时间:2021-07-01 10:21:17 帮助过:2人阅读
select deptno, job, sum(sal) from emp group by rollup(deptno, job);
break on deptno skip 2;
set pagesize 30;
title col 15 ‘‘ col 35 sql.pno
col deptno heading 部门号
col job heading 职位
col sum(sal) heading 工资总额
break on deptno skip 1
把以上内容保存在e:/oracle/salary.sql
get e:/oracle/salary.sql
@e:/oracle/salary.sql
select deptno, job, sum(sal) from emp group by rollup(deptno, job);
笛卡尔集
等值连接
不等值连接
select e.ename, e.sal, s.grade from emp e, salgrade s where e.sal between s.losal and s.hisal;
外连接
自连接
2016_SQL学习(1)
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