oracle --查询语句

一  查询员工的编号，姓名，职位，月薪，年薪 1 语句 select  empno as "员工编号" , ename "员工姓名" , job as "职位",hiredate 入职时间 , sal as "月薪" ,sal*12 as "年薪"from emp; 2 结果 二 查询员工姓名 ，月薪，年薪 ，年收入 1 语句 select  ename as "姓名" , sal as "月薪"

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