Re: SQL question - duplicate records from join

Hi folks,

I sent the attached email a few days ago, and if anyone can help me
I'd be really appreciative - I'm no SQL guru and this one has me
stumped! If this is the wrong forum for this message please do
redirect me.

--Ray.

On 28 Feb 2002 at 18:46, Raymond O'Donnell wrote:

> I recently upgraded to Postgres 7.1 (having finally found the correct
> pg_dump!), and now I notice that joins are returning duplicate
> records. A typical query would be:
>
>   select i.itemcode, i.itemname, d.deptname, r.roomname
>   from items i
>     inner join departments d on (i.deptcode=d.deptcode)
>     inner join rooms r on (i.roomcode=r.roomcode)
>   where... (etc)
>
> This query returns four copies of each record, where before I just got
> one as I'd expect. Am I doing something wrong here?

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Raymond O'Donnell            http://www.iol.ie/~rod/organ
rod@iol.ie                      The Irish Pipe Organ Page
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