Question

示例查询结果

 Employee_Last   Employee_First   RoleName   CourseName   CourseStart   CourseEnd   Attended  
 Ables           Christopher      ServiceMGR OTC Training 12/1/11       12/1/11     Yes  
 Ables           Christopher      ServiceMGR                                        No
 Ables           Christopher      ServiceMGR OTC Part 1   12/5/11       12/5/11     Yes  
 Ables           Christopher      AssetShipper                                      No  
 Ables           Christopher      AssetShipper                                      No  
 Ables           Christopher      AssetShipper                                      No  
 Ables           Christopher      AssetShipper                                      No

这些是我从查询中得到的结果，有许多查询从表中提取以获取此数据。数据库已标准化我想要创建的报告是关注Attended的。

 If Yes 
          Show all of the line item from the query 
 Else If   
          If RoleName is listed previously for a specific employee and attended =  
             yes on that line item(ie: Ables | Christopher | ServiceMGR | No -- should not be seen)  
             Don't Show 
          Else If RoleName is listed previously for a specific employee and Attended = No  
             Only Show the item once(ie: Should only see Ables | Christopher | AssetShipper | No)  
          End If  
 End IF

因此可能需要另一个Query来过滤此查询。我正在从样本数据中寻找的报告应如下所示：

 Employee_Last   Employee_First   RoleName   CourseName   CourseStart   CourseEnd   Attended  
 Ables           Christopher      ServiceMGR OTC Training 12/1/11       12/1/11     Yes  
 Ables           Christopher      ServiceMGR OTC Part 1   12/5/11       12/5/11     Yes  
 Ables           Christopher      AssetShipper                                      No

希望你能看到我在说什么。我已经做过一些关于如何隐藏和显示记录的研究，但我对Access不够熟悉。所以基本上我需要过滤Attended = No's对最终用户有意义。

Answer 1

也许就是这些问题：

SELECT employee_last,
       employee_first,
       rolename,
       coursename,
       coursestart,
       courseend,
       attended
FROM   attend
WHERE  attended = "Yes"
UNION
SELECT DISTINCT b.employee_last,
                b.employee_first,
                b.rolename,
                NULL AS coursename,
                NULL AS coursestart,
                NULL AS courseend,
                b.attended
FROM   (SELECT employee_last,
               employee_first,
               rolename
        FROM   attend
        WHERE  attended = "Yes") AS a
       RIGHT JOIN (SELECT employee_last,
                          employee_first,
                          rolename,
                          attended
                   FROM   attend
                   WHERE  attended = "No") AS b
         ON ( a.rolename = b.rolename )
            AND ( a.employee_first = b.employee_first )
            AND ( a.employee_last = b.employee_last )
WHERE  (( ( a.employee_last ) IS NULL ))

查询有意义的报告

1 个答案: