Re: CREATE TABLE with foreign key and primary key

"Paulo Roberto Siqueira" wrote:
>ufgvirtual=# create table matricula (
>ufgvirtual(# id_aluno char(15) references pessoa,
>ufgvirtual(# id_curso int4 references curso_polo,
>ufgvirtual(# id_polo int2 references curso_polo,
>ufgvirtual(# local_prova varchar(50) not null,
>ufgvirtual(# autorizado bool default 'f' not null,
>ufgvirtual(# id_plano_pgto int2 references plano_pgto not null,
>ufgvirtual(# data_matricula date default CURRENT_DATE not null,
>ufgvirtual(# primary key(id_aluno,id_curso,id_polo));

...

>I have tables pessoa, curso, polo, curso_polo and matricula. Primary key in
>curso_polo are id_curso (references curso) and id_polo (references polo). In
>table matricula I want as primary key id_pessoa (references pessoa),
>id_curso (references curso_polo) and id_polo (references curso_polo).

You can't use REFERENCES on a column if the target primary key is made
up of more than one column; you have to use a FOREIGN KEY table
constraint:

create table matricula (
id_aluno char(15) references pessoa,
id_curso int4 not null, -- I assume you want
id_polo int2 not null, -- not null here
local_prova varchar(50) not null,
autorizado bool default 'f' not null,
id_plano_pgto int2 references plano_pgto not null,
data_matricula date default CURRENT_DATE not null,
primary key(id_aluno,id_curso,id_polo),
FOREIGN KEY (id_curso, id_polo
REFERENCES curso_polo (id_curso,id_polo));

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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