使用SQL Server 2008中的Date函数进行计算

Question

使用SQL Server 2008中的Date函数进行计算

Roh*_*hur 14 sql sql-server sql-server-2008

我试图计算TO_DATE列一组BINGID,INDUSID,COMP1.

当IsRowActive = 1接着TO_DATE="9999-12-31",正被正确地返回.

但是什么时候IsRowActive = 0,我们必须计算To_Date哪个应该比下一个少1秒FROMDT

数据:

    DECLARE @MYTABLE TABLE

(
BINGID INT,
INDUSID INT,
DTSEARCH DATETIME2,
COMP1 VARCHAR (100),
LISTPRICE NUMERIC(10,2),
FROMDT DATETIME2,
IsRowActive INT

)
INSERT @MYTABLE

SELECT 1002285, 1002,   '2016-03-03 04:10:58.0000000',  '0026PU009163-031', '77.7600',  '2015-12-19 12:51:49.0000000',0 UNION ALL
SELECT 1002285, 1002,   '2016-05-27 12:14:53.0000000',  '0026PU009163-031', '85.2200',  '2016-05-27 12:14:53.0000000',0 UNION ALL
SELECT 1002285, 1002,   '2016-07-20 06:44:37.0000000',  '0026PU009163-031', '90.3900',  '2016-07-20 06:44:37.0000000',0 UNION ALL
SELECT 1002285, 1002,   '2016-11-09 13:37:13.0000000',  '0026PU009163-031', '131.4500', '2016-10-18 13:49:10.0000000',1 UNION ALL
SELECT 1002285, 1002,   '2015-12-19 12:51:41.0000000',  '10122374', 65.1400,    '2015-12-19 12:51:41.0000000',  0  UNION ALL
SELECT 1002285, 1002,   '2016-03-03 04:11:01.0000000',  '10122374', 117.2100,   '2016-03-03 04:11:01.0000000',  0  UNION ALL
SELECT 1002285, 1002,   '2016-05-27 12:14:45.0000000',  '10122374', 53.5500,    '2016-05-27 12:14:45.0000000',  0  UNION ALL
SELECT 1002285, 1002,   '2016-07-20 06:44:29.0000000',  '10122374', 48.5000,    '2016-07-20 06:44:29.0000000',  0  UNION ALL
SELECT 1002285, 1002,   '2016-10-18 13:49:00.0000000',  '10122374', 75.6800,    '2016-10-18 13:49:00.0000000',  0  UNION ALL
SELECT 1002285, 1002,   '2016-11-09 13:37:02.0000000',  '10122374', 68.2400,    '2016-11-09 13:37:02.0000000',  1 UNION ALL

SELECT 1000001, 1002,   '2016-03-03 02:22:09.0000000',  '161GDB1577',   37.1700,    '2015-12-18 06:45:05.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-03-03 02:22:18.0000000',  '0392347402',   41.9100,    '2015-12-18 06:45:14.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-05-26 14:54:28.0000000',  '161GDB1577',   46.7100,    '2016-05-26 14:54:28.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-05-26 14:54:42.0000000',  '0392347402',   54.7100,    '2016-05-26 14:54:42.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-07-15 06:34:33.0000000',  '161GDB1577',   52.4800,    '2016-07-15 06:34:33.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-07-15 06:34:45.0000000',  '0392347402',   81.7100,    '2016-07-15 06:34:45.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-10-17 11:26:45.0000000',  '161GDB1577',   61.6400,    '2016-10-17 11:26:45.0000000',0  UNION ALL
SELECT 1000001, 1002,   '2016-11-09 02:21:17.0000000',  '0392347402',   81.9200,    '2016-10-17 11:26:58.0000000',1  UNION ALL
SELECT 1000001, 1002,   '2016-11-09 02:21:05.0000000',  '161GDB1577',   78.3500,    '2016-11-09 02:21:05.0000000',1  UNION ALL
SELECT 1000005, 1002,   '2018-11-09 02:21:05.0000000',  '556556GHB',    78.3500,    '2018-11-09 02:21:05.0000000',1

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查询我试过 - 不幸的是它返回了错误的数据:

SELECT
    BINGID, INDUSID, DTSEARCH,  
    COMP1, LISTPRICE, FROMDT,
    CASE 
       WHEN IsRowActive = 1 
          THEN '9999-12-31' 
          ELSE TO_DATE 
    END AS TO_DATE,
    IsRowActive
FROM 
    @MYTABLE mt
OUTER APPLY 
    (SELECT  
         MAX(DATEADD(second, -1, FROMDT)) TO_DATE 
     FROM   
         @MYTABLE mt2 
     WHERE   
         mt2.BINGID = mt.BINGID 
         AND mt2.INDUSID = mt.INDUSID 
         AND mt2.FROMDT > mt.FROMDT) oa
WHERE 
    mt.INDUSID = '1002'

