表: Employee +--------------+---------+ | 列名 | 类型 | +--------------+---------+ | id | int | | name | varchar | | salary | int | | departmentId | int | +--------------+---------+ id是此表的主键列。 departmentId是Department表中ID的外键。 此表的每一行都表示员工的ID、姓名和工资。它还包含他们所在部门的ID。 表: Department +-------------+---------+ | 列名 | 类型 | +-------------+---------+ | id | int | | name | varchar | +-------------+---------+ id是此表的主键列。 此表的每一行都表示一个部门的ID及其名称。 编写SQL查询以查找每个部门中薪资最高的员工。 按 任意顺序 返回结果表。
时间: 2023-08-15 09:15:05 浏览: 103
以下是查询语句:
```
SELECT d.name AS department, e.name AS employee, e.salary
FROM Employee e
JOIN Department d ON e.departmentId = d.id
WHERE e.salary = (
SELECT MAX(salary)
FROM Employee
WHERE departmentId = d.id
);
```
这个查询使用了子查询来查找每个部门中的最高薪资,并且将其与Employee表中的每个员工进行比较,以找到每个部门中薪资最高的员工。最后,它使用JOIN将结果与Department表中的部门名称进行匹配,以获得完整的结果集。
相关问题
SQL架构 Employee 表包含所有员工。Employee 表有三列:员工Id,公司名和薪水。 +-----+------------+--------+ |Id | Company | Salary | +-----+------------+--------+ |1 | A | 2341 | |2 | A | 341 | |3 | A | 15 | |4 | A | 15314 | |5 | A | 451 | |6 | A | 513 | |7 | B | 15 | |8 | B | 13 | |9 | B | 1154 | |10 | B | 1345 | |11 | B | 1221 | |12 | B | 234 | |13 | C | 2345 | |14 | C | 2645 | |15 | C | 2645 | |16 | C | 2652 | |17 | C | 65 | +-----+------------+--------+
请问,如何查询每个公司的最高薪水?
可以使用以下 SQL 语句查询每个公司的最高薪水:
SELECT Company, MAX(Salary) AS MaxSalary
FROM Employee
GROUP BY Company;
结果如下:
Company | MaxSalary
--------|----------
A | 15314
B | 1345
C | 2652
Table: Employee t-- ---- Column Namel Type t-- id name salary managerId --+- int varchar int int - ------+---------- id is the primary key column for this table. Each row of this table indicates the ID of an employee, their name, salary, and the ID of their manager. Write an SQL query to find the employees who earn more than their managers. Return the result table in any order. The query result format is in the following example Example 1: Input: Employee table: +----+-- ---+-- salary | managerId id name +------- 一+-- 1 Joe 70000 2 Henryl 80000 3 Sam 4Max 60000 C 90000 +-- -+- 3 14 Null Null -+ Output: +--- ---+ Employeel +----------+ Joe -- Explanation: Joe is the only employee who earns more than his manager.
你可以使用以下 SQL 查询来找到工资高于他们的经理的雇员:
```sql
SELECT e1.name AS Employee
FROM Employee e1
JOIN Employee e2 ON e1.managerId = e2.id
WHERE e1.salary > e2.salary;
```
这个查询使用了自连接(self join),通过将 `Employee` 表与自身进行连接,将每个雇员与他们的经理进行比较。然后,在 `WHERE` 子句中,筛选出工资高于其经理的雇员。
查询结果将返回一个结果表,其中包含满足条件的雇员的姓名。
希望这个查询能够满足你的需求!如果还有其他问题,请随时提问。
阅读全文