Question

我需要做以下事情：

    Select ProID from Pros ps where ps.ProId = '102-C01-1299'
    and  ConfirmDate > DATEADD(DAY, (select tt.DaysDue from tblTaskTimeline tt where Task   = 'TaskInfo') as days,ps.ProgStartDate)

注意如何为DATEADD函数，我需要动态获取第二个参数。请注意，tt.DaysDue返回一个整数值。

我收到一条消息，说DATEADD需要3个参数。

Answer 1

为什么不先创建参数？

declare @days int
set @days = (select tt.DaysDue from tblTaskTimeline tt where Task   = 'TaskInfo')

Select ProID 
from Pros ps 
where ps.ProId = '102-C01-1299'
    and  ConfirmDate > DATEADD(DAY, @days, ps.ProgStartDate)

如果您不能使用参数，则以下内容应该有效：

Select ProID 
from Pros ps 
where ps.ProId = '102-C01-1299'
    and  ConfirmDate > DATEADD(DAY, (select tt.DaysDue from tblTaskTimeline tt where Task = 'TaskInfo'), ps.ProgStartDate)

Answer 2

删除“as days”，它应该有效。

sql server DATEADD与DATEADD中的sql

2 个答案: