加入來自兩個表的數據

Question

在我的項目中，公司的客戶打電話詢問他們的設備。每次撥打電話時，都會保存在數據庫中。現在我需要知道有多少電話沒有公司獲得某一年的每個月，所以我已經寫了請求：

SELECT COUNT(EveLngId) FROM T_Evenement 
where EveLngDosId = 1062 
And EveLngBibId = 268 
And EveTinSite = 1 
And EveLngEleId <> 17432 
And (EveTinParEmail is null OR EveTinParEmail = 0) 
And (EveLngTicketTransfertId IS NULL OR EveLngTicketTransfertId = 0) 
And (EveTinIncidentAnnulation is null or EveTinIncidentAnnulation=0) 
And YEAR(EveDatRedaction) = 2013 
group by MONTH(EveDatRedaction) 

請求的作品，但事情是，當一個月的值爲空，我不顯示空或但它跳過它。所以，現在

我需要連接這兩個表有每個月的價值，但我可以找出如何做到這一點：要管理，創建如下日曆表。任何建議或解決方案？

Answer 1

;WITH ResultsCTE AS 
(
    SELECT MONTH(EveDatRedaction) AS ResultMonth, 
      COUNT(EveLngId) AS ResultCount 
    FROM T_Evenement 
    where EveLngDosId = 1062 
      And EveLngBibId = 268 
      And EveTinSite = 1 
      And EveLngEleId <> 17432 
      And (EveTinParEmail is null OR EveTinParEmail = 0) 
      And (EveLngTicketTransfertId IS NULL OR EveLngTicketTransfertId = 0) 
      And (EveTinIncidentAnnulation is null or EveTinIncidentAnnulation=0) 
      And YEAR(EveDatRedaction) = 2013 
    GROUP BY MONTH(EveDatRedaction) 
) 
SELECT CalendarStrLibelle,ISNULL(ResultCount,0) AS ResultCount 
FROM Calendar 
     LEFT JOIN ResultsCTE 
      ON ResultMonth = CalendarLngId 

Answer 2

嘗試這一個 -

SELECT CalendarStrLibelle 
    , ResultCount = ISNULL(cnt, 0) 
FROM dbo.Calendar c 
LEFT JOIN (
    SELECT 
      [month] = MONTH(EveDatRedaction) 
     , cnt = COUNT(EveLngId) 
    FROM dbo.T_Evenement 
    WHERE EveLngDosId = 1062 
     AND EveLngBibId = 268 
     AND EveTinSite = 1 
     AND EveLngEleId <> 17432 
     AND ISNULL(EveTinParEmail, 0) = 0 
     AND ISNULL(EveLngTicketTransfertId, 0) = 0 
     AND ISNULL(EveTinIncidentAnnulation, 0) = 0 
     AND YEAR(EveDatRedaction) = 2013 
    GROUP BY MONTH(EveDatRedaction) 
) t ON t.[month] = c.CalendarLngId