--使用子查询
select dname,sum(sal) as dept_total from emp,dept where emp.deptno =dept.deptno group by dname
having sum(sal)>(select sum(sal)*1/3 from emp ,dept where emp.deptno= dept.deptno)
--使用with
with summary as(
select dname,sum(sal) as dept_total from emp,dept where emp.deptno =dept.deptno group by dname
)
select dname,dept_total from summary where dept_total>(select sum(dept_total)*1/3 from summary)
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