Re: references table(multiple columns go here)

Hi Tomasz,

On Wednesday 18 December 2002 4:46 pm, Tomasz Myrta wrote:
> Hello again
>
> Gary Stainburn wrote:
> > Hi folks,
> >
> > how do I define a referene from 2 columns in 1 table to 2 columns in
> > another.
> >
> > I have:
> >
> > create table ranks (
> > rid         int4 default nextval('ranks_rid_seq'::text) unique not null,
> > rdid        character references depts(did), -- department
> > rrank        int4 not null,        -- departmental rank
> > rdesc        character varying(40)    -- Rank Description
> > );
> >
> >
> >
> >
> > I would now like to define the following table so that inserts can
> > only happen
> > if jdid matches rdid and jrank matches rrank.
> >
> > create table jobtypes (
> > jid         int4 default nextval('jobs_jid_seq'::text) unique not null,
> > jdid        character references ranks(rdid),    -- This joint reference
> > jrank        int4 not null references ranks(rrank),    -- needs sorting
> > jdesc        character varying(40)    -- job description
>
> !!!here!!! ,CONSTRAINT c2 FOREIGN KEY(jid,jdid) REFERENCES ranks (rid,rdid)

Did this come in with 7.2? I get parse error on or near 'FOREIGN'. Note I 
changed the field names to the ones I wanted.  

create table jobtypes (
jid         int4 default nextval('jobs_jid_seq'::text) unique not null,
jdid        character,        -- This joint reference
jrank        int4 not null references ranks(rrank),    -- needs sorting
jdesc        character varying(40),    -- job description
contraint c2 foreign key (jdid,jrank) references ranks (rdid,rrank)
);
ERROR:  parser: parse error at or near "foreign"



>
> > );
>
> that's all
> Tomasz Myrta

-- 
Gary Stainburn
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