MySQL 查询时间段内的数据

时间：2024-02-25 09:05:50

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。

 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)

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

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\')

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