今天：select*from table1 where to_days(时间字段名)=to_days(now());

昨天：select*from table1 where to_days(now())-to_days(时间字段名)<=1;

近7天：select*from table1 where date_sub(curdate(),interval 7 day)<=date(时间字段名);

近30天：select*from table1 where date_sub(curdate(),interval 30 day)<=date(时间字段名);

当月：select*from table1 where date_formate(时间字段名,‘%Y%m‘)=date_formate(curdate,‘%Y%m‘);

上月：select*from table1 where period_diff(date_formate(now(),‘%Y%m‘),date_formate(时间字段名,‘%Y%m’))=1.

mysql近几天的查询