加入兩個表的總和（）表

我現在有一個查詢，顯示了我的團隊，他們的當前角色（從另一表中查找）：加入兩個表的總和（）表

SELECT firstName + ' ' + lastName as Name, 
     RTS_ROLE.roleDescription as `Current Role`, 
FROM RTS_STAFF, RTS_ROLE 
WHERE RTS_STAFF.staffRole = RTS_ROLE.roleID 
AND staffDeleted <> true 
ORDER BY roleID;

而另一查詢列出了每個人的工作時間每週：

SELECT RTS_STAFF.staffId, Sum(IIf(Isnull(Monday),0,Monday) 
+IIf(Isnull(Tuesday),0,Tuesday) 
+IIf(Isnull(Wednesday),0,Wednesday) 
+IIf(Isnull(Thursday),0,Thursday) 
+IIf(Isnull(Friday),0,Friday)) AS `Weekly Hours` 
FROM WORKING_HOURS, RTS_STAFF 
WHERE RTS_STAFF.staffId = WORKING_HOURS.staffID 
AND Date() > WORKING_HOURS.EffectiveFrom 
GROUP BY RTS_STAFF.staffId;

我試過（不成功）通過將第二查詢作爲子查詢中先用無果加入這些查詢：我得到「你已經寫在主查詢中不使用EXIST關鍵字就可以返回多個字段的子查詢...「

我試圖得到一個查詢，它將顯示來自同一查詢的工作人員姓名，角色名稱和'當前'總工作時間。有人可以給我一個線索如何實現這個目標，或者我做錯了什麼（毫無疑問，這簡直太尷尬了）。

如果能提供幫助，歡迎提供更多信息。

Table structure: 
RTS_ROLE: (lookup table) 
(pk)RoleID: number 
roleDescription: string 

RTS_STAFF 
(pk)staffId: number 
firstName: string 
lastName: string 
staffRole: number (fk to RTS_ROLE.roleID) 
staffDeleted: boolean 

WORKING_HOURS: 
(pk)workingWeekID: number 
staffID: number (fk to RTS_STAFF.staffId) 
Monday: number 
Tuesday: number 
... 
Friday:number 
EffectiveFrom: date

我們使用（不要笑）MS Access 2007年

來源

2012-10-09 mitch_au

你能發表表結構（只有重要的列）和SQL數據庫引擎的名稱和版本嗎？（我會重新創建這個表格，並試圖提供一個答案） – WBAR

我已經將表格結構添加到原始文章;感謝您的努力！ –

我沒有訪問MSACCESS但我在MySQL準備的東西（您IIF類似於MySQL的IF）：

SELECT staff.staffid, 
     staff.firstname + ' ' + staff.lastname AS Name, 
     role.roledescription     AS `Current Role`, 
     Sum(IF(Isnull(monday), 0, monday) 
      + IF(Isnull(tuesday), 0, tuesday) 
      + IF(Isnull(wednesday), 0, wednesday) 
      + IF(Isnull(thursday), 0, thursday) 
      + IF(Isnull(friday), 0, friday)) AS `Weekly Hours` 
FROM working_hours, 
     rts_staff staff, 
     rts_role role 
WHERE staff.staffrole = role.roleid 
     AND staff.staffdeleted <> true 
     AND staff.staffid = working_hours.staffid 
     AND Now() > working_hours.effectivefrom 
GROUP BY staff.staffid, 
      staff.firstname + ' ' + staff.lastname, 
      role.roledescription

基於此結構：

CREATE TABLE `rts_staff` (
    `staffid` int(11) NOT NULL, 
    `staffrole` int(11) DEFAULT NULL, 
    `firstname` varchar(45) DEFAULT NULL, 
    `lastname` varchar(45) DEFAULT NULL, 
    `staffdeleted` varchar(45) DEFAULT NULL, 
    PRIMARY KEY (`staffid`) 
) ENGINE=InnoDB 


CREATE TABLE `rts_role` (
    `roleid` int(11) NOT NULL, 
    `roledescription` varchar(45) DEFAULT NULL, 
    PRIMARY KEY (`roleid`) 
) ENGINE=InnoDB 


CREATE TABLE `working_hours` (
    `staffid` int(11) NOT NULL, 
    `effectivefrom` date DEFAULT NULL, 
    `monday` int(11) DEFAULT NULL, 
    `tuesday` int(11) DEFAULT NULL, 
    `wednesday` int(11) DEFAULT NULL, 
    `thursday` int(11) DEFAULT NULL, 
    `friday` int(11) DEFAULT NULL, 
    PRIMARY KEY (`staffid`) 
) ENGINE=InnoDB

來源

2012-10-09 22:07:44 WBAR

'現在（）'功能可以改變日期你想要什麼:) – WBAR

非常感謝您的幫助，我曾經（毫無疑問，通過無知）將我的頭撞在牆上幾個小時！ –

感謝您接受我的回答 – WBAR

嘗試這樣的事：

SELECT firstName + ' ' + lastName as Name, 
    RTS_ROLE.roleDescription as `Current Role`, x.weeklyhours 
    FROM RTS_STAFF s INNER JOIN 
    RTS_ROLE r ON s.staffRole = r.roleID INNER JOIN 
    (
    SELECT RTS_STAFF.staffId, Sum(IIf(Isnull(Monday),0,Monday) 
    +IIf(Isnull(Tuesday),0,Tuesday) 
    +IIf(Isnull(Wednesday),0,Wednesday) 
    +IIf(Isnull(Thursday),0,Thursday) 
    +IIf(Isnull(Friday),0,Friday)) AS weeklyhours 
    FROM WORKING_HOURS, RTS_STAFF 
    WHERE RTS_STAFF.staffId = WORKING_HOURS.staffID 
    AND Date() > WORKING_HOURS.EffectiveFrom 
    GROUP BY RTS_STAFF.staffId 
    ) x ON x.staffID = s.staffID 
WHERE s.staffDeleted <> true 
ORDER BY r.roleID;

來源

2012-10-09 21:53:26 raven

加入兩個表的總和（）表

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