如何將兩個不同的查詢組合成不同的輸出到一個輸出

Question

我是新來的SQL查詢，並且已經被拋入了深層！

我有兩個需要合併在一起的查詢。一個執行三個計算（總和爲WGHours，計爲WGCount，總和/計數爲WGAvg）並將輸出分爲2列：工作組和優先級。其他執行相同的計算（PHours，PCOunt，PAVG而是由一列僅基 - 優先這是這樣我就可以找到針對每個優先級的總圖中，所以我可以最後劃分WGAvg/PAVG以產生一個％。

我可以單獨創建兩個查詢，但需要將兩者的輸出合併在一起，以便我可以在一個表中使用它們。我試過UNION ALL，但它不會生成我需要的輸出，這是：

WORK_GROUP, PRIORITY, WGHOURS, WGCount, WGAvg, PHours, PCount, PAvg 

任何想法我如何做到這一點？我試過使用一個解決辦法，我在這裏找到，但得到的Oracle錯誤，告訴我該命令沒有正確地結束：

SELECT One.OPriority, 
     WorkGroup, 
     AverageHours, 
     WoCount, 
     Divis 
FROM (Select CORVU.MSV620.ORIG_PRIORITY as OPriority, 
      CORVU.MSV620.WORK_GROUP as WorkGroup, 
      SUM(CORVU.MSV621.ACT_LAB_HRS) AS AverageHours, 
      COUNT(CORVU.MSV621.WORK_ORDER) AS WoCount, 
      CAST(SUM(CORVU.MSV621.ACT_LAB_HRS)/COUNT(CORVU.MSV621.WORK_ORDER) AS DECIMAL (38, 2)) AS Divis 
    FROM CORVU.MSV620, CORVU.MSV621 
    WHERE CORVU.MSV620.WORK_ORDER = CORVU.MSV621.WORK_ORDER 
    GROUP BY CORVU.MSV620.ORIG_PRIORITY, CORVU.MSV620.WORK_GROUP) AS one 
JOIN (
     SELECT CORVU.MSV620.ORIG_PRIORITY as OPriority, 
     CAST(SUM(CORVU.MSV621.ACT_LAB_HRS)/COUNT(CORVU.MSV621.WORK_ORDER) AS DECIMAL (38, 2)) AS DivisOP 
     FROM  CORVU.MSV620, CORVU.MSV621 
     WHERE CORVU.MSV620.WORK_ORDER = CORVU.MSV621.WORK_ORDER AND (CORVU.MSV620.WORK_GROUP IN ('ENGA01', 'ENGA02', 'ENGA04', 'ENGA05', 'ENGA06', 
      'ENGA08')) AND (CORVU.MSV620.ACCOUNT_CODE LIKE '%B01%') AND (CORVU.MSV621.ACT_LAB_HRS > 0) AND (NOT (CORVU.MSV620.STD_JOB_NO IN ('ELE995', 
      'MEC995', 'ICA995'))) AND (CORVU.MSV620.ORIG_PRIORITY IN ('CH', 'CS', 'T0', 'T1', 'T2', 'T3', 'T4')) AND 
      (CORVU.MSV620.CLOSED_DT >= TO_CHAR(ADD_MONTHS(TRUNC(SYSDATE, 'MONTH'), - 1), 'yyyymmdd')) AND 
      (CORVU.MSV620.CLOSED_DT <= TO_CHAR(ADD_MONTHS(TRUNC(SYSDATE + 30, 'MONTH') - 1, - 1), 'yyyymmdd')) 
     GROUP BY CORVU.MSV620.ORIG_PRIORITY) as two 
WHERE  one.CORVU.MSV620.ORIG_PRIORITY = two.CORVU.MSV620.ORIG_PRIORITY;   

Answer 1

嘗試使用第二查詢作爲一個字段使用（子）選擇，就像這樣：

select a.name, a.address, sum(a.xxx), 
(select avg(b.amount) from costs b where b.id=a.id) 
from clients a 
where ... ; 

Answer 2

在您的查詢中，您正在使用join。這然後期望on子句而不是where子句。這可能會解決您的問題：

SELECT One.OPriority, 
     WorkGroup, 
     AverageHours, 
     WoCount, 
     Divis 
FROM (Select CORVU.MSV620.ORIG_PRIORITY as OPriority, 
      CORVU.MSV620.WORK_GROUP as WorkGroup, 
      SUM(CORVU.MSV621.ACT_LAB_HRS) AS AverageHours, 
      COUNT(CORVU.MSV621.WORK_ORDER) AS WoCount, 
      CAST(SUM(CORVU.MSV621.ACT_LAB_HRS)/COUNT(CORVU.MSV621.WORK_ORDER) AS DECIMAL (38, 2)) AS Divis 
    FROM CORVU.MSV620, CORVU.MSV621 
    WHERE CORVU.MSV620.WORK_ORDER = CORVU.MSV621.WORK_ORDER 
    GROUP BY CORVU.MSV620.ORIG_PRIORITY, CORVU.MSV620.WORK_GROUP) one 
------------------------------------------------------------------^ 
JOIN (
     SELECT CORVU.MSV620.ORIG_PRIORITY as OPriority, 
     CAST(SUM(CORVU.MSV621.ACT_LAB_HRS)/COUNT(CORVU.MSV621.WORK_ORDER) AS DECIMAL (38, 2)) AS DivisOP 
     FROM  CORVU.MSV620, CORVU.MSV621 
     WHERE CORVU.MSV620.WORK_ORDER = CORVU.MSV621.WORK_ORDER AND (CORVU.MSV620.WORK_GROUP IN ('ENGA01', 'ENGA02', 'ENGA04', 'ENGA05', 'ENGA06', 
      'ENGA08')) AND (CORVU.MSV620.ACCOUNT_CODE LIKE '%B01%') AND (CORVU.MSV621.ACT_LAB_HRS > 0) AND (NOT (CORVU.MSV620.STD_JOB_NO IN ('ELE995', 
      'MEC995', 'ICA995'))) AND (CORVU.MSV620.ORIG_PRIORITY IN ('CH', 'CS', 'T0', 'T1', 'T2', 'T3', 'T4')) AND 
      (CORVU.MSV620.CLOSED_DT >= TO_CHAR(ADD_MONTHS(TRUNC(SYSDATE, 'MONTH'), - 1), 'yyyymmdd')) AND 
      (CORVU.MSV620.CLOSED_DT <= TO_CHAR(ADD_MONTHS(TRUNC(SYSDATE + 30, 'MONTH') - 1, - 1), 'yyyymmdd')) 
     GROUP BY CORVU.MSV620.ORIG_PRIORITY) two 
---------------------------------------------^ 
     on one.CORVU.MSV620.ORIG_PRIORITY = two.CORVU.MSV620.ORIG_PRIORITY; 
------^ was WHERE 

編輯：

我也去掉了as（因爲你已經在註釋中說明）。 Oracle不允許as用於表別名。