Question

我有2个数据集包含我想要链接在一起的不同数据。下面的两个表达式给出了我自己的正确值，但我没有成功地将它们组合起来。

表达式1：

=SUM(IIF(Fields!Staff.Value = "Trainee",1,0), "Dataset1")

表达式2：

=SUM(IIF(Fields!Grade.Value = "Pass" OR Fields!Grade.Value = "Achieved", 1, 0), "Dataset2")

我正在努力获得已经获得“通过”或“达到”等级的学员人数。两个数据集之间有一个共同字段，可用于将它们链接在一起。最终，第一个数据集将拉出所有受训者，第二个数据集将计算他们获得的传递次数。

我不确定最好的方法是通过表达式（如上所述）还是通过查询。如果查询最好，我不知道该怎么做。任何有关这方面的帮助将不胜感激。

修改

以下是正在使用的两个查询。

查询1：

SELECT
EMP.FULLNAME,
EMP.EMP_ID,
WS_EVENT_STATUS.BRANCH AS "Department",
WS_EVENT_STATUS.STATUS AS "Competency Status"

FROM       
EMP 
INNER JOIN
EMPEVENT ON EMP.EMP_ID = EMPEVENT.EMP_ID

INNER JOIN
WS_PERSONAL_DETAIL ON EMP.EMP_ID = WS_PERSONAL_DETAIL.EMP_ID

LEFT OUTER JOIN
WS_EVENT_STATUS ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_STATUS.EVENT_SEQ_NO

WHERE
(EMPEVENT.EVENT_ID = 'STATUS')

查询2：

SELECT
EMP.EMP_ID,
EMPEVENT.EVENT_ID,
concat( WS_EVENT_TESTFORM1.ASSDATE, WS_EVENT_TESTFORM2.ASSDATE) AS "Assessment Date",
concat( WS_EVENT_TESTFORM1.STFNAME, WS_EVENT_TESTFORM2.STFNAME) AS "Staff Name",
concat( WS_EVENT_TESTFORM1.GRADE, WS_EVENT_TESTFORM2.GRADE) AS "Grade"

FROM        
EMP 
INNER JOIN
EMPEVENT ON EMP.EMP_ID = EMPEVENT.EMP_ID
INNER JOIN
WS_PERSONAL_DETAIL ON EMP.EMP_ID = WS_PERSONAL_DETAIL.EMP_ID 
LEFT OUTER JOIN
WS_EVENT_TESTFORM1 ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_TESTFORM1.EVENT_SEQ_NO 
LEFT OUTER JOIN
WS_EVENT_TESTFORM2 ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_TESTFORM2.EVENT_SEQ_NO 

WHERE
EMP.EMP_ID = EMPEVENT.EMP_ID AND
((EMPEVENT.EVENT_ID = 'TESTFORM1') OR
(EMPEVENT.EVENT_ID = 'TESTFORM2'))
AND                                         
((WS_EVENT_TESTFORM1.ASSDATE BETWEEN @StartDate AND @EndDate) OR
(WS_EVENT_TESTFORM2.ASSDATE BETWEEN @StartDate AND @EndDate))

Answer 1

我无法对此进行测试，因为我不知道您的数据表是什么样的，但我认为这应该可以在一次查询中为您提供所有数据。

SELECT
EMP.FULLNAME,
EMP.EMP_ID,
EMPEVENT.EVENT_ID,
WS_EVENT_STATUS.BRANCH AS "Department",
WS_EVENT_STATUS.STATUS AS "Competency Status",
concat( WS_EVENT_TESTFORM1.ASSDATE, WS_EVENT_TESTFORM2.ASSDATE) AS "Assessment Date",
concat( WS_EVENT_TESTFORM1.STFNAME, WS_EVENT_TESTFORM2.STFNAME) AS "Staff Name",
concat( WS_EVENT_TESTFORM1.GRADE, WS_EVENT_TESTFORM2.GRADE) AS "Grade"

