右外連接未返回預期行？

Question

我試圖使用聯接兩個表下面的SQL Server查詢返回的預測接口.NET數據表：

SELECT accounts.AccountID 
,accounts.Account 
,SUM(CASE 
     WHEN forecast.omonth = 1 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Jan 
,SUM(CASE 
     WHEN forecast.omonth = 2 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Feb 
,SUM(CASE 
     WHEN forecast.omonth = 3 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Mar 
,SUM(CASE 
     WHEN forecast.omonth = 4 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Apr 
,SUM(CASE 
     WHEN forecast.omonth = 5 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 May 
,SUM(CASE 
     WHEN forecast.omonth = 6 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Jun 
,SUM(CASE 
     WHEN forecast.omonth = 7 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Jul 
,SUM(CASE 
     WHEN forecast.omonth = 8 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Aug 
,SUM(CASE 
     WHEN forecast.omonth = 9 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Sep 
,SUM(CASE 
     WHEN forecast.omonth = 10 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Oct 
,SUM(CASE 
     WHEN forecast.omonth = 11 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Nov 
,SUM(CASE 
     WHEN forecast.omonth = 12 
      THEN forecast.ns1 
     ELSE 0 
     END)/1 Dec 
FROM accountForecast forecast 
RIGHT OUTER JOIN account_tree accounts ON forecast.AccountID = accounts.AccountID 
WHERE forecast.oYear = 2014 
AND accounts.AccountID in (35, 36, 37, 38, 39, 40, 41, 78, 79, 80, 81, 1, 82, 176) 
GROUP BY accounts.AccountID 
    ,accounts.Account 

的accountForecast表的結構如下：

該查詢應即使給定帳戶在accountForecast表中沒有條目，也會爲WHERE子句（35,36,37等）中的所有帳戶ID返回一行，在這種情況下查詢應該返回0。

我的查詢當前只返回一行，其中包含已插入accountForecast表中的AccountID。我連接不正確？我應該改變什麼？

編輯：我刪除了forecast.oYear = 2014 WHERE子句，它似乎按預期工作。但是，重要的是這個查詢需要輸入年份參數，因爲數據取決於它。有沒有辦法在指定年份的時候返回所有的賬戶行？

Answer 1

您的篩選排除了NULL值：

WHERE forecast.oYear = 2014 

Answer 2

這是很難理解您的實際存儲數據，但我假設所有的賬戶都保存在account_tree？如果是這樣，嘗試扭轉FROM和JOIN條款：

FROM account_tree accounts 
RIGHT OUTER JOIN accountForecast forecast ON forecast.AccountID = accounts.AccountID 
WHERE forecast.oYear = 2014 
AND accounts.AccountID in (35, 36, 37, 38, 39, 40, 41, 78, 79, 80, 81, 1, 82, 176) 
GROUP BY accounts.AccountID 
    ,accounts.Account