Mysql学习总结（57）——MySQL查询当天、本周、本月、上周、本周、上月、距离当前现在6个月数据

建表语句如下：CREATE TABLE `order` (  `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,  `order_name` VARCHAR(45) NOT NULL,  `order_time` DATETIME NOT NULL,  PRIMARY KEY (`id`))下面根据 order_time 字段来查询各个时间段内的所有记录。1，查询当天（今天）的数据SELECT * FROM `order` WHERE TO_DAYS(order_time) = TO_DAYS(NOW())2，查询昨天的数据SELECT * FROM `order` WHERE TO_DAYS(NOW()) - TO_DAYS(order_time) = 13，查询最近7天的数据（包括今天一共7天）SELECT * FROM `order` where DATE_SUB(CURDATE(), INTERVAL 7 DAY) < date(order_time)4，查询最近30天的数据（包括今天一共30天）SELECT * FROM `order` where DATE_SUB(CURDATE(), INTERVAL 30 DAY) < date(order_time)5，查询当月（本月）的数据SELECT * FROM `order` WHERE DATE_FORMAT(order_time, '%Y%m') = DATE_FORMAT(CURDATE(), '%Y%m')6，查询上个月的数据SELECT * FROM `order` WHERE PERIOD_DIFF(DATE_FORMAT(NOW(),'%Y%m'), DATE_FORMAT(order_time,'%Y%m')) =17，查询本季度的数据SELECT * FROM `order` WHERE QUARTER(order_time)=QUARTER(NOW())8，查询上季度的数据SELECT * FROM `order` WHERE QUARTER(order_time)=QUARTER(DATE_SUB(NOW(),INTERVAL 1 QUARTER))9，查询当年（今年）的数据SELECT * FROM `order` WHERE YEAR(order_time)=YEAR(NOW())10，查询去年的数据SELECT * FROM `order` WHERE YEAR(order_time)=YEAR(DATE_SUB(NOW(),INTERVAL 1 YEAR))