A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND (eq.classification_id = cl.id OR eq.classification_id' at line 9

SELECT cl.id, cl.url_name as url_name, cl.name FROM dbo_equipment as eq, manufacturers as m, countries as c, dbo_classification as cl WHERE eq.producer_id = m.id AND m.countryId = c.id AND eq.showweb_id = 1 AND eq.image_href != '' AND eq.classification_id in() AND (eq.classification_id = cl.id OR eq.classification_id2 = cl.id OR eq.classification_id3 = cl.id) GROUP BY cl.id