MySQL 關於年齡 生日的7道查詢題目

2021-09-02 14:08:26 字數 2078 閱讀 4457

create table student(


s_id varchar(20),


s_name varchar(20) not null default'',


s_birth varchar(20) not null default'',


s_*** varchar(10) not null default'',


primary key(s_id)


);
insert into student values('01' , '趙東' , '1990-01-01' , '男');


insert into student values('02' , '錢明' , '1990-12-21' , '男');


insert into student values('03' , '孫念' , '1990-05-20' , '男');


insert into student values('04' , '李勒' , '1990-08-06' , '男');


insert into student values('05' , '周光' , '1991-12-01' , '女');


insert into student values('06' , '王蘭' , '1992-03-01' , '女');


insert into student values('07' , '孫良' , '1989-07-01' , '女');


insert into student values('08' , '金星' , '1990-01-20' , '女');
查詢各學生的年齡

select *,year(now())-year(s_birth) age from student;
查詢本週過生日的學生

select s_id from student where date_format(s_birth,'%m%d') between date_format('2018-12-03', '%m%d') and date_format('2018-12-09', '%m%d');
查詢下週過生日的學生

select s_id from student where date_format(s_birth,'%m%d') between date_format('2018-12-10', '%m%d') and date_format('2018-12-16', '%m%d');
查詢本月過生日的學生

select * from student where month(s_birth)=month(now());
或者

select s_id from student where date_format(s_birth,'%m')=date_format(now(),'%m')；
查詢下月過生日的學生

select * from student where month(s_birth)=month(now())+1;
或者

select s_id from student where date_format(s_birth,'%m')=date_format(now(),'%m')+1；
查詢最近30天內過生日的同學

select * from student  where dayofyear(now())  - dayofyear(s_birth) between 0 and 30;
查詢當天過生日的學生

select * from student where month(s_birth)=month(now()) and day(s_birth)=day(now());
或者

select s_id from student where date_format(s_birth,'%m%d')=date_format(now(),'%m%d');

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