1.oracle安装时新建表空间的操作是什么?
这个到网上去搜索下多的是.这个也要考,真奇怪。
2.C 错了
修改1:select DeptNo,lastname,sum(Salary) from dept where Salary<5000 group by DeptNo,lastname order by lastname
修改2:select DeptNo,min(lastname) lastname,sum(Salary) from dept where Salary<5000 group by DeptNo order by lastname
这个到网上去搜索下多的是.这个也要考,真奇怪。
2.C 错了
修改1:select DeptNo,lastname,sum(Salary) from dept where Salary<5000 group by DeptNo,lastname order by lastname
修改2:select DeptNo,min(lastname) lastname,sum(Salary) from dept where Salary<5000 group by DeptNo order by lastname
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