加入对其他一切价值，如果没有在表

Question

我有一个维度表

@dimensions 
Dateid Rep Mkt Prodgroup 
201111 002 S 001 
201111 002 R 001 
201111 002 S 002 
201111 002 R 002 
201111 002 S 003 
201111 002 R 003 
201111 002 S 004 
201111 002 R 004 
... 

我想这个表加入到包括百分比。

@percentageincrease 
Prodgroup Mkt Percent 
ALL   S 1.05 
ALL   R 1.06 
002   S 1.07 
002   R 1.08 
003   S 1.09 
003   R 1.10 

我想加入他们的Mkt和Prodgroup其中@dimensions.Prodgroup IN @percentageincrease.Prodgroup如果not in然后加入上的所有。所以输出表将

Dateid Rep Mkt Prodgroup Percent 
201111 002 S 001   1.05 // joined on ALL 
201111 002 R 001   1.06 // joined on ALL 
201111 002 S 002   1.07 // joined on 002 
201111 002 R 002   1.08 // joined on 002 
201111 002 S 003   1.09 // joined on 003 
201111 002 R 003   1.10 // joined on 003 
201111 002 S 004   1.05 // joined on ALL 
201111 002 R 004   1.06 // joined on ALL 
... 

正如我加盟条件我都试过

on case p.Prodgroup 
    when N'ALL' 
    then d.prodgrpid 
    else p.Prodgrpid = d.prodgrpid 
AND p.Mkt = d.Mkt 

，但它给了我

Dateid Rep Mkt Prodgroup Percent 
201111 002 S 001   1.05 
201111 002 R 001   1.06 
201111 002 S 002   1.07 
201111 002 R 002   1.08 
201111 002 S 002   1.05 //Joined on ALL 
201111 002 R 002   1.06 //Joined on ALL 
201111 002 S 003   1.09 
201111 002 R 003   1.10 
201111 002 S 003   1.05 //Joined on ALL 
201111 002 R 003   1.06 //Joined on ALL 
201111 002 S 004   1.05 
201111 002 R 004   1.06 
... 

凡分别在@percentageincrease表中的元组也加入全部条件。

这是作为一个更大的查询的一部分在SQL Server 2008上作为存储过程运行。

Answer 1

假设表结构

declare @dimensions table 
    (Dateid varchar(10), Rep varchar(10), Mkt varchar(10),Prodgroup varchar(10)) 
declare @percentageincrease table 
    (Prodgroup varchar(10), Mkt varchar(10), [Percent] decimal(9,5)) 

然后

select 
    d.*, 
    isnull(pinc.[Percent], pincall.[Percent]) 
from @dimensions d 
    left join @percentageincrease pinc 
     on d.Mkt = pinc.Mkt 
     and d.Prodgroup = pinc.Prodgroup 
    left join @percentageincrease pincall 
     on d.Mkt = pincall.Mkt 
     and pincall.Prodgroup ='all' 

Answer 2

试试这个：

select * from 
(
select d.*,p.[Percent] from 
dimensions d inner join percentageincrease p 
on d.Mkt = p.Mkt and d.Prodgroup = p.Prodgroup 

union 

select d.*,p.[Percent] from 
dimensions d join percentageincrease p 
on d.Mkt = p.Mkt and d.Prodgroup not in 
    (select distinct d.Prodgroup from dimensions d inner join percentageincrease p 
    on d.Mkt = p.Mkt and d.Prodgroup = p.Prodgroup) 
    where p.Prodgroup='ALL' 
) a 
order by a.Prodgroup