Show the location codes with at least 3 documents.
CREATE TABLE Document_locations (location_code VARCHAR)
SELECT location_code FROM Document_locations GROUP BY location_code HAVING COUNT(*) >= 3
### Context: CREATE TABLE Document_locations (location_code VARCHAR) ### Question: Show the location codes with at least 3 documents. ### Answer: SELECT location_code FROM Document_locations GROUP BY location_code HAVING COUNT(*) >= 3