Questão 2560085

select *

from t1, t2 where t1.a=t2.a

select t1.*, t2.*

from t1 inner join t2 on t1.a=t2.a.a

select t1.*, t2.*

from t1, t2

where t1.a in t2.a and t2.a in t1.a

select t1.*, t2.*

from t1, (select * from t2) t2

where t2.a=t1.a

select * from (select *

from t1) x, (select * from t2) y

where x.a=y.a