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预期产出

  BINGID    INDUSID DTSEARCH    COMP1   LISTPRICE   FROMDT  NEW_TO_DATE IsRowCurrent
1000001 1002    2016-03-03 02:22:09.0000000 161GDB1577  37.1700 2015-12-18 06:45:05.0000000 2016-05-26 14:54:27.0000000 0
1000001 1002    2016-03-03 02:22:18.0000000 0392347402  41.9100 2015-12-18 06:45:14.0000000 2016-05-26 14:54:41.0000000 0
1000001 1002    2016-05-26 14:54:28.0000000 161GDB1577  46.7100 2016-05-26 14:54:28.0000000 2016-07-15 06:34:32.0000000 0
1000001 1002    2016-05-26 14:54:42.0000000 0392347402  54.7100 2016-05-26 14:54:42.0000000 2016-07-15 06:34:44.0000000 0
1000001 1002    2016-07-15 06:34:33.0000000 161GDB1577  52.4800 2016-07-15 06:34:33.0000000 2016-10-17 11:26:44.0000000 0
1000001 1002    2016-07-15 06:34:45.0000000 0392347402  81.7100 2016-07-15 06:34:45.0000000 2016-10-17 11:26:57.0000000 0
1000001 1002    2016-10-17 11:26:45.0000000 161GDB1577  61.6400 2016-10-17 11:26:45.0000000 2016-11-09 02:21:04.0000000 0
1000001 1002    2016-11-09 02:21:17.0000000 0392347402  81.9200 2016-10-17 11:26:58.0000000 9999-12-31 00:00:00.0000000 1
1000001 1002    2016-11-09 02:21:05.0000000 161GDB1577  78.3500 2016-11-09 02:21:05.0000000 9999-12-31 00:00:00.0000000 1
1000005 1002    2018-11-09 02:21:05.0000000 556556GHB   78.3500 2018-11-09 02:21:05.0000000 9999-12-31 00:00:00.0000000 1
1002285,    1002,   '2016-03-03 04:10:58.0000000',  '0026PU009163-031', '77.7600',  2015-12-19 12:51:49.0000000'    2016-05-27 12:14:52.0000000'    0
1002285,    1002,   '2016-05-27 12:14:53.0000000',  '0026PU009163-031', '85.2200',  2016-05-27 12:14:53.0000000'    2016-07-20 06:44:36.0000000'    0
1002285,    1002,   '2016-07-20 06:44:37.0000000',  '0026PU009163-031', '90.3900',  2016-07-20 06:44:37.0000000'    2016-10-18 13:49:09.0000000'    0
1002285,    1002,   '2016-11-09 13:37:13.0000000',  '0026PU009163-031', '131.4500', 2016-10-18 13:49:10.0000000'    9999-12-31 00:00:00.0000000 1
1002285,    1002,   '2015-12-19 12:51:41.0000000',  '10122374', 65.1400,    '2015-12-19 12:51:41.0000000',  2016-03-03 04:11:00.0000000',   0
1002285,    1002,   '2016-03-03 04:11:01.0000000',  '10122374', 117.2100,   '2016-03-03 04:11:01.0000000',  2016-05-27 12:14:44.0000000',   0
1002285,    1002,   '2016-05-27 12:14:45.0000000',  '10122374', 53.5500,    '2016-05-27 12:14:45.0000000',  2016-07-20 06:44:28.0000000',   0
1002285,    1002,   '2016-07-20 06:44:29.0000000',  '10122374', 48.5000,    '2016-07-20 06:44:29.0000000',  2016-10-18 13:48:59.0000000',   0
1002285,    1002,   '2016-10-18 13:49:00.0000000',  '10122374', 75.6800,    '2016-10-18 13:49:00.0000000',  2016-11-09 13:37:01.0000000',   0
1002285,    1002,   '2016-11-09 13:37:02.0000000',  '10122374', 68.2400,    '2016-11-09 13:37:02.0000000',  9999-12-31 00:00:00.0000000 1

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谢谢.

Answer 1

Cha*_*kya 1

DECLARE @MYTABLE TABLE
(
BINGID  int,
INDUSID int,
DTSEARCH datetime2, 
COMP1 varchar(100),
LISTPRICE numeric(15,5),    
FROMDT  datetime2,
IsRowActive int

)
insert @MYTABLE

SELECT 1002285  ,1002   ,'2016-03-03 04:10:58.0000000', '0026PU009163-031', 77.7600 ,'2015-12-19 12:51:49.0000000', 0 UNION ALL
SELECT 1002285  ,1002   ,'2016-05-27 12:14:53.0000000', '0026PU009163-031', 85.2200 ,'2016-05-27 12:14:53.0000000', 0  UNION ALL
SELECT 1002285  ,1002   ,'2016-07-20 06:44:37.0000000', '0026PU009163-031', 90.3900 ,'2016-07-20 06:44:37.0000000', 0  UNION ALL
SELECT 1002285  ,1002   ,'2016-11-09 13:37:13.0000000', '0026PU009163-031', 131.4500,'2016-07-20 06:44:37.0000000', 1


select BINGID,DTSEARCH,COMP1,LISTPRICE,FROMDT,CASE WHEN IsRowActive = 0 THEN lead(DATEADD(SS,-1,FROMDT)) OVER (ORDER BY FROMDT) ELSE  '9999-12-31' END AS expected_date

FROM @MYTABLE mt

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输出

BINGID  DTSEARCH    COMP1   LISTPRICE   FROMDT  expected_date
1002285 2016-03-03 04:10:58.0000000 0026PU009163-031    77.76000    2015-12-19 12:51:49.0000000 2016-05-27 12:14:52.0000000
1002285 2016-05-27 12:14:53.0000000 0026PU009163-031    85.22000    2016-05-27 12:14:53.0000000 2016-07-20 06:44:36.0000000
1002285 2016-07-20 06:44:37.0000000 0026PU009163-031    90.39000    2016-07-20 06:44:37.0000000 2016-07-20 06:44:36.0000000
1002285 2016-11-09 13:37:13.0000000 0026PU009163-031    131.45000   2016-07-20 06:44:37.0000000 9999-12-31 00:00:00.0000000

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“LEAD”在 SQL Server 2008 中不可用。 (2认同)

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