Wait for a while..

Here is the code that you need to put your process into sleep mode:

declare @wait_time nvarchar(255)

print 'start working on it.. => current ms: ' + cast(datepart(millisecond, getdate()) as nvarchar)

set @wait_time = '00:00:00.' + left(cast(cast(rand() * 1000 as int) as nvarchar), 3)
waitfor delay @wait_time

print 'im done and waited for ' + @wait_time
    + ' => current ms: '
    + cast(datepart(millisecond, getdate()) as nvarchar)