mysql查询时间段内的数据

时间:2022-02-16 02:58:53

        参照文章( mysql查询时间段内数据)进行了操作。

        先来建表语句:

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for t_user
-- ----------------------------
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;

-- ----------------------------
-- Records of t_user
-- ----------------------------
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');

        下面是sql语句:

-- 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'; 

        归纳一下:

        1、查询时间段内的数据,一般可以用between and 或 <> 来指定时间段。

        2、mysql的时间字段类型有:datetime,timestamp,date,time,year。

        mysql查询时间段内的数据

       3、 获取系统当前时间的函数:

        select CURDATE();
        select NOW();

        4、获取时间差的函数:

        period_diff()    datediff(date1,date2)      timediff(time1,time2)

       5、日期加减函数:

        date_sub() 

        date_add()     adddate()      addtime()

        period_add(P,N)    

        --------以上参考文章(mysql日期加减


        6、时间格式转化函数:

        date_format(date, format) ,MySQL日期格式化函数date_format()
        unix_timestamp() 
        str_to_date(str, format) 
        from_unixtime(unix_timestamp, format) ,MySQL时间戳格式化函数from_unixtime


        --------以上参考文章MYSQL日期 字符串 时间戳互转

        

        顺带写一下oracle的查询语句:

select * from Oracle.alarmLog where alarmtime between to_date('2007-03-03 18:00:00','yyyy-mm-dd hh24:mi:ss') and to_date('2007-09-04 18:00:00','yyyy-mm-dd hh24:mi:ss')


总结:

        时间就像海绵里的水,只要愿挤,总是有的。比如总结mysql中时间段查询方式的时间。o(* ̄︶ ̄*)o  

        用现在的话说,做好时间管理,高效的学习及工作。