Uma forma de obter um produto cartesiano entre as tabelas t

A select * from tb_a CROSS JOIN tb_b on (tb_a.id_a=tb_b.id_a)  B select * from tb_a JOIN tb_b on (tb_a.id_a=tb_b.id_a) C select * from tb_a LEFT JOIN tb_b  D select * from tb_a CART JOIN tb_b  E select * from tb_a, tb_b