FROM        
EMP 
INNER JOIN
EMPEVENT ON EMP.EMP_ID = EMPEVENT.EMP_ID
INNER JOIN
WS_PERSONAL_DETAIL ON EMP.EMP_ID = WS_PERSONAL_DETAIL.EMP_ID 
LEFT OUTER JOIN
WS_EVENT_TESTFORM1 ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_TESTFORM1.EVENT_SEQ_NO 
LEFT OUTER JOIN
WS_EVENT_TESTFORM2 ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_TESTFORM2.EVENT_SEQ_NO 
LEFT OUTER JOIN
WS_EVENT_STATUS ON EMPEVENT.EVENT_SEQ_NO = WS_EVENT_STATUS.EVENT_SEQ_NO

WHERE
EMP.EMP_ID = EMPEVENT.EMP_ID AND
((EMPEVENT.EVENT_ID = 'TESTFORM1') OR
(EMPEVENT.EVENT_ID = 'TESTFORM2'))
AND                                         
((WS_EVENT_TESTFORM1.ASSDATE BETWEEN @StartDate AND @EndDate) OR
(WS_EVENT_TESTFORM2.ASSDATE BETWEEN @StartDate AND @EndDate))
AND
(EMPEVENT.EVENT_ID = 'STATUS')

你可以做很多事情来清理这个查询，但这是个人的事情。比如...

使用表别名来保存每次引用表列时必须指定全名的名称（https://technet.microsoft.com/en-us/library/ms187455(v=sql.105).aspx）
在hte WHERE子句中不需要第一行，你在EMP_ID上的EMP和EMPEVENT之间进行INNER连接，所以这些将始终是相同的
使用IN代替多个等于表达式，以便AND ((EMPEVENT.EVENT_ID = 'TESTFORM1') OR (EMPEVENT.EVENT_ID = 'TESTFORM2'))变为AND EMPEVENT.EVENT_ID IN('TESTFORM1', 'TESTFORM2')

更新：由于上述方法无效，我无法说明为什么我无法看到您的数据，请尝试以下操作。

SELECT a.FullName, a.Emp_ID, a.Department, a.[Competency Status]
        , b.EVENT_ID, b.[Assesment Date], b.[Staff name], b.Grade
        FROM (
              SELECT
                    e.FULLNAME,
                    e.EMP_ID,
                    es.BRANCH AS "Department",
                    es.STATUS AS "Competency Status"
                FROM EMP e
                    INNER JOIN EMPEVENT ee ON e.EMP_ID = ee.EMP_ID
                    INNER JOIN WS_PERSONAL_DETAIL pd ON e.EMP_ID = pd.EMP_ID
                    LEFT OUTER JOIN WS_EVENT_STATUS es ON ee.EVENT_SEQ_NO = es.EVENT_SEQ_NO
                  WHERE (ee.EVENT_ID = 'STATUS')
              ) a
          LEFT JOIN
              (
              SELECT
                  e.EMP_ID,
                  ee.EVENT_ID,
                  concat( t1.ASSDATE, t2.ASSDATE) AS "Assessment Date",
                  concat( t1.STFNAME, t2.STFNAME) AS "Staff Name",
                  concat( t1.GRADE, t2.GRADE) AS "Grade"
              FROM EMP e
                  INNER JOIN EMPEVENT ee ON e.EMP_ID = ee.EMP_ID
                  INNER JOIN WS_PERSONAL_DETAIL pd ON e.EMP_ID = pd.EMP_ID 
                  LEFT OUTER JOIN WS_EVENT_TESTFORM1 t1 ON ee.EVENT_SEQ_NO = t1.EVENT_SEQ_NO 
                  LEFT OUTER JOIN WS_EVENT_TESTFORM2 t2 ON ee.EVENT_SEQ_NO = t2.EVENT_SEQ_NO 
              WHERE 
                  ee.EVENT_ID IN ('TESTFORM1', 'TESTFORM2')
                  AND (  
                        (t1.ASSDATE BETWEEN @StartDate AND @EndDate) OR
                        (t2.ASSDATE BETWEEN @StartDate AND @EndDate)
                    )
              ) b
          ON a.EMP_ID = b.EMP_ID

基本上运行两个查询，然后通过EMP_ID

加入它们

IIF语句从2个不同的数据集中获取值Visual Studio 2012（SSRS）

1 个答案: