Hi everyone, I have this table: create table cat( cod integer, cod_super integer, constraint cod_super_fk Foreign Key(cod_super) references cat(cod), constraint cod_pk Primary Key(cod) );
insert into cat values(0, 1); insert into cat values(1, 0); insert into cat values(2, 0); insert into cat values(3, 2); insert into cat values(4, 3); insert into cat values(5, 4); insert into cat values(6, 0); insert into cat values(7, 0); The Query i want to do is: - I want to know all the children´s and subchildrens. Example 1: I want to know the children´s of 0 will return 1, 2, 3, 4, 5, 6, 7 Example 2: I want to know the children´s of 1 will return nothing Example 3: I want to know the children´s of 2 will return 3, 4, 5 Did anyone knows how can i do this query? Thanks a lot :)
