SQL Server 2012：將兩行合並為一行

Question

我在桌子上有這個

ID     Routing      
01     WFM
01     ESCALATE
02     WFM
02     ESCALATE

我想顯示（SQL SELECT查詢）如下所示

ID     Routing1  Routing2      
01     WFM        ESCALATE
02     WFM        ESCALATE

Answer 1

select a.id,a.routing as routing1,b.routing as routing2 
from table1 as a join table1 as b 
on
a.id=b.id

這可以是您的基本查詢。

實現你的結果。 你可以用類似的東西。

select id,routing1,routing2 
from (select a.id,a.routing as routing1,b.routing as routing2 
from table1 as a join table1 as b 
on
a.id=b.id)
where routing1 != routing2;

我想你可以將a.routing！= b.routing添加到基本查詢中，而不是處理第二個查詢

Answer 2

 select id, max(routing) as routing1, 
            (select min(routing) from route r2 where r2.id = r1.id) as routing2
    from route r1
    group by id

只有當你有2條帶有sameid的記錄時，這才能完美運行。