查詢30天以內的數據SQL

##查詢30天以內的數據
SELECT *,(TO_DAYS(NOW()) - TO_DAYS(create_time) ) AS d FROM `days_user` WHERE TO_DAYS(NOW()) - TO_DAYS(create_time)  <= 30;

##方法2
SELECT *,DATE_SUB(CURDATE(), INTERVAL 30 DAY),DATE(create_time) FROM days_user WHERE DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= DATE(create_time);

##方法3  比較是否在同一個月份中
SELECT *,DATE_FORMAT( create_time, '%Y%m' ),DATE_FORMAT( CURDATE( ) , '%Y%m' ) FROM days_user WHERE DATE_FORMAT( create_time, '%Y%m' ) = DATE_FORMAT( CURDATE( ) , '%Y%m' )