mysql 取一條離當前時間最近的記錄
阿新 • • 發佈:2019-02-03
# mysql寫法
SELECT *, ABS(NOW() - startTime) AS diffTime
FROM PolicyShuPrice
ORDER BY diffTime ASC
LIMIT 0, 1
# oracle寫法
SELECT * FROM (
SELECT *, ABS(NOW() - startTime) AS diffTime
FROM PolicyShuPrice
ORDER BY diffTime ASC
) C WHERE rownum=1
附帶表結構
DROP TABLE IF EXISTS `policyshuprice` ;
CREATE TABLE `policyshuprice` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`policySku_id` int(11) DEFAULT NULL,
`startTime` datetime DEFAULT NULL,
`price` decimal(10,4) DEFAULT NULL,
`postFee` decimal(10,4) DEFAULT NULL,
`remarks` varchar(200) DEFAULT NULL,
`needConfirm` tinyint(1) DEFAULT NULL ,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*Data for the table `policyshuprice` */
insert into `policyshuprice`(`id`,`policySku_id`,`startTime`,`price`,`postFee`,`remarks`,`needConfirm`) values (1,1,'2017-08-12 08:30:46','2.5000','1.0000','1',1),(2,2,'2017-08-12 08:50:46','3.5000' ,'1.0000','1',1),(3,3,'2017-08-12 09:30:46','4.6000','1.0000','1',1);
/*Table structure for table `policysku` */
DROP TABLE IF EXISTS `policysku`;
CREATE TABLE `policysku` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`PolicyType` varchar(200) DEFAULT NULL,
`Sku_id` int(11) DEFAULT NULL,
`shop_id` int(11) DEFAULT NULL,
`state` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
/*Data for the table `policysku` */
insert into `policysku`(`id`,`PolicyType`,`Sku_id`,`shop_id`,`state`) values (1,'1',1,3,1),(2,'2',2,3,1),(3,'2',3,2,1);