1、

select '2012-03-01'+' 06:00:00'

------解决方案--------------------

探讨


SQL code

problem 1:
select convert(varchar(19),'2012-03-01'+' 06:00:00',120)
problem 2:
select convert(varchar(19),dateadd(dd,1,cast('2012-03-01'+' 06:00:00' as datetime)),120)


------解决方案--------------------

select cast(floor(cast(cast('2012-03-01' as datetime) as float))+0.25 as datetime)
select cast(floor(cast(cast('2012-03-01' as datetime) as float))+1.25 as datetime)