The experiment shows all the following EXCEPT that .A.the cell phone drivers get less than half of the visual informationB.the cell phone drivers are, twice as likely to hit the front carsC the cell phone driver’S response to sudden dangers is slowerD.the

题目

The experiment shows all the following EXCEPT that .

A.the cell phone drivers get less than half of the visual information

B.the cell phone drivers are, twice as likely to hit the front cars

C the cell phone driver’S response to sudden dangers is slower

D.the 110 drivers were reluctant to take part in the experiment


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    Review the definition of the phone_list view.CHEATE OR REPLACE ALGORITHM=MERGE DEFINER= ‘root‘@localhost‘ SQL SECURITY DEFINER VIEW ‘phone_list‘ AS SELECTe . id as id ‘e . first_name AS ‘first_name‘ ‘e . last_name AS ‘last_name‘ ‘coalesce ( ph1.phone_no, ‘ – ‘) AS ‘office_no‘ ‘coalesce (ph2 .phone_no, ‘ – ‘) AS ‘cell_no‘ FROM employees e LEFT JOIN employee_phone ph1 ON ph1.emp_id = e.id AND ph1.type = ‘office‘ LEFT JOIN employee_phone ph2 ON ph2 .emp_id = e.id AND ph2 .type = ‘mobile‘The tables employees and employee_phone are InnoDB tables;all columns are used in this view. The contents of the phone_list view are as follows: Mysql> select * from phone_list; 1 row in set (0.00 sec)Which method can you use to change the cell_no value to ‘555-8888‘ for John Doe?()

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    参考答案:A

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    try……except;try……except……;try……except……except……else;try……except……else……finally