DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user` (
 `userId` bigint(20) NOT NULL,
 `fullName` varchar(64) NOT NULL,
 `userType` varchar(16) NOT NULL,
 `addedTime` datetime NOT NULL,
 PRIMARY KEY (`userId`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `t_user` VALUES ('1', '爽爽', '普通', '2018-01-21 10:20:09');
INSERT INTO `t_user` VALUES ('2', '贵贵', '普通', '2017-11-06 10:20:22');
INSERT INTO `t_user` VALUES ('3', '芬芬', 'vip', '2017-11-13 10:20:42');
INSERT INTO `t_user` VALUES ('4', '思思', 'vip', '2018-01-21 10:20:55');
INSERT INTO `t_user` VALUES ('5', '妍妍', 'vip', '2017-09-17 10:21:28');
-- 今天  
select fullName,addedTime from t_user where to_days(addedTime) <= to_days(now()); 
-- 昨天  
select fullName,addedTime from t_user where to_days(NOW()) - TO_DAYS(addedTime) <= 1;  
-- 近7天  
select fullName,addedTime from t_user where date_sub(CURDATE(),INTERVAL 7 DAY) <= DATE(addedTime);  
-- 近30天  
SELECT fullName,addedTime FROM t_user where DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= date(addedTime);
-- 本月  
SELECT fullName,addedTime FROM t_user WHERE DATE_FORMAT( addedTime, '%Y%m' ) = DATE_FORMAT( CURDATE() , '%Y%m' );
-- 上一月  
SELECT fullName,addedTime FROM t_user WHERE PERIOD_DIFF( date_format( now( ) , '%Y%m' ) , date_format( addedTime, '%Y%m' ) ) =1; 
-- 查询本季度数据  
select fullName,addedTime FROM t_user where QUARTER(addedTime)=QUARTER(now()); 
-- 查询上季度数据  
select fullName,addedTime FROM t_user where QUARTER(addedTime)=QUARTER(DATE_SUB(now(),interval 1 QUARTER));  
-- 查询本年数据  
select fullName,addedTime FROM t_user where YEAR(addedTime)=YEAR(NOW());  
-- 查询上年数据  
select fullName,addedTime FROM t_user where year(addedTime)=year(date_sub(now(),interval 1 year));  
-- 查询距离当前现在6个月的数据  
select fullName,addedTime FROM t_user where addedTime between date_sub(now(),interval 6 month) and now();  
 
-- 查询当前这周的数据  
SELECT fullName,addedTime FROM t_user WHERE YEARWEEK(date_format(addedTime,'%Y-%m-%d')) = YEARWEEK(now());  
-- 查询上周的数据  
SELECT fullName,addedTime FROM t_user WHERE YEARWEEK(date_format(addedTime,'%Y-%m-%d')) = YEARWEEK(now())-1;  
-- 查询上个月的数据   
select fullName,addedTime FROM t_user where date_format(addedTime,'%Y-%m')=date_format(DATE_SUB(curdate(), INTERVAL 1 MONTH),'%Y-%m'); 
-- 查询当前月份的数据
select fullName,addedTime FROM t_user where DATE_FORMAT(addedTime,'%Y%m') = DATE_FORMAT(CURDATE(),'%Y%m');
select fullName,addedTime FROM t_user where date_format(addedTime,'%Y-%m')=date_format(now(),'%Y-%m'); 
-- 查询指定时间段的数据
select fullName,addedTime FROM t_user where addedTime between  '2017-1-1 00:00:00'  and '2018-1-1 00:00:00';   
select fullName,addedTime FROM t_user where addedTime >='2017-1-1 00:00:00'  and addedTime < '2018-1-1 00:00:00'; 
-- 查询当前时间3天前的时间点 select date_sub(now() ,interval 3 day)
-- 查询当前时间的时间3天之后的时间点 select data_sub(now(),interval -3 day)
-- 查询当前时间3个月之前的时间点 select data_sub(now(),interval 3 month)
-- 查询当前时间3个月之后的时间点 select data_sub(now,interval -3 month)