query: SELECT document_type_code ,  document_type_name FROM Ref_document_types
question: Are Listing all a document a type code and a document a type name.
query_toks: SELECT document_type_code , document_type_name FROM Ref_document_types
query_toks_no_value: select document_type_code , document_type_name from ref_document_types
question_toks: Are Listing all a document a type code and a document a type name.