加入两个表的总和（）表

我现在有一个查询，显示了我的团队，他们的当前角色（从另一表中查找）：加入两个表的总和（）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;

而另一查询列出了每个人的工作时间每周：

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;

我试过（不成功）通过将第二查询作为子查询中先用无果加入这些查询：我得到“你已经写在主查询中不使用EXIST关键字就可以返回多个字段的子查询...“

我试图得到一个查询，它将显示来自同一查询的工作人员姓名，角色名称和'当前'总工作时间。有人可以给我一个线索如何实现这个目标，或者我做错了什么（毫无疑问，这简直太尴尬了）。

如果能提供帮助，欢迎提供更多信息。

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

我们使用（不要笑）MS Access 2007年

来源

2012-10-09 mitch_au

你能发表表结构（只有重要的列）和SQL数据库引擎的名称和版本吗？（我会重新创建这个表格，并试图提供一个答案） – WBAR

我已经将表格结构添加到原始文章;感谢您的努力！ –

我没有访问MSACCESS但我在MySQL准备的东西（您IIF类似于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

基于此结构：

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

来源

2012-10-09 22:07:44 WBAR

'现在（）'功能可以改变日期你想要什么:) – WBAR

非常感谢您的帮助，我曾经（毫无疑问，通过无知）将我的头撞在墙上几个小时！ –

感谢您接受我的回答 – WBAR

尝试这样的事：

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;

来源

2012-10-09 21:53:26 raven

加入两个表的总和（）表

回答

相关问题