sql - how view result date time datediff dateadd , but out-of-range value -


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i try compare date , start date working master_employee. failed...

if @ line write

select @date = date_start  master_employee  id = '2'  

its succes. hope, can view result in table master_employee.

can me ? thank's much..

declare @date datetime     ,@tmpdate datetime     ,@years int     ,@months int     ,@days int  select @date = date_start master_employee  select @tmpdate = @date  select @years = datediff(yyyy, @tmpdate, getdate()) - case          when (month(@date) > month(getdate()))             or (                 month(@date) = month(getdate())                 , day(@date) > day(getdate())                 )             1         else 0         end  select @tmpdate = dateadd(yyyy, @years, @tmpdate)  select @months = datediff(mm, @tmpdate, getdate()) - case          when day(@date) > day(getdate())             1         else 0         end  select @tmpdate = dateadd(mm, @months, @tmpdate)  select @days = datediff(dd, @tmpdate, getdate())  select @years years     ,@months months     ,@days dayss     ,getdate() date_now 

this give how many days, months, years have passed in aggregate employees, far can tell tying do.

declare @today datetime = convert(date,getdate())  select  sum(datediff(day,isnull(convert(datetime,@date),today),@today)) [days]     ,sum(datediff(month,isnull(convert(datetime,@date),today),@today)) [months]     ,sum(datediff(year,isnull(convert(datetime,@date),today(,@today)) [years] master_employee 

the reason

select @date = date_start master_employee 

is failing because trying assign start dates same variable.

if want separate lines each employee try:

declare @today datetime = convert(date,getdate())  select  id     ,sum(datediff(day,isnull(convert(datetime,@date),today),@today)) [days]     ,sum(datediff(month,isnull(convert(datetime,@date),today),@today)) [months]     ,sum(datediff(year,isnull(convert(datetime,@date),today),@today)) [years] master_employee group id 

be careful, month , year can misleading, if person started 12/31/14 , ran on 1/1/15 see 1 day, 1 month, 1 year. might better off using days , figuring own math how long is...


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