Hi and Welcome to Madmodder Jon
OUCH that's bad

,,,,,,,,,,, i would stay away from trying to weld it up to repair the table ,, as without pre and post heat treat it will probably just snap in half ,,,,,,me personally i would get hold of some 3/8 plate and cut it to the shape of the table working surface , cut out the slots ,hole in the centre ect and screw it to the table , if you wanted to go all out ,fill any gap left between the two with body filler and a coat of paint

Rob