CASE
在数据库中,对数据进行比对,
两种用法
第一种,不对任何列进行case 条件判断
SELECT Sid,English AS en, CASE WHEN English >=60 THEN '及格' WHEN English 60 THEN '英语及格' WHEN Math >60 THE...
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数据库 时间:
2014-09-04 16:52:29
阅读次数:
286
在执行之前:merge into UserInfo u using chartinfo c on u.UserId=c.UserId when matched and u.UserName=c.UserName then update set u.lastUpdate=c.LastUpdate wh...
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数据库 时间:
2014-09-04 13:14:59
阅读次数:
187
原文地址:http://www.cplusplus.com/reference/thread/thread/join/
public member function
std::thread::join
void join();
Join thread
The function returns when the thread execution ha...
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编程语言 时间:
2014-09-04 11:50:40
阅读次数:
217
适用sqlServer,oracleCASEWHEN 条件1 THEN 结果1WHEN 条件2 THEN 结果2WHEN 条件3 THEN 结果3WHEN 条件4 THEN 结果4.........WHEN 条件N THEN 结果NELSE 结果XENDCase具有两种格式。简单Case函数和Cas...
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数据库 时间:
2014-09-04 09:37:27
阅读次数:
303
http://blogs.msdn.com/b/ramaprasanna/archive/2009/09/16/invalid-object-name-sys-configurations-microsoft-sql-server-error-208.aspx----------When you u...
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数据库 时间:
2014-09-04 08:25:27
阅读次数:
220
These two terms in the Predicate Information section indicate when the data source is reduced. Simply, access means only retrieve those records meetin...
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数据库 时间:
2014-09-03 19:37:37
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351
So, to all exposed surface of the tile and painted. Therefore, we have compiled a list of mistakes that people make when choosing a company for their ...
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其他好文 时间:
2014-09-03 13:01:56
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237
Citrix Xen sucks!When u try to install linux stuff on its Xen servers, u will get an error complaining errors like below:'......the bootloader for thi...
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系统相关 时间:
2014-09-03 12:58:56
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270
Notice there might be a bug in .NET4.5 's dynamic data . Because when I created a DDS via VS2013 under .NET4.5 , I always get following error : System...
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其他好文 时间:
2014-09-03 10:59:26
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219
Arrays in Swift are value types. That means thatdatais copied when passed into yourexchangemethod, but you are trying to modify the copy to affect the...
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编程语言 时间:
2014-09-02 21:07:15
阅读次数:
266