oracle中not or 用法

 Select * from emp where not (sal > 3000 or sal < 1500);

       寻找那些工资既不大于3000也不小于1500,也即在1500到3000范围的员工,相当于:select * from emp where sal between 1500 and 3000;

注:http://www.cnblogs.com/dongxiaoguang/archive/2013/03/18/2966647.html

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转载自blog.csdn.net/l_degege/article/details/86007073