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  • Day 34 作业(简单的查询)

    作业:
    	1. 查看岗位是teacher的员工姓名、年龄
    	2. 查看岗位是teacher且年龄大于30岁的员工姓名、年龄
    	3. 查看岗位是teacher且薪资在9000-1000范围内的员工姓名、年龄、薪资
    	4. 查看岗位描述不为NULL的员工信息
    	5. 查看岗位是teacher且薪资是10000或9000或30000的员工姓名、年龄、薪资
    	6. 查看岗位是teacher且薪资不是10000或9000或30000的员工姓名、年龄、薪资
    	7. 查看岗位是teacher且名字是jin开头的员工姓名、年薪
    
    //1. 查看岗位是teacher的员工姓名、年龄
    select name, age from staff_info where state = 'teacher'
    //2. 查看岗位是teacher且年龄大于30岁的员工姓名、年龄
    select name, age from staff_info where state = 'teacher' and age > 30
    //3. 查看岗位是teacher且薪资在9000-10000范围内的员工姓名、年龄、薪资
    select name, age, salary from staff_info where state = 'teacher' and salary between 9000 and 10000
    //4. 查看岗位描述不为NULL的员工信息
    select * from staff_info where state_desc is not null
    //5. 查看岗位是teacher且薪资是10000或9000或30000的员工姓名、年龄、薪资
    select name, age, salary from staff_info state = 'teacher' and salary in (10000, 9000, 30000)
    //6. 查看岗位是teacher且薪资不是10000或9000或30000的员工姓名、年龄、薪资
    select name, age, salary from staff_info state = 'teacher' and salary not in (10000, 9000, 30000)
    //7. 查看岗位是teacher且名字是jin开头的员工姓名、年薪
    select name, annual_salary from staff_info where state = 'teacher' and name like 'jin%'
    
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  • 原文地址:https://www.cnblogs.com/2222bai/p/11759334.html
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