自定义日期范围

Question

解释

有2个工作班次，白班=从07:00:00到19:00:00和夜班=从19:00:00到07:00:00

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样本数据

Name    Date        Time        WorkShift
John    2015-09-14  19:14:24    N
John    2015-09-14  23:43:27    N
John    2015-09-15  03:21:36    N
John    2015-09-15  11:29:48    D

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期望的结果

例如，我有 @dateStart = 2015-09-14 和 @dateEnd = 2015-09-14 变量。我需要从2015-09-14 19:00:00 到2015-09-15 07:00:00 中选择记录如下：

John    2015-09-14  19:14:24    N
John    2015-09-14  23:43:27    N
John    2015-09-15  03:21:36    N

如你所见，这里是日期2015-09-15，但Time是03:21:36所以应该选择它（因为时间低于07:00:00，N工作班次）。

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问题

我的查询按预期选择，但有 2 个问题。

如果我通过 @dateStart = 2015-09-15 和 @dateEnd = 2015-09-15 它选择：

John    2015-09-15  03:21:36    N -- this shouldn't be selected again, this should go as 2015-09-14 
John    2015-09-15  11:29:48    D 

另一个问题是，如果我有这样的记录

John    2015-09-15  03:21:36    N

如您所见，2015-09-14 中没有 John 的任何记录，所以当我在以下传递变量时应该选择它：@dateStart = 2015-09-15 和 @dateEnd = 2015-09-15

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查询

select *
from SampleTable
where /* Some conditions.... and*/
      (convert(date, StartTime) >= @dateStart) and
      (case when (DateCreated between cast(cast(cast(DateCreated as date) as varchar(40)) + ' 19:00:00' as datetime) 
                              and cast(cast(cast(DateCreated as date) as varchar(40)) + ' 23:59:59' as datetime)
                  or
                  DateCreated between cast(cast(cast(DateCreated as date) as varchar(40)) + ' 00:00:00' as datetime) 
                              and cast(cast(cast(DateCreated as date) as varchar(40)) + ' 07:00:00' as datetime)
                  )
                  and Workshift like '%N'
            then dateadd(day,-1,cast(cast(DateCreated as date) as varchar(40))) 
            else DateCreated
        end <= @dateEnd)

如果有什么不清楚的地方，可以问我，我会尽力解释。

Answer 1

在开始和结束时间上增加小时怎么样？

where datetime >= dateadd(hour, 19, @datestart) and
      datetime < dateadd(hour, 7, @dateend)

如果您将“日期”和“时间”分别存储在不同的列中（一般不推荐），您可以在转换为datetime后添加它们：

where cast(date as datetime) + cast(time as datetime) >= dateadd(hour, 19, @datestart) and
      cast(date as datetime) + cast(time as datetime) < dateadd(hour, 7, @dateend)

Answer 2

试试这个

select  *
from SampleTable
where convert(dateTime,DateCreated) + convert(dateTime,StartTime) 
between DATEADD(HH,7, @dateStart) and DATEADD(HH,24+7, @dateEnd)
or 
(
    convert(dateTime,DateCreated) + convert(dateTime,StartTime) 
    between DATEADD(HH,00, @dateStart) and DATEADD(HH,7, @dateStart) -- Morning records
    and not exists 
        (
        select 1 from SampleTable where 
        convert(dateTime,DateCreated) + convert(dateTime,StartTime)  
        between DATEADD(HH,7-24, @dateStart) and DATEADD(HH,0, @dateStart)
        ) -- Data from previous day
)