Sql Server 2008 从 DateDiff 中排除公司假期

Question

我有三个表，其中一个是包含公司假期指标的主日历。我想从 DateDiff 计算中排除 Holiday。以下是我的...

警报日期 12/23/16 完成日期 2016 年 12 月 28 日公司假期 12/26/16 需要从 DateDIff 计算中排除

--我的计算显示 3 个工作日应该排除 12/26/16 = 2 个工作日

 DATEDIFF(DD,A.ALERTS_CREATE_DT,S.CreatedDate) 
           -(DATEDIFF(WK,A.ALERTS_CREATE_DT,S.CreatedDate) * 2)  --HOW MANY WEEKEND DAYS PASSED BY
           -(CASE WHEN DATENAME(DW,A.ALERTS_CREATE_DT) = 'Sunday' THEN 1 ELSE 0 END) 
           -(CASE WHEN DATENAME(DW,S.CreatedDate) = 'Saturday' THEN 1 ELSE 0 END) 
           -(CASE WHEN CAL.GRH_HOLIDAY_IND = 'Y' THEN 1 ELSE 0 END) 
           -(  SELECT COUNT(CAL.GRH_HOLIDAY_IND)
               FROM  A
               FULL OUTER JOIN S ON A.ID= S.ID
               INNER JOIN  CAL ON  A.ALERTCREATEDT_MMDDYYYY = CAL.CALENDAR_DATE
               WHERE 1=1
               AND Cal.GRH_HOLIDAY_IND = 'Y' 
               AND CAL.CALENDAR_DATE  between CAST(A.CREATE_DT AS DATE) AND CAST(S.CreatedDate AS DATE) ) AS BusinessDays

试图删除假期是我苦苦挣扎的地方，见下文。

-(  SELECT COUNT(CAL.GRH_HOLIDAY_IND)
               FROM  A
               FULL OUTER JOIN S ON A.ID= S.ID
               INNER JOIN  CAL ON  A.ALERTCREATEDT_MMDDYYYY = CAL.CALENDAR_DATE
               WHERE 1=1
               AND Cal.GRH_HOLIDAY_IND = 'Y' 
               AND CAL.CALENDAR_DATE  between CAST(A.CREATE_DT AS DATE) AND CAST(S.CreatedDate AS DATE

Answer 1

在 2 个案例语句之后，您可以添加以下语句以从假期日历中减去天数 table。

- (select ISNULL(count(1),0) from Cal where Cal.Holiday between ALERTS_CREATE_DT AND CreatedDate )

Sql Server 2008 从 DateDiff 中排除公司假期

Sql Server 2008 Exclude Company Holiday from DateDiff

sql-server-2008

datediff