Oracle 简单查询

select * from emp;

select empno,ename,job from emp;

select job from emp;

select DISTINCT empno,job from emp;

select empno,ename,sal*12,sal/30 from emp;

select empno,ename,sal*12+5000 from emp;

select empno,ename,(sal+200)*12+5000 from emp;

select empno 雇员编号,ename 雇员姓名,(sal+200)*12+5000 年薪 from emp;

select empno 雇员编号,ename 雇员姓名,(sal+200)*12+5000 年薪,'￥' 货币 from emp;

select '编号是：'||'的雇员姓名是：'||ename||'，基本工资是：'||sal 雇员信息 from emp;