OCP 071中文考试题库(cuug内部资料)第4题
OCP 071中文考试题库(cuug内部资料)第4题本套题库是OCP考试中的071(中文版)试题，由CUUG整理，如有报考OCP认证意向，可以联系cuug咨询老师。4、请选择三项。查看PRODUCTS表的说明:Name Null? Type----------------- ------------ ---------------PRODUCT_ID NOT NULL NUMBER(2)PRODUCT_NAME VARCHAR2 (10)UNIT_PRICE NUMBER(3)SURCHARGE VARCHAR2 (2)EXPIRY_DATE DATEDELIVERY_DATE DATE哪三个查询使用的表达式有效?A) SELECT product_id, unit_price, unit_price + surcharge FROM products;B) SELECT product_id, unit_price, 5 "Discount", unit_price + surcharge - discount FROM products;C) SELECT product_id, (unit_price * 0.15 / (4.75 + 552.25)) FROM products;D) SELECT product_id, unit_price || 5 "Discount", unit_price + surcharge - discount FROM products;E) SELECT product_id, expiry_date * 2 FROM products;F) SELECT product_id, (expiry_date - delivery_date) * 2 FROM products;http://www.cuug.com.cn/uploadfile/2021-01/26745023244.jpg
页:
[1]