mysql两表关联

mysql两表关联

 

是按照范围关联表

select * from
((select u.id,u.name,u.sex,s.street_name,u.street_code,u.birthday from user u join street s on u.street_code=s.street_code) i
INNER JOIN infant_division ind ON DATEDIFF( CURRENT_DATE, i.birthday ) >= ind.min_days
AND DATEDIFF( CURRENT_DATE, i.birthday ) <= ind.max_days )