Do we write net ionic equations only when there is a solid in the products? Balanced: Mg (s) +2HCL (aq) --> MgCl_2 (aq) +2H(g) Is it possible to write the net ionic of the formula above? If yes what would it be?

are net ionic formulas possible for non-solids in the product? What if everything in the reactants and products is aqueous, can we write a net ionic? or is it only for when a solid is produced?