SQL - 加入兩個查詢高效地協同

Question

我有查詢不同的表，並返回類似領域的兩個SQL查詢：

User - Role - Category - Points 

和

User - Role - Category - Target 

我的查詢是這樣的：

select 
    acs.UserID, 
    acs.RoleID, 
    acs.CategoryID, 
    sum(acs.Points) 
from acs 

和

select 
    tb.UserID, 
    tb.RoleID, 
    tb.CategoryID, 
    sum(
     (
      (DATEDIFF(dd, (case when @start >= tb.StartDate then @start else tb.StartDate end), (case when @end <= tb.EndDate then @end else tb.EndDate end)) + 1) 
     ) * tb.dailyMed 
    ) as Target 
from tb 

我想什麼直到結束是這樣的：

User - Role - Category - Points - Target 

每個單獨的查詢需要不到1秒的運行，但是當我嘗試使用內把它們結合起來加入吧接管跑3分鐘。

我希望有這樣做的更有效的方式，但我似乎無法找到一個。

*編輯 我內在的加入看起來像這樣

select 
    acs.UserID, 
    acs.RoleID, 
    acs.CategoryID, 
    sum(acs.Points), 
    t.Target 
from 
    dbo.ActualCacheSale acs 
     inner join 
      (select 
       tb.UserID, 
       tb.RoleID, 
       tb.CategoryID, 
       sum(
        (
         (DATEDIFF(dd, (case when @start >= tb.StartDate then @start else tb.StartDate end), (case when @end <= tb.EndDate then @end else tb.EndDate end)) + 1) 
        ) * tb.dailyMed 
       ) as Target 
      from 
       dbo.TargetBucket tb 
      ) t on 
       t.UserID = acs.UserID and 
       t.RoleID = acs.RoleID and 
       t.CategoryID = acs.CategoryID 

Answer 1

嘗試

select 
aa.UserId, 
aa.Roleid, 
aa.CategoryId 
Sum(aa.Points) as Points, 
Sum(aa.Target) as Target 
from 
(
select 
    acs.UserID, 
    acs.RoleID, 
    acs.CategoryID, 
    sum(acs.Points) as Points 
    null as target 
from acs 

union all 

select 
    tb.UserID, 
    tb.RoleID, 
    tb.CategoryID, 
    0 as points 
    sum(
     (
     (DATEDIFF(dd, (case when @start >= tb.StartDate then @start else tb.StartDatee end),  
    (case when @end <= tb.EndDate then @end else tb.EndDate end)) + 1) 
    ) * tb.dailyMed 
    ) as Target 
from tb) as aa 
group by 
aa.UserId, 
aa.Roleid, 
aa.CategoryId 

Answer 2

你可以發佈你正在使用內部聯接查詢？通常，如果連接列上有有用的索引，則查詢應該執行得很好。

如果不是一個很好的選擇是創建兩個臨時表，1存儲每個查詢的結果。然後在連接列上的臨時表上創建索引。使用臨時表運行最終查詢。

Answer 3

也許我失去了一些東西，但我不知道你是如何得到一筆不進行分組成一個聚合。不管怎麼說，這是我拿 - 希望我沒有錯過任何東西：

SELECT P.UserID , 
     P.RoleID , 
     P.CategoryID , 
     P.Points , 
     T.Target 
FROM (SELECT acs.UserID , 
        acs.RoleID , 
        acs.CategoryID , 
        SUM(acs.Points) Points 
      FROM  acs 
      GROUP BY acs.UserID , 
        acs.RoleID , 
        acs.CategoryID 
     ) P 
     CROSS APPLY (SELECT tb.UserID , 
           tb.RoleID , 
           tb.CategoryID , 
           SUM(((DATEDIFF(dd, (CASE WHEN @start >= tb.StartDate THEN @start 
                  ELSE tb.StartDate 
                 END), (CASE WHEN @end <= tb.EndDate THEN @end 
                    ELSE tb.EndDate 
                   END)) + 1)) * tb.dailyMed) AS Target 
         FROM  TB 
         WHERE  TB.UserID = P.UserID 
           AND TB.RoleID = P.RoleID 
           AND TB.CategoryID = P.CategoryID 
         GROUP BY tb.UserID , 
           tb.RoleID , 
           tb.CategoryID 
        ) T