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insert into sales_reps(id,name,salary,commission_pct) select employee_id,last_name,salary,commission_pct
from employees where job_id like '%rep';
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update employees set job_id = (select job_id from employees where employee_id = 205),
salary = (select salary from employees where employee_id = 205)
where employee_id = 114;
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update employees set job_id = (select job_id from employees where employee_id = 205),
salary = (select salary from employees where employee_id = 205)
where employee_id = 114
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µÚ1 ²½ Ê×ÏȲéѯ 108 ËùÔÚ²¿ÃŵÄ×î¸ß¹¤×ÊÊǶàÉÙ
select max(salary) from employees where department_id =
( select department_id from employees where employee_id = 108)
µÚ 2 ²½ ²éѯ¹«Ë¾ÖÐÆ½¾ù¹¤×Ê×îµÍµÄ job_id
select job_id from employees group by job_id having avg(salary) =
(select min(avg_sal) from(select avg(salary) avg_sal from employees group by job_id) )
µÚ 3 ²½ ʵÏÖ¸üÐÂ
update employees set salary = ( select max(salary) from employees
where department_id =
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