小計查詢帶回更多結果然後可能

我目前正在運行以下查詢（請參閱下文）但是，當我運行此查詢時，活動用戶和掛起的用戶將帶回一個更大的結果，然後在數據庫中。小計查詢帶回更多結果然後可能

我只是想知道你是否可以闡明爲什麼並糾正我錯在哪裏的原因？

SELECT c.[Status], 
     c.CompanyId, 
     c.Name, 
     (SELECT count(DISTINCT usr.UserID) 
     FROM [ondemand.10cms.com].Security.[user] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = c.CompanyID) AS TotalUsers, 
     (SELECT sum (CASE 
         WHEN usr.Status = 2 THEN 1 
         ELSE 0 
        END) 
     FROM [ondemand.10cms.com].Security.[user] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = c.CompanyID) AS ActiveUsers, 
     (SELECT sum (CASE 
         WHEN usr.Status = 3 THEN 1 
         ELSE 0 
        END) 
     FROM [ondemand.10cms.com].Security.[User] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = c.CompanyID) AS SuspendedUsers 
FROM [ondemand.10cms.com].Company.Company c

來源

2013-06-27 Tim Pegden

檢查您的連接沒有通過選擇退出多餘行 –

在每一個你有兩個表的子查詢，一個被連接到外查詢，但有兩個內表之間沒有連接。所有這些子查詢都有點沒有必要，我會改寫爲一個簡單的查詢，像這樣：

SELECT 
    Company.[Status] 
    ,Company.CompanyId 
    ,Company.Name 
    ,COUNT(DISTINCT usr.UserID) AS TotalUsers 
    ,SUM(CASE WHEN usr.Status = 2 THEN 1 
      ELSE 0 
      END) AS ActiveUsers 
    ,SUM(CASE WHEN usr.Status = 3 THEN 1 
      ELSE 0 
      END) AS SuspendedUsers 
FROM [ondemand.10cms.com].Security.[user] usr 
    INNER JOIN [ondemand.10cms.com].Company.Company 
      ON usr.CompanyID = Company.CompanyID 
GROUP BY 
    Company.[Status] 
    ,Company.CompanyId 
    ,Company.Name

如果你只是WABT修復您所查詢的是那麼試試這個：

SELECT c.[Status], 
     c.CompanyId, 
     c.Name, 
     (SELECT count(DISTINCT usr.UserID) 
     FROM [ondemand.10cms.com].Security.[user] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = Company.CompanyID 
     WHERE usr.CompanyID = c.CompanyID) AS TotalUsers, 
     (SELECT sum (CASE 
         WHEN usr.Status = 2 THEN 1 
         ELSE 0 
        END) 
     FROM [ondemand.10cms.com].Security.[user] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = Company.CompanyID 
     WHERE usr.CompanyID = c.CompanyID) AS ActiveUsers, 
     (SELECT sum (CASE 
         WHEN usr.Status = 3 THEN 1 
         ELSE 0 
        END) 
     FROM [ondemand.10cms.com].Security.[User] usr 
       INNER JOIN [ondemand.10cms.com].Company.Company 
       ON usr.CompanyID = Company.CompanyID 
     WHERE usr.CompanyID = c.CompanyID) AS SuspendedUsers 
FROM [ondemand.10cms.com].Company.Company c

來源

2013-06-27 15:50:19

+1輕鬆地錯過了交叉連接。 –

不幸的是，這是可能的，因爲它是一個比這更大的查詢，這只是它的一個片段。在原始查詢期間，我還嘗試了一個類似的查詢，然後在原始查詢中斷開，並且不會返回必要的信息。 –

@Tim - 也爲您的查詢添加了一個直接修復。 –

我不知道你的數據（它可能會導致重複），但是你不能使用標準組而不使用子查詢？

Select 
    c.[Status], 
    c.CompanyId, 
    c.Name, 
    count(distinct usr.UserID) as TotalUsers, 
    sum(case when usr.Status = 2 then 1 else 0 end) as ActiveUsers, 
    sum(case when usr.Status = 3 then 1 else 0 end) as SuspendedUsers 
from [ondemand.10cms.com].Company.Company c 
inner join [ondemand.10cms.com].Security.[user] usr 
    on usr.CompanyID=c.CompanyID 
GROUP BY 
    c.[Status], 
    c.CompanyId, 
    c.Name

來源

2013-06-27 15:56:53

嘗試增加一組由CompanyId，讓我們知道該如何工作。

來源

2013-06-27 15:57:06

小計查詢帶回更多結果然後可能

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