Question

I am getting the current system time with the following query

select cast(DATEPART(hh,getdate()) as varchar)+ ':'+ cast(DATEPART(n,getdate()) as varchar)

Now how do I compare this current system time with a time field to see which is larger?

 -----------------------
 declare    @time1  datetime,
            @time2  datetime

 select  @time1 = '20060701 02:27:35.35',
         @time2 = getdate()

 select tm1, tm2,
        case    
         when tm1 = tm2 then 'tm1 = tm2' 
         when tm1 > tm2 then 'tm1 > tm2'
    else        'tm1 < tm2'
    end as [TimeDiff]
 from
 (
     select dateadd(day, -datediff(day, 0, @time1), @time1) as tm1,
            dateadd(day, -datediff(day, 0, @time2), @time2) as tm2
 ) t

 -----------------------

The time field has time in the following format

     0400
     0415
     0430

I see this supporting Function. Now how do I alter the @time1 part to “select time from table”

Thanks

Answer 1

try this:

select case when cast(cast(DATEPART(hh,getdate()) as varchar)+ ':'+ cast(DATEPART(n,getdate()) as varchar) as datetime) >
       cast(left('0415',2)+':'+right('0415',2) as datetime) then 'greter' else 'lesser'
       end