存储过程 NULL 值 SQL Server

Question

我有一个存储过程，它从视图中选择数据并根据条件将其插入tempTable。我要做的是确保如果添加日期有 NULL 值，它们会被排除在外。

Insert into tempIntake(Pop, PlanID, PopFull, ApptDate, 1stAppt, Followup, Rn, UserID)
select Pop, PlanID, PopFull, InterviewDate, 1stAppt, Followup, rn, @UserID 
from 
   (Select *, row_number() over (partition by PlanID order BY AddedDate ASC) as rn 
     from VInfo) t
where rn = 1 
and interviewdate >= @fromDate 
and interviewDate <= @toDate

我该怎么做？

我基本上是在尝试按较早的 ADDEDDATE 进行过滤，但排除可能出现的 NULL 日期。

我有这个 SP，而且我还有另一个执行 ADDEDDATE DESC 的存储过程。但我不知道这是否喜欢我只有一次约会的事实。对于 ASC 分区，它提取一个空值，对于 DESC，它提取一个实际日期（只有一个日期）。我希望能够在两个存储过程中使用该日期（除非有多个日期 - 那是我希望它获取最早日期和最晚日期的时间）

Answer 1

除非我遗漏了什么，派生表中的一个简单的 where 子句应该可以解决问题：

Insert into tempIntake(Pop, PlanID, PopFull, ApptDate, 1stAppt, Followup, Rn, UserID)
select Pop,PlanID, PopFull,InterviewDate,1stAppt,Followup, rn, @UserID 
from (
    Select *,row_number() over (partition by PlanID order BY AddedDate ASC) as rn 
    from VInfo
    where AddedDate is not null 
) t
where rn = 1 
and interviewdate >=@fromDate 
and interviewDate <=@toDate

更新

根据我们在 cmets 中的对话，我认为您正在寻找这样的东西：

Insert into tempIntake(Pop, PlanID, PopFull, ApptDate, 1stAppt, Followup, Rn, UserID)
select Pop,PlanID, PopFull,InterviewDate,1stAppt,Followup, rn, @UserID 
from (
    Select *,row_number() over (partition by PlanID order BY AddedDate ASC) as rn 
    from VInfo
    where AddedDate is not null 
) t
where rn = 1 
and interviewdate >=@fromDate 
and interviewDate <=@toDate

union 

select Pop,PlanID, PopFull,InterviewDate,'2016-01-01',Followup, rn, @UserID 
from (
    Select *,row_number() over (partition by PlanID order BY AddedDate ASC) as rn 
    from VInfo t1
    where AddedDate is null 
    and not exists 
    (
        select 1
        from VInfo t
        where AddedDate is not null 
        and interviewdate >=@fromDate 
        and interviewDate <=@toDate
    )
) t
where rn = 1 
and interviewdate >=@fromDate 
and interviewDate <=@toDate