Re: How to find Brothers and Sisters?

> This view gets the id of the parent for a specific sibling...
> create view as Q_B
> SELECT DISTINCT person.id
> FROM link INNER JOIN person ON link.child = person.id
> WHERE (((person.name)='John'))

To get John's parent's id, shouldn't the query select link.parent instead of person.id?

> This view gets all sibling's for a specific parent id then restricts name ...
> select P2.name from person P2
> inner join link
> on Q_B B
> on P2.parent = B.id
> where P2.name <> 'John'

P2 is an alias for person table, so P2.parent is really person.parent, but the person table doesn't have a parent field (link table does)? Also is joining person and link tables based on Q_B valid? Received on Sun Dec 03 2006 - 20:24:53 CET