Serving foul

Is it a foul (do you lose a point) or you need to reserve in the following scenario:
you throw the ball up, you hit it with the bat, but the ball doesn't touch the table, it falls directly on the ground (or in another scenario: the ball flies over the whole table and touches the ground on your opponent's side)

Thanks,
Stefan

Hi Stefan,

As soon as the ball is thrown up it is in play.  So if you don't complete a proper serve after the ball is thrown up you lose the point.