在视图中,这两个日期来自一个表格:
2014-12-17 14:01:03.523 - 2014-12-20 09:59:28.783
我需要知道几小时内的日期差异,假设在一天中我可以计算上午8点和下午5点的小时数。
当然,周六和周日不得包括在内。
我尝试在select中使用此代码,但我只在几天内获得差异,不包括星期六和星期日。
(DATEDIFF(HOUR, convert(datetime,t.EXT_DATAINS-2), convert(datetime,b.EXT_DATAINS-2)) + 1)
-(DATEDIFF(wk, convert(datetime,t.EXT_DATAINS-2), convert(datetime,b.EXT_DATAINS-2)) * 2)
-(CASE WHEN DATENAME(dw, convert(datetime,t.EXT_DATAINS-2)) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, convert(datetime,b.EXT_DATAINS-2)) = 'Saturday' THEN 1 ELSE 0 END) differenza
示例:
2014-12-17 : 3hrs
2014-12-18 : 8hrs
2014-12-19 : 8hrs
2014-12-20 : 2hrs
Tot : 21hrs
答案 0 :(得分:2)
使用Recursive CTE
获取所有带日期的小时数。
方法1:获取FromDate和ToDate之间的所有日期
DECLARE @FROMDATE DATETIME='2014-12-17 14:01:03.523'
DECLARE @TODATE DATETIME='2014-12-20 09:59:28.783'
;WITH CTE AS
(
SELECT @FROMDATE FROMDATE
UNION ALL
SELECT DATEADD(HH,1,FROMDATE)
FROM CTE
WHERE FROMDATE<@TODATE
)
SELECT ISNULL(CAST(CAST(FROMDATE AS DATE)AS VARCHAR(12)),'Tot')FROMDATE,
CAST(COUNT(FROMDATE)AS VARCHAR(4))+'hrs' [HOURS]
FROM CTE
WHERE DATEPART(HH,FROMDATE) BETWEEN 9 AND 16
AND DATENAME(DW,FROMDATE)<>'SATURDAY' AND DATENAME(DW,FROMDATE)<>'SUNDAY'
GROUP BY CAST(FROMDATE AS DATE)
WITH ROLLUP
方法2:获取FromDate和ToDate之间缺少的日期,其中8为硬编码为
此方法将更具可实施性 - 性能调整
DECLARE @FROMDATE DATETIME='2014-12-17 14:01:03.523'
DECLARE @TODATE DATETIME='2014-12-20 09:59:28.783'
;WITH CTE AS
(
-- Get missing dates between FromDate and ToDate
SELECT DATEADD(DAY,1,@FROMDATE) FROMDATE,8 HRS
UNION ALL
SELECT DATEADD(DAY,1,FROMDATE),8
FROM CTE
WHERE FROMDATE < DATEADD(DAY,-1,@TODATE)
)
,CTE2 AS
(
-- Gets the Hours for FromDate
SELECT CAST(@FROMDATE AS DATE) DATES, CAST(CAST(DATEDIFF
(
MINUTE,@FROMDATE,CAST(CAST(CAST(@FROMDATE AS DATE) AS VARCHAR(12))+' 17:00:00' AS DATETIME)
)AS NUMERIC(18,2))/60 AS DECIMAL(18,0)) HRS
WHERE DATENAME(DW,@FROMDATE)<>'SATURDAY' AND DATENAME(DW,@FROMDATE)<>'SUNDAY'
UNION ALL
-- Select Hours in between dates
SELECT CAST(FROMDATE AS DATE) NEWDATE,HRS
FROM CTE
WHERE DATENAME(DW,FROMDATE)<>'SATURDAY' AND DATENAME(DW,FROMDATE)<>'SUNDAY'
UNION ALL
-- Select Hours for ToDate
SELECT CAST(@TODATE AS DATE), CAST(CAST(DATEDIFF
(
MINUTE,CAST(CAST(CAST(@TODATE AS DATE) AS VARCHAR(12))+' 08:00:00' AS DATETIME),@TODATE
)AS NUMERIC(18,2))/60 AS DECIMAL(18,0))
WHERE DATENAME(DW,@TODATE)<>'SATURDAY' AND DATENAME(DW,@TODATE)<>'SUNDAY'
)
-- Use ROLLUP to find the sum of Hours and show it in last row
SELECT ISNULL(CAST(DATES AS VARCHAR(20)),'Tot')DATES,
CAST(SUM(HRS)AS VARCHAR(4))+'hrs' HRS
FROM CTE2
GROUP BY DATES
WITH ROLLUP
答案 1 :(得分:0)
@marco burrometo
创建一个静态表,它将具有假日功能,星期六和星期日等所有日历功能。它会对你有所帮助。