多选题
以下是产品(PRODUCT)表和供应商(SUPPLIER)表的结构: PRODUCT ----------- PRODUCT_ID NUMBER PRODUCT_NAME VARCHAR2(25) SUPPLIER_ID NUMBER CATEGORY_ID NUMBER QTY_PER_UNIT NUMBER UNIT_PRICE NUMBER(7, 2) QTY_IN_STOCK NUMBER QTY_ON_ORDER NUMBER REORDER_LEVEL NUMBER SUPPLIER ------------ SUPPLIER_ID NUMBER SUPPLIER_NAME VARCHAR2(25) ADDRESS VARCHAR2(30) CITY VARCHAR2(25) REGION VARCHAR2(10) POSTAL_CODE VARCHAR2(11) 要求创建一个查询,这个查询将以字母顺序返回产品的清单,其中包括了每个产品的供应商。要求只有在产品表中有供应商的那些产品才可以包括在清单(报告)中。请问使用以下的哪两个查询能完成此项查询? A.SELECT p.product_name, s.supplier_name FROM product p LEFT OUTER JOIN supplier s ON p.supplier_id=s.supplier_id ORDER BY p.product_name; B.SELECT p.product_name, s.supplier_name FROM product P JOIN supplier s ON (supplier_id) ORDER BY p.product_name; C.SELECT p.product_name, s.supplier_name FROM product p NATURAL JOIN supplier s ORDER BY p.product_name; D.SELECT p.product_name, s.supplier_name FROM product p JOIN supplier s USING (p.supplier_id) ORDER BY p.product_name; E.SELECT product_name, supplier_name FROM product JOIN supplier USING (supplier_id) ORDER BY p.product_name;