Hint: - group_concat - group by - having count(*)>1
Cheers Claudio 2011/5/18 Mimi Cafe <mimic...@googlemail.com> > Hi > > I am trying to retrieve record from 2 tables (book and author), but my > problem is how to retrieve all the names of authors where more than one > author wrote a book. > > Here is what i have: it works OK, except that it returns more than one row > for books that have more than one author. > > select concat(fname,' ',initial,' ',lname) from author inner join > book_author on fkauthor_id = pkauthor_id inner join book on fkisbn = > pkisbn; > > Any idea who can formulate my query to retrieve the books with with names > of > all the authors concatenated in one? > > > Mimi > -- Claudio
