Question: Can you give me a list of documents that don't have any images? | Do you want document code? | I'd like both the document code and document name, please.
SQL: SELECT document_name, document_code FROM documents EXCEPT SELECT t1.document_name, t1.document_code FROM documents AS t1 JOIN document_sections AS t2 ON t1.document_code   =   t2.document_code JOIN document_sections_images AS t3 ON t2.section_id   =   t3.section_id