An Error Was Encountered

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 ')' at line 5

SELECT distinct location.* FROM (`location`) WHERE location.locationID IN (select locationID from location_zip where zip in (null)) OR location.locationID IN (select locationID from location_city where city in ('')) OR locationID IN (select locationID from location_highlight where itemType = 'organization' and itemID = )