Question

我有一个查询将一些新记录插入表中，myTbl来自临时表myTblTemp。

在查询中，如果日期是星期六或星期日，我会调整其中一个字段'AnnDate'。但是，如果日期是银行假日，我还需要调整AnnDate。

我有一张桌子，tblBankHoliday列出了所有需要的银行假期。如果在tblBankHoliday中找到AnnDate，如何调整我的查询（或者我是否需要单独的查询），这将增加一天的日期？

我当前的查询

insert into myTbl(AnnDate, USDVal)
case DATENAME(WEEKDAY, AnnDate) 
       when 'Saturday' 
       then DATEADD(DD, 2, AnnDate) 
       when 'Sunday' 
       then DATEADD(DD, 1, AnnDate) 
       else AnnDate 
end
from myTblTemp

Answer 1

制作一张表格，例如thedays。插入相关期间的所有日期。例如在theday列中。在另一栏例如isworkday标记工作日，其中1个非工作日为0。

然后，您可以在查询中的某一天或之后选择下一个工作日。

insert into myTbl(AnnDate, USDVal)
(SELECT min(theday)
        FROM thedays
        WHERE theday >= AnnDate
              AND theday.isworkday = 1)
...
from myTblTemp

Answer 2

Sticky bit的答案对你的情况更好。

您可以使用递归CTE在无效日期之间循环，并持续增加1天，直到您的验证完成。

;WITH PatchedDates AS
(
    SELECT
        InitialAnnDate = C.AnnDate,
        CorrectedAnnDate = C.AnnDate,
        USDVal = C.USDVal,
        IsDateOK = CASE 
            WHEN 
                EXISTS (SELECT 1 FROM tblBankHoliday AS X WHERE X.BankHoliday = C.AnnDate) OR 
                DATENAME(WEEKDAY, C.AnnDate) IN ('Saturday', 'Sunday') THEN 'No' 
            ELSE 'Yes' END
    from 
        myTblTemp AS C
        LEFT JOIN tblBankHoliday AS T ON C.AnnDate = T.BankHoliday

    UNION ALL

    SELECT
        InitialAnnDate = C.InitialAnnDate,
        CorrectedAnnDate = DATEADD(DAY, 1, C.CorrectedAnnDate),
        USDVal = C.USDVal,
        IsDateOK = CASE 
            WHEN 
                EXISTS (SELECT 1 FROM tblBankHoliday AS X WHERE X.BankHoliday = DATEADD(DAY, 1, C.CorrectedAnnDate)) OR 
                DATENAME(WEEKDAY, DATEADD(DAY, 1, C.CorrectedAnnDate)) IN ('Saturday', 'Sunday') THEN 'No' 
            ELSE 'Yes' END
    FROM
        PatchedDates AS C
    WHERE
        C.IsDateOK = 'No'
)
insert into myTbl(
    AnnDate, 
    USDVal)
SELECT
    AnnDate = C.CorrectedAnnDate,
    USDVal = C.USDVal
FROM
    PatchedDates AS C
WHERE
    C.IsDateOK = 'Yes'

如果日期属于周末或银行假日，则调整日期

2 个答案: