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I have an application that makes an entry every hour in a MS SQL database. The last entry on the 12th FEB is a zero value and is showing in my weekly report.

What I want to do is take the value from the previous count and enter into the filed instead of the zero value.

Can someone offer some advice on how to this because it is beyond my TSQL skills?

SELECT * FROM [dbo].[CountDetails]
WHERE [updateTime] < '2013-02.13'
AND [updateTime] > '2013-02.12'
AND ( DATEPART(hh,[updateTime])= '22' OR DATEPART(hh,[updateTime])= '23' )

SQL Results from query

Note: The application is supposed to zero the count a Midnight but on the 12th FEB it happened early and I know why.

EDIT: There are 5 IP addresses in total and 6 counters in total because 192.168.168.11 has 2 counters. So 2111 to 2116 is an entire entry for all available counters at 22:58 and 2117 to 2122 is an entire entry for all available counters at 23:58. I need to replace the 23:58 values with the corresponding value from 22:58.

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1 に答える 1

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ここで推測しますが、ipAddress、counterNumber、およびdatetime1 時間で区切られた小数秒を除く更新 (SELECT安全のために最初にその部分を実行します):

UPDATE b
SET count = a.count
-- SELECT *
FROM dbo.CountDetails a
JOIN dbo.CountDetails b ON a.ipAddress = b.ipAddress AND a.counterNumber = b.counterNumber
AND CONVERT(VARCHAR(20),b.updateTime,120) = CONVERT(VARCHAR(20),DATEADD(HOUR,1,a.updateTime),120)
于 2013-02-17T17:37:20.410 に答える