第4章_运算符

芳华梦落 2022-9-17 86 9/17

# 1.选择工资不在5000到12000的员工的姓名和工资

SELECT last_name,salary
FROM employees
WHERE salary < 5000 OR salary > 12000;
SELECT last_name,salary
FROM employees
WHERE salary NOT BETWEEN 5000 AND 12000;

# 2.选择在20或50号部门工作的员工姓名和部门号

SELECT last_name,department_id
FROM employees
WHERE department_id = 20 OR department_id = 50;
SELECT last_name,department_id
FROM employees
WHERE department_id IN (20,50);

# 3.选择公司中没有管理者的员工姓名及job_id

SELECT last_name,job_id
FROM employees
WHERE manager_id IS NULL;

# 4.选择公司中有奖金的员工姓名,工资和奖金级别

SELECT last_name,salary,commission_pct
FROM employees
#WHERE commission_pct IS NOT NULL;
WHERE NOT commission_pct <=> NULL;

# 5.选择员工姓名的第三个字母是a的员工姓名

SELECT last_name
FROM employees
WHERE last_name LIKE '__a%';

# 6.选择姓名中有字母a和k的员工姓名

SELECT last_name
FROM employees
WHERE last_name LIKE '%a%k%' OR last_name LIKE '%k%a%';

# 7.显示出表 employees 表中 first_name 以 'e'结尾的员工信息

SELECT employee_id,first_name,last_name
FROM employees
WHERE first_name LIKE '%e';
SELECT employee_id,first_name,last_name
FROM employees
WHERE first_name REGEXP 'e$';

# 8.显示出表 employees 部门编号在 80-100 之间的姓名、工种

SELECT last_name,job_id
FROM employees
#where department_id in (80,90,100);
WHERE department_id BETWEEN 80 AND 100;

# 9.显示出表 employees 的 manager_id 是 100,101,110 的员工姓名、工资、管理者id

SELECT last_name,salary,manager_id
FROM employees
WHERE manager_id IN (100,101,110)
- THE END -

芳华梦落

10月08日15:52

最后修改:2022年10月8日
0

非特殊说明,本博所有文章均为博主原创。