What are the type codes and descriptions for all template types?
SELECT template_type_code ,  template_type_description FROM Ref_template_types
SELECT template_type_code ,  template_type_description FROM Ref_template_types
[{'Template_Type_Code': 'PPT', 'Template_Type_Description': 'Presentation'}, {'Template_Type_Code': 'CV', 'Template_Type_Description': 'CV'}, {'Template_Type_Code': 'AD', 'Template_Type_Description': 'Advertisement'}, {'Template_Type_Code': 'PP', 'Template_Type_Description': 'Paper'}, {'Template_Type_Code': 'BK', 'Template_Type_Description': 'Book'}]