试题详情
- 单项选择题 Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE Which UPDATE statement is valid?（）
A、UPDATE employees SET first_name = 'John' SET last_name ='Smith' WHERE employee_id = 180;
B、UPDATE employees SET first_name = 'John', SET last_name ='Smith' WHERE employee_id = 180;
C、UPDATE employees SET first_name = 'John' AND last_name ='Smith' WHERE employee_id = 180;
D、UPDATE employees SET first_name = 'John', last_name ='Smith' WHERE employee_id = 180;
- D
关注下方微信公众号，在线模考后查看
热门试题