in和not in

7.在WHERE中使用in和not in条件

字段 in (值1,值2,值3...):字段值在指定的集合元素中

//查询10,20,30,40这些部门的员工信息

select empno,ename

from emp

where deptno=10 or deptno=20

or deptno=30 or deptno=40;

//采用in实现

select empno,ename,deptno

from emp

where deptno in (10,20,30,40);

//查询10,20,30,40部门之外的员工信息

select empno,ename,deptno

from emp

where deptno not in (10,20,30,40);

//查询MANAGER和ANALYST职位的员工信息

select empno,ename,job

from emp

where job in (‘MANAGER‘,‘ANALYST‘);