SQL Server 2005更新与查询表查询

Question

我有两个表;

技术查找表

OSID OSValue 

1  UNIX    
2  ORACLE    
3  .NET 
4  SQL  
5  SAP 

------------------ 

员工技术

empID OSID 

34  1 
37  2 
45  2 
34  4 
45  6 

员工ID号37是不使用Oracle。他转移到SAP。那就是OSID应该在第二个表中从2更新到5。

我有了技术和员工ID瓦莱斯一个临时表

请帮我 - 编写连接两个以上表的查询 - 查找SAP技术的ID，并更新第二带有该ID的表格。

Update emp 
Set emp.OSID = (Select OSID from technologylookup where OSValue = tmptbl.technologyname) 
FROM employee_tech emp INNER JOIN #Temptbl tmptbl ON emp.emp_id = tmptbl.emp_id 

Answer 1

加入您的查找表，临时表，然后从该表

Update emp 
    Set emp.OSID = tl.OSID 
FROM employee_tech emp 
INNER JOIN #Temptbl tmptbl 
    ON emp.emp_id = tmptbl.emp_id 
INNER JOIN technologylookup tl 
    ON tl.OSValue COLLATE DATABASE_DEFAULT = tmptbl.technologyname 

Answer 2

从我脑袋里的，未经测试的更新与ID的employee_tech表：

update employee_tech 
set osid = t.osid 
from #Temptbl tmp 
inner join employee_tech e on e.emp_id = tmp.emp_id 
inner join technologylookup t on t.osvalue = tmp.technologyname 

Answer 3

如果'临时表'中的'技术'等于ID，您可以像这样更新。

UPDATE employee_tech 
SET OSID = (SELECT technology FROM #Temptbl AS T INNER JOIN employee_tech AS E ON T.empID = E.empID)