使用getdate从Table合并日期

Question

我是否知道如何将表合并中的日期与GETDATE()结合以显示结果？

对于示例，

SELECT  [FORM_NO]
    ,   [FORM_KIND]
    ,   [EMP_NO]
    ,   [ORG_ID]
    ,   [LEAVE_NO]
    ,   [SHIFT_NO]
    ,   [START_DAY] --// start  date apply leave 
    ,   [start_time]
    ,   [END_DAY]
    ,   [end_time] --// end date apply leave
    ,   [SUMHOURS]
    ,   [SUM_DAYS]
    ,   [ATTORNEY_EMP_NO]
    ,   [APPLY_REASON]
    ,   [NOTE]
    ,   [status]
    ,   [FILL_EMP_NO]
    ,   [FILL_DATE]
FROM [LEAVETb]

从这张表中我有开始日期和结束日期。接下来，我想加入EMP_Info，EMP_Shift，EMP_Desc和EMP_HistScan表。

SELECT  EMPINFO.EP_EMP_DEPT
    ,   EMPINFO.EP_EMP_SECTION
    ,   EMPINFO.EP_EMP_ID
    ,   EMPINFO.EP_EMP_NAME
    ,   EMPINFO.EP_EMP_SHIFT
    ,   SHIFTCAL.EP_SHIFT
FROM [EP_EMP_INFO] EMPINFO -- All EMP Details Table
JOIN [EP_SHIFT_CALENDAR] SHIFTCAL -- ALL SHIFT Type table 
     ON SHIFTCAL.EP_SHIFT_NAME = EMPINFO.EP_EMP_SHIFT 
    AND SHIFTCAL.EP_SHIFT_DATE = CONVERT(VARCHAR(8), GETDATE(), 112)
LEFT JOIN
(
    SELECT  CONVERT(VARCHAR(8), STUFF(STUFF(FIRSTSCAN.EP_SCAN_DATE, 12, 0, ':'), 15, 0, ':'), 112) AS SCANDATE
        ,   FIRSTSCAN.EP_EMP_COMPANY
        ,   FIRSTSCAN.EP_EMP_ID
        ,   FIRSTSCAN.EP_EMP_NAME
        ,   FIRSTSCAN.EP_EMP_DEPT
        ,   FIRSTSCAN.EP_EMP_SECTION
        ,   FIRSTSCAN.EP_EMP_SHIFT
        ,   FIRSTSCAN.EP_SHIFT
        ,   FIRSTSCAN.EP_SCAN_DATE
        ,   FIRSTSCAN.LATEIN
    FROM
    (
        SELECT  ROW_NUMBER() OVER (PARTITION BY SCANHIST.EP_EMP_ID, CASE
                    WHEN RIGHT(SCANHIST.EP_SCAN_DATE, 6) < '130000' AND SHIFTCAL.EP_SHIFT = 'N1' THEN CONVERT(VARCHAR(8), DATEADD(DAY, -1, CONVERT(VARCHAR(8), LEFT(SCANHIST.EP_SCAN_DATE, 8), 112)), 112) ELSE LEFT(SCANHIST.EP_SCAN_DATE, 8)
                END ORDER BY SCANHIST.EP_EMP_ID, SCANHIST.EP_SCAN_DATE) AS RowNum
            ,   SCANHIST.EP_SCAN_DATE
            ,   CASE
                    WHEN RIGHT(SCANHIST.EP_SCAN_DATE, 6) < '130000' AND SHIFTCAL.EP_SHIFT = 'N1' THEN CONVERT(VARCHAR(8), DATEADD(DAY, -1, CONVERT(VARCHAR(8), LEFT(SCANHIST.EP_SCAN_DATE, 8), 112)), 112) ELSE LEFT(SCANHIST.EP_SCAN_DATE, 8)
                END AS EMP_WORKDATE
            ,   EMPINFO.EP_EMP_COMPANY
            ,   SCANHIST.EP_EMP_ID
            ,   SCANHIST.EP_EMP_NAME
            ,   SCANHIST.EP_EMP_DEPT
            ,   SCANHIST.EP_EMP_SECTION
            ,   SCANHIST.EP_EMP_SHIFT
            ,   SHIFTCAL.EP_SHIFT
