[Koha] SQL help please

[Kerrie Stevens]

I have this report that lists all the items in our QLD library but I want to restrict it to items ONLY held in our QLD library and not another branch... I don't know where to put the DISTINCT tag? Please advise:

SELECT items.itemnumber, biblio.title, biblio.author, items.itemcallnumber, items.barcode
FROM items
LEFT JOIN biblio ON (items.biblionumber=biblio.biblionumber)
WHERE items.homebranch='QLD'
ORDER BY items.itemcallnumber

Thanks for your help,

Kerrie Stevens
Harevst Bible College