如何显示 SQL 中现有 table 的不同 Table 输出？

Question

我有这个 table,

我想 select 并显示如下输出：

是否可以在 SQL 中执行此操作？

Answer 1

自行加入也很有用。现在没有 SQL 服务器。查询可能类似于

select 
EMPNO, 
DTRDate,
T1.DT_START as ’TIME IN’,
T1.DT_END as ’TIME OUT’,
CASE T2.DT_END
    WHEN T2.DT_END IS NOT NULL 
    THEN T2.DT_END
    ELSE ‘-’
END AS  ‘AM OUT’,
CASE T2.DT_START
    WHEN T2.DT_START IS NOT NULL 
    THEN T2.DT_START
    ELSE ‘-’
END AS  ‘AM IN’,

CASE T3.DT_END
    WHEN T3.DT_END IS NOT NULL 
    THEN T3.DT_END
    ELSE ‘-’
END AS  ‘LUNCH OUT’,
CASE T3.DT_START
    WHEN T3.DT_START IS NOT NULL 
    THEN T3.DT_START
    ELSE ‘-’
END AS  ‘LUNCH IN’,

CASE T4.DT_END
    WHEN T4.DT_END IS NOT NULL 
    THEN T4.DT_END
    ELSE ‘-’
END AS  ‘PM OUT’,
CASE T4.DT_START
    WHEN T4.DT_START IS NOT NULL 
    THEN T4.DT_START
    ELSE ‘-’
END AS  ‘PM IN’,
FROM TABLENAME AS T1
LEFT outer JOIN TABLENAME AS T2 ON T1.EMPNO == T2.EMPNO AND T1.TRANS_TYPE = ’SHIFT’ AND T2.TRANS_TYPE= ‘AMBREAK’ AND T1.TRANS_TYPE == T2.TRANS_TYPE AND T1.DTRDATE == T2.DTRDATE
LEFT OUTER JOIN TABLENAME AS T3 ON T2.EMPNO == T3.EMPNO AND T2.DTRDATE == T3.DTRDATE AND T3.TRANS_TYPE = ’LUNCH’ AND T2.TRANS_TYPE == T3.TRANS_TYPE
LEFT OUTER JOIN TABLENAME AS T4 ON T3.EMPNO == T4.EMPNO AND T4.DTRDATE == T3.DTRDATE AND T4.TRANS_TYPE = ’PMBREAK AND T3.TRANS_TYPE == T4.TRANS_TYPE
where T1.TRANS_TYPE = ’SHIFT’

Answer 2

使用CASE 语句：

SELECT EmpNo, DTRDATE, 
(CASE WHEN TRANS_TYPE = 'Shift' THEN DT_START ELSE NULL END) TimeIN,
(CASE WHEN TRANS_TYPE = 'Shift' THEN DT_END ELSE NULL END) TimeOUT,
(CASE WHEN TRANS_TYPE = 'AMBreak' THEN DT_START ELSE NULL END) AMIN,
(CASE WHEN TRANS_TYPE = 'AMBreak' THEN DT_START ELSE NULL END) AMOUT,
etc...

FROM YourTable

阅读此问题以获得更多权限：SQL Case Statement Syntax?

Answer 3

我问了我的朋友（Mico 大师），给了我这个答案，而且效果很好。这是列名略有不同的答案。

SELECT
PVTIN.EMPNO, PVTIN.DTRDATE, PVTIN.TIMEIN, PVTOUT.[TIMEOUT], PVTIN.[AM OUT], PVTOUT.[AM IN], PVTIN.[LUNCH OUT], PVTOUT.[LUNCH IN], PVTIN.[PM OUT], PVTOUT.[PM IN]

FROM
(SELECT EMPNO, DTRDATE, [SHIFT] AS TIMEIN, AMBREAK AS [AM OUT], [LUNCH] AS [LUNCH OUT], [PMBREAK] AS [PM OUT] FROM
(select * from
(Select EMPNO, CONVERT(DATE, DTRDATE) AS DTRDATE, TRANS_TYPE, DT_START from dtr_emp_trans) TIN

PIVOT
(MAX(DT_START) FOR TRANS_TYPE IN ([SHIFT],[AMBREAK],[LUNCH],[PMBREAK])) PVT) PVTIN) PVTIN

LEFT JOIN
(SELECT EMPNO, DTRDATE, [SHIFT] AS TIMEOUT, AMBREAK AS [AM IN], [LUNCH] AS [LUNCH IN], [PMBREAK] AS [PM IN] FROM
(select * from
(Select EMPNO, CONVERT(DATE, DTRDATE) AS DTRDATE, TRANS_TYPE, DT_END from dtr_emp_trans) TIN

PIVOT
(MAX(DT_END) FOR TRANS_TYPE IN ([SHIFT],[AMBREAK],[LUNCH],[PMBREAK])) PVT) PVTOUT) PVTOUT
ON PVTIN.EMPNO = PVTOUT.EMPNO AND PVTIN.DTRDATE = PVTOUT.DTRDATE

是的。我就是这样。

Answer 4

我迟到了，但我花了更长的时间才找到解决方案..

create table #temp(
empno int,
dtrdate date,
trans_type nvarchar(18),
dt_start time,
dt_end time
)

insert into #temp(empno,dtrdate,trans_type,dt_start,dt_end)
values 
(28, '01/02/2017','shift','10:53:27','22:05:47'),
(28, '01/02/2017','ambreak','12:00:27','12:14:47'),
(28, '01/02/2017','lunch','16:00:27','16:05:47'),
(28, '01/03/2017','shift','12:47:27','22:47:47'),
(28, '01/03/2017','ambreak','14:02:27','14:11:47'),
(28, '01/03/2017','lunch','15:01:27','15:52:47'),
(28, '01/03/2017','pmbreak','20:32:27','20:40:47')


Select empno, dtrdate,
max(case trans_type when 'shift' then dt_start else null end) as [time in],
max(case trans_type when 'shift' then dt_end else null end) as [time out]
......
......
from #temp
group by empno, dtrdate

Answer 5

希望对你有所帮助

SELECT t1.EmpNo, t1.DTRDATE,
(CASE WHEN t1.DT_START is not null THEN t1.DT_START ELSE Null END) TimeIN,
(CASE WHEN t1.DT_START is not null THEN t1.DT_END ELSE Null END) TimeOUT,
(CASE WHEN t2.DT_START is not null THEN t2.DT_START ELSE Null END) AMIN,
(CASE WHEN t2.DT_START is not null THEN t2.DT_END ELSE Null END) AMOUT,
(CASE WHEN t3.DT_START is not null THEN t3.DT_START ELSE Null END) LUNCHIN,
(CASE WHEN t3.DT_START is not null THEN t3.DT_END ELSE Null END)  LUNCHOUT,
(CASE WHEN t4.DT_START is not null THEN t4.DT_START ELSE Null END) PMIN,
(CASE WHEN t4.DT_START is not null THEN t4.DT_END ELSE Null END) PMOUT
FROM 
(select * from  Table_1 where TRANS_TYPE = 'SHIFT') AS t1 left join
(select * from  Table_1 where TRANS_TYPE = 'AMBREAK') AS t2 on t1.EMPNO = t2.EMPNO and t1.DTRDATE = t2.DTRDATE left join
(select * from  Table_1 where TRANS_TYPE = 'LUNCH') AS t3 on t1.EMPNO = t3.EMPNO and t1.DTRDATE = t3.DTRDATE left join
(select * from  Table_1 where TRANS_TYPE = 'PMBREAK') AS t4 on t1.EMPNO = t4.EMPNO and t1.DTRDATE = t4.DTRDATE

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