单项选择题
A.SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA\_%' ESCAPE '\';
B.SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA_';
C.SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA_' ESCAPE "\";
D.SELECT employee_id, last_name, job_id FROM employees WHERE job_id = '%SA_';
单项选择题 What does the FORCE option for creating a view do?（）
单项选择题 What is true about updates through a view?（）
单项选择题 Click the Exhibit button and examine the data from the ORDERS and CUSTOMERS tables. Evaluate the SQL statement: SELECT * FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = Smith); What is the result when the query is executed?（）