2017年9月5日
Oracle 多表左连接
摘要： select * from dept1;create table injon asselect d1.deptno as d1no,d1.dname as d1name,d1.loc as d1loc,--查询表dept1的数据 d2.deptno as d2no, d2.dname as d2na 阅读全文
posted @ 2017-09-05 14:25 进击的大黄瓜 阅读(3917) 评论(0) 推荐(0) 编辑