Question

我有以下2个select语句，我想根据必须匹配的Date列在表格中将输入和退出时间相互合并。

     SELECT NAME, SURNAME,IDENTIFIER, CONVERT(VARCHAR,(MIN(TRANSIT_DATE)),114) AS [ENTRY],'' AS      [EXIT], CONVERT(VARCHAR(10),TRANSIT_DATE,103)AS [DATE] 
  FROM [10.230.0.15].[SCAT].[dbo].[HA_TRANSIT] a
  WHERE STR_DIRECTION = 'Entry'
  and a.IDENTIFIER = '20045619'
  AND STR_TRANSIT_STATUS = 'Granted'
  AND TRANSIT_DATE BETWEEN @CompleteSDate AND @CompleteEDate
  GROUP BY NAME, SURNAME,IDENTIFIER,CONVERT(VARCHAR(10),TRANSIT_DATE,103) 


 SELECT NAME, SURNAME,IDENTIFIER, '' AS [ENTRY],CONVERT(VARCHAR,(MAX(TRANSIT_DATE)),114) AS [EXIT], CONVERT(VARCHAR(10),TRANSIT_DATE,103)AS [DATE] 
 FROM [10.230.0.15].[SCAT].[dbo].[HA_TRANSIT] a
 WHERE STR_DIRECTION = 'Exit'
 and a.IDENTIFIER = '20045619'
 AND STR_TRANSIT_STATUS = 'Granted'
 AND TRANSIT_DATE BETWEEN @CompleteSDate AND @CompleteEDate
 GROUP BY NAME, SURNAME,IDENTIFIER,CONVERT(VARCHAR(10),TRANSIT_DATE,103)

查询1的结果NAME SURNAME IDENTIFIER ENTRY EXIT DATE   ANTONETTE COLEMAN 20045619 07：11：01：000 10/09/2013   ANTONETTE COLEMAN 20045619 06：58：58：000 11/09/2013   ANTONETTE COLEMAN 20045619 07：04：27：000 12/09/2013   ANTONETTE COLEMAN 20045619 07：02：48：000 13/09/2013   ANTONETTE COLEMAN 20045619 07：17：43：000 16/09/2013   ANTONETTE COLEMAN 20045619 06：54：35：000 17/09/2013   ANTONETTE COLEMAN 20045619 07：00：36：000 18/09/2013   ANTONETTE COLEMAN 20045619 06：57：33：000 19/09/2013

查询2结果姓名SURNAME标识符输入出口
  DATE ANTONETTE COLEMAN 20045619 16：09：39：000 10/09/2013   ANTONETTE COLEMAN 20045619 16：01：19：000 11/09/2013   ANTONETTE COLEMAN 20045619 16：18：49：000 12/09/2013   ANTONETTE COLEMAN 20045619 16：04：28：000 13/09/2013   ANTONETTE COLEMAN 20045619 16：06：04：000 16/09/2013   ANTONETTE COLEMAN 20045619 16：05：30：000 17/09/2013   ANTONETTE COLEMAN 20045619 16：02：00：000 18/09/2013

Answer 1

您可能不需要两个SELECT，WHERE条件的唯一区别是STR_DIRECTION。只需将其移至CASE：

   SELECT NAME, SURNAME,IDENTIFIER,
       CONVERT(VARCHAR,(MIN(CASE WHEN STR_DIRECTION = 'Entry' THEN TRANSIT_DATE END)),114) AS [ENTRY],
       CONVERT(VARCHAR,(MAX(CASE WHEN STR_DIRECTION = 'Exit'  THEN TRANSIT_DATE END)),114) AS [EXIT],
       CONVERT(VARCHAR(10),TRANSIT_DATE,103)AS [DATE] 
   FROM [10.230.0.15].[SCAT].[dbo].[HA_TRANSIT] a
   WHERE STR_DIRECTION IN ('Entry', 'Exit')
   AND a.IDENTIFIER = '20045619'
   AND STR_TRANSIT_STATUS = 'Granted'
   AND TRANSIT_DATE BETWEEN @CompleteSDate AND @CompleteEDate
   GROUP BY NAME, SURNAME,IDENTIFIER,CONVERT(VARCHAR(10),TRANSIT_DATE,103)

Answer 2

SELECT NAME, SURNAME,IDENTIFIER, CONVERT(VARCHAR,(MIN(TRANSIT_DATE)),114) AS [ENTRY],''     AS      [EXIT], CONVERT(VARCHAR(10),TRANSIT_DATE,103)AS [DATE] 
  FROM [10.230.0.15].[SCAT].[dbo].[HA_TRANSIT] a
  WHERE STR_DIRECTION = 'Entry'
 and a.IDENTIFIER = '20045619'
 AND STR_TRANSIT_STATUS = 'Granted'
 AND TRANSIT_DATE BETWEEN @CompleteSDate AND @CompleteEDate
 GROUP BY NAME, SURNAME,IDENTIFIER,CONVERT(VARCHAR(10),TRANSIT_DATE,103) 

UNION

 SELECT NAME, SURNAME,IDENTIFIER, '' AS [ENTRY],CONVERT(VARCHAR,    (MAX(TRANSIT_DATE)),114) AS [EXIT], CONVERT(VARCHAR(10),TRANSIT_DATE,103)AS [DATE] 
FROM [10.230.0.15].[SCAT].[dbo].[HA_TRANSIT] a
WHERE STR_DIRECTION = 'Exit'
and a.IDENTIFIER = '20045619'
AND STR_TRANSIT_STATUS = 'Granted'
AND TRANSIT_DATE BETWEEN @CompleteSDate AND @CompleteEDate
GROUP BY NAME, SURNAME,IDENTIFIER,CONVERT(VARCHAR(10),TRANSIT_DATE,103)

如何根据条件合并/合并2个select语句

2 个答案: