Question

我想显示最近一小时的生产数量，每10秒分组一次到目前为止，我已经完成了这个

SELECT 

COUNT(*) AS [PRODUCTION],
(DATEPART(HOUR, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) AS [HOUR],
(DATEPART(MINUTE, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) AS [MIN],
(DATEPART(SECOND, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) AS [FROMSECOND]

FROM tblTransaction
WHERE TL_Timestamp BETWEEN  DATEADD(HOUR,-1, GETDATE())  AND GETDATE()
AND TL_IsAccepted = 1
GROUP BY 
(DATEPART(HOUR, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))),
(DATEPART(MINUTE, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))),
(DATEPART(SECOND, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp)))
ORDER BY 
(DATEPART(HOUR, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) DESC,
(DATEPART(MINUTE, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) DESC,
(DATEPART(SECOND, DATEADD(SECOND, -(DATEPART(SECOND, TL_Timestamp)) % 10, TL_Timestamp))) DESC

这项工作正常，但如果整个生产过程没有发生10秒钟，则不予考虑。我希望它为零有什么想法吗？

Answer 1

您可以创建一个包含所有时间戳组（预填充和固定）的表，并将其作为连接中的第一个表（另一个在左连接中）。

EG。（在你的情况下，它们应该是360条记录，即一小时，或一整天8640）

ID   MIN SEC  
1    00 10  
2    00 20  
3    00 30

... 如果你称之为TL_TIME_DIVISION

SELECT TL_TIME_DIVISION.HOUR, TL_TIME_DIVISION.MIN, TL_TIME_DIVISION.SEC, COALESCE (PRODUCTION,0)  AS PRODUCTION
FROM TL_TIME_DIVISION   
LEFT JOIN **your query** ON **use Hour, min e sec**

生产计数每10秒分组一次

1 个答案: