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_pgtoint2 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
(referencescurso_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
wantid_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,
primarykey(id_aluno,id_curso,id_polo), FOREIGN KEY (id_curso, id_polo     REFERENCES curso_polo (id_curso,id_polo));
 
-- 
Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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