Question

如何将多行添加到一行中？我正在尝试添加两行数据，并将数据输出到一行中以用于一个特定作业。我已经将输出减少到一个作业，但是一旦我弄清楚如何将两行合并为一个，我将在输出中放置多个作业。每个工作都有两名员工，所以我必须将两个员工加在一起，每个工作总共工作一小时。

SELECT
     TJ.intJobID
    ,TJ.strJobDescription
    ,TJS.strJobStatus
    ,SUM(TJE.intHoursWorked) AS intTotalHoursWorked

FROM
     TJobs          AS TJ
    ,TJobStatus     AS TJS
    ,TJobEmployees  AS TJE
    ,TEmployees     AS TE
WHERE
    TJ.intJobID         =       TJE.intJobID
AND TJ.intJobStatusID   =       TJS.intJobStatusID
AND TE.intEmployeeID    =       TJE.intEmployeeID
AND TJ.intJobID = 1
GROUP BY
    TJ.intJobID
   ,TJE.intEmployeeID
   ,TJ.strJobDescription
   ,TJS.strJobStatus
   ,TJE.intHoursWorked


 /*

     Output I'm Getting

    intJobID    strJobStatus    intTotalHoursWorked
       1          Complete              50
       1          Complete              42

     Wanted Output

    intJobID    strJobStatus    intTotalHoursWorked
       1          Complete              92

 */

Answer 1

SELECT
     TJ.intJobID
    ,TJS.strJobStatus
    ,SUM(TJE.intHoursWorked) AS intTotalHoursWorked

...
...
GROUP BY
    TJ.intJobID
   ,TJS.strJobStatus

我仔细检查你的查询，你有太多的表。因为你真的不需要TEmployees

SELECT
     TJ.intJobID
    ,TJ.strJobDescription
    ,TJS.strJobStatus
    ,SUM(TJE.intHoursWorked) AS intTotalHoursWorked

FROM TJobs          AS TJ
JOIN TJobStatus     AS TJS
  ON TJ.intJobStatusID =  TJS.intJobStatusID
JOIN TJobEmployees  AS TJE
  ON TJ.intJobID       =  TJE.intJobID
GROUP BY
    TJ.intJobID
   ,TJS.strJobStatus

Answer 2

一个选项是使用CTE ..因为我们不知道您的数据以及组中的哪个列导致了多列

;with cte
as
(
SELECT
     TJ.intJobID
    ,TJ.strJobDescription
    ,TJS.strJobStatus
    ,SUM(TJE.intHoursWorked) AS intTotalHoursWorked

FROM
     TJobs          AS TJ
    ,TJobStatus     AS TJS
    ,TJobEmployees  AS TJE
    ,TEmployees     AS TE
WHERE
    TJ.intJobID         =       TJE.intJobID
AND TJ.intJobStatusID   =       TJS.intJobStatusID
AND TE.intEmployeeID    =       TJE.intEmployeeID
AND TJ.intJobID = 1
GROUP BY
    TJ.intJobID
   ,TJE.intEmployeeID
   ,TJ.strJobDescription
   ,TJS.strJobStatus
   ,TJE.intHoursWorked
)
select 
intJobID,
max(strJobStatus) as 'strJobStatus',
sum(intTotalHoursWorked) as 'intTotalHoursWorked'
from cte

如何将多行添加到一行中

2 个答案: