Sql server 仅限TSQL datediff营业时间

在视图中，这两个日期来自一个表：

2014-12-17 14:01:03.523 - 2014-12-20 09:59:28.783

我需要知道以小时为单位的日期差异，假设一天中我可以从上午8点到下午5点计算时间

当然，星期六和星期日不能包括在内

我尝试在select中使用此代码，但我只得到了天数的差异，不包括周六和周日

(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

例如：

2014-12-17 : 3hrs
2014-12-18 : 8hrs
2014-12-19 : 8hrs
2014-12-20 : 2hrs 
Tot        : 21hrs

使用递归CTE获取带有日期的所有小时数

方法1：获取FromDate和ToDate之间小时数的所有日期

方法2：获取FromDate和ToDate之间缺少的日期，其中8硬编码为Hrs

此方法将更易于实现-性能优化

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

@马可·伯罗梅托

---

创建一个静态表，该表将具有所有日历功能，如假日功能，周六和周日是假日。这将对您有很大帮助。

可能与的重复没有标准功能可帮助您完成此操作。除了确定你的工作时间，午餐时间也算吗？在假日计划中，您必须定义范围在营业时间以外开始或结束时会发生什么。例如：如果从下午3点到6点，这是多少小时？上午3点到晚上10点怎么样？你想从这两个日期的差异中得到什么？你能告诉我们你试过什么吗，例如，用于从开始日期到结束日期运行的CTE或数字表，以及用于确定每个日期的小时数和最终结果的总和的案例？这两个日期2014-12-17 14:01:03.523-2014-12-20 09:59:28.783的差异是什么

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