-- 查詢工資高於豬八戒的員工資訊

select * from emp;

-- 1. 查詢豬八戒的工資
select salary from emp where name = '豬八戒';

-- 2. 查詢工資高於豬八戒的員工資訊
select * from emp where salary > 3600;

select * from emp where salary > (select salary from emp where name = '豬八戒');

-- 查詢 '財務部' 和 '市場部' 所有的員工資訊
-- 查詢 '財務部' 所有的員工資訊

select did from dept where dname = '財務部' or dname = '市場部';

select * from emp where dep_id in (select did from dept where dname = '財務部' or dname = '市場部');

-- 查詢入職日期是 '2011-11-11' 之後的員工資訊和部門資訊
-- 查詢入職日期是 '2011-11-11' 之後的員工資訊

select * from emp where join_date > '2011-11-11' ;


select * from (select * from emp where join_date > '2011-11-11' ) t1, dept where t1.dep_id = dept.did;