Sql题目精选练习

1.每日经典sql

　1.1根据三张关系表查询雇员中工资最高的雇员的员工姓名、工资和部门号。

　salary(工资表)　　　　　　　　employee(员工表)　　　　　　　　department（部门表）

　　　　

Sql语句:　

 1 SELECT
 2     emp.ename as'姓名',
 3     sal.sal as '薪资',
 4     dep.depname as '部门'
 5 FROM
 6     employee AS emp
 7     INNER JOIN salary AS sal
 8     INNER JOIN department dep ON dep.salid = sal.salid 
 9     AND dep.empid = emp.empid 
10     AND sal.sal = ( SELECT max( sal ) FROM salary )

 2.50道Sql题目: