List all document type codes and document type names.
CREATE TABLE Ref_document_types (document_type_code VARCHAR, document_type_name VARCHAR)
SELECT document_type_code, document_type_name FROM Ref_document_types
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE Ref_document_types (document_type_code VARCHAR, document_type_name VARCHAR) Question: List all document type codes and document type names. [/INST] SELECT document_type_code, document_type_name FROM Ref_document_types </s>