[Koha-devel] SQL Query : multiple items

[Paul A]

I'm going round in circles for what I thought would be easy, and will kick 
myself later.

Trying to write a "report" that will give me all biblios with more than 1 item:

SELECT
biblionumber, CONCAT('<a 
href=\"/cgi-bin/koha/catalogue/detail.pl?biblionumber=',biblionumber,'\">',title,'</a>') 
AS Title, author AS Author
FROM biblio b
LEFT JOIN items i USING (biblionumber)
GROUP BY i.ccode
HAVING COUNT(i.itemnumber)>1;

works syntactically, but certainly does not give me the right answers -- it 
produces biblios with 0, 1, 2, etc items, and only 83 total lines when I 
know that there are thousands...

Logic seems to have deserted me. Help please?

As a bonus, I'd appreciate how to add the items.ccode into the report. 
Adding SELECT ccode FROM items either before or after the JOIN fails.

Thanks and br -- Paul