...
Table is marked as crashed and should be repaired
...
Run this from your server's command line:
mysqlcheck --repair --all-databases
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Sqlite or MySql? How to decide? [closed]
...
Their feature sets are not at all the same. Sqlite is an embedded database which has no network capabilities (unless you add them). So you can't use it on a network.
If you need
Network access - for example accessing from another machine;
Any real degree of concurr...
UPDATE and REPLACE part of a string
... like
"32-1000"
Now you want to replace all
"32-"
With
"14-"
The SQL query you have to run is
Update Products Set Code = replace(Code, '32-', '14-') Where ...(Put your where statement in here)
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How to delete all records from table in sqlite with Android?
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You missed a space: db.execSQL("delete * from " + TABLE_NAME);
Also there is no need to even include *, the correct query is:
db.execSQL("delete from "+ TABLE_NAME);
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ASP.NET MVC 5 vs. AngularJS / ASP.NET WebAPI [closed]
...fer pure HTML views, an entirely angular front end along with a Web API/EF/SQL Server back end, basically no Razor. Razor is an abstraction to help programmers render HTML, these days everyone's coming to the conclusion that removing these abstractions is a better idea, hence the evolution of ASP.NE...
How do I URl encode something in Node.js?
...nts;--")
//>> "Robert')%3B%20DROP%20TABLE%20Students%3B--"
Passing SQL around in a query string might not be a good plan though,
see this one
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HTML+CSS: How to force div contents to stay in one line?
...what you do, and depending on the system (Oracle Designer: Oracle 11g - PL/SQL), divs will always go to the next line, in which case you should use the span tag instead.
This worked wonders for me.
<span float: left; white-space: nowrap; overflow: hidden; onmouseover="rollOverImageSectionFiveTh...
How are people unit testing with Entity Framework 6, should you bother?
...be able to mock your DAL so your BLL can be tested independently of EF and SQL. These are your unit tests. Next you need to design your Integration Tests to prove your DAL, in my opinion these are every bit as important.
There are a couple of things to consider:
Your database needs to be in a kno...