MySQL: week()函数和yearweek()函数 查询本周过生日的学生

– 47、查询本周过生日的学生
select * from student where WEEK( DATE_FORMAT( NOW(), ‘%Y%m%d’) ) = WEEK( s_birth );

select * from student where YEARWEEK(s_birth) = YEARWEEK(DATE_FORMAT( NOW(), ‘%Y%m%d’));

select WEEK(DATE_FORMAT(NOW(),’%Y%m%d’));

SELECT NOW();
– 2020-11-13 17:54:50

– 测试week

SELECT WEEK(‘2020-11-13’);
– 第45周

SELECT WEEK(‘2020-11-18’);
– 第46周

– 测试YEARWEEK

SELECT YEARWEEK(‘2020-11-13’);
– 202045

SELECT YEARWEEK(‘1998-11-13’);
– 199845

SELECT YEARWEEK(‘2020-11-18’);
– 202046