oracle --查詢語句

一  查詢員工的編號，姓名，職位，月薪，年薪 1 語句 select  empno as "員工編號" , ename "員工姓名" , job as "職位",hiredate 入職時間 , sal as "月薪" ,sal*12 as "年薪"from emp; 2 結果 二 查詢員工姓名 ，月薪，年薪 ，年收入 1 語句 select  ename as "姓名" , sal as "月薪"

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