            ,   CASE WHEN RIGHT(SCANHIST.EP_SCAN_DATE, 6) > REPLACE(SHIFTDESC.EP_SHIFT_TIMEFR, ':', '') THEN 1 END AS LATEIN 
        FROM [EP_SCAN_HIST] SCANHIST  --//  Employee Scan IN / Out time Table 
        JOIN [EP_EMP_INFO] EMPINFO ON EMPINFO.EP_EMP_ID = SCANHIST.EP_EMP_ID
        JOIN [EP_SHIFT_CALENDAR] SHIFTCAL
             ON SHIFTCAL.EP_SHIFT_NAME = SCANHIST.EP_EMP_SHIFT
            AND SHIFTCAL.EP_SHIFT_DATE = LEFT(SCANHIST.EP_SCAN_DATE,8)
        JOIN [EP_SHIFT_DESC] SHIFTDESCON SHIFTDESC.EP_SHIFT_NAME = SHIFTCAL.EP_SHIFT
        WHERE 1=1
            AND SCANHIST.EP_SCAN_DATE >= CONVERT(VARCHAR(8),GETDATE(),112) + ' ' + CASE WHEN (SHIFTCAL.EP_SHIFT <> 'R1' AND SHIFTCAL.EP_SHIFT <> 'R2') THEN REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,-4,SHIFTDESC.EP_SHIFT_TIMEFR + ':00'),108),':','') ELSE REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,-0,SHIFTDESC.EP_SHIFT_TIMEFR + ':00'),108),':','') END
            AND SCANHIST.EP_SCAN_DATE < CASE WHEN (SHIFTCAL.EP_SHIFT = 'N1')  THEN CONVERT(VARCHAR(8),DATEADD(DAY,+1,CONVERT(VARCHAR(8),GETDATE(),112)),112) + ' ' + REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,+6,SHIFTDESC.EP_SHIFT_TIMETO + ':00'),108),':','') ELSE CASE WHEN (SHIFTCAL.EP_SHIFT = 'R1' OR SHIFTCAL.EP_SHIFT = 'R2') THEN CONVERT(VARCHAR(8),GETDATE(),112) + ' ' + REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,+0,SHIFTDESC.EP_SHIFT_TIMETO + ':00'),108),':','') ELSE CONVERT(VARCHAR(8),GETDATE(),112) + ' ' + REPLACE(CONVERT(VARCHAR(8),DATEADD(HOUR,+6,SHIFTDESC.EP_SHIFT_TIMETO + ':00'),108),':','') END END
            AND SCANHIST.EP_TRANS_LOC = 'IN'
            AND EMPINFO.EP_EMP_LEVEL > '10'
            AND EMPINFO.EP_EMP_LEVEL <> ''
            AND (SHIFTCAL.EP_SHIFT = 'D1'
          OR SHIFTCAL.EP_SHIFT = 'NS')
    ) FIRSTSCAN
    WHERE 1=1 AND FIRSTSCAN.RowNum = 1
)FIRSTSCAN ON FIRSTSCAN.EP_EMP_ID = EMPINFO.EP_EMP_ID
WHERE 1=1
    AND EMPINFO.EP_EMP_RESIGN <> 'Y'
    AND EMPINFO.EP_EMP_DOJ <= CONVERT(VARCHAR(8),GETDATE(),112)  
    AND EMPINFO.EP_EMP_LEVEL > '10' 
    AND EMPINFO.EP_EMP_LEVEL <> ''
    AND (SHIFTCAL.EP_SHIFT = 'D1' OR SHIFTCAL.EP_SHIFT = 'NS')
    AND FIRSTSCAN.EP_EMP_ID IS NULL    --// when detect the EMP_ID scan is null , the result will show.
 ORDER BY EMPINFO.EP_EMP_DEPT,EMPINFO.EP_EMP_SECTION,EMPINFO.EP_EMP_TYPE,EMPINFO.EP_EMP_ID

Emp ScanIN / OUT时间将在SQL中捕获GetDate()，所以现在如何合并开始日期和时间当IS NULL（缺席或onleave）时，FIRSTSCAN.EP_EMP_ID的结束日期，以便显示正确的结果？