2017-07-24
摘要:
1select * from emp where deptno=30; 2select empno, ename,deptno from emp where JOB='CLERK'; 3select * from emp where comm>sal; 4select * from emp wher 阅读全文
posted @ 2017-07-27 19:19 Java256 阅读(80) 评论(0) 推荐(0) 编辑