UNIX_TIMESTAMP（）的MySQL错误＃1690（BIGINT UNSIGNED值超出范围）

Question

此查询收到错误#1690 - BIGINT UNSIGNED value is out of range：

SELECT * FROM `user`
WHERE ROUND( ( UNIX_TIMESTAMP() - `expire` ) / 86400 ) = 7

我在Stackoverflow中阅读了有关此错误的信息，并查看了有关cast的一些注意事项，但我无法将其应用于此查询。

Answer 1

模式

CREATE TABLE IF NOT EXISTS `user` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `expire` int(10) unsigned NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=3 ;

--
-- Dumping data for table `test`
--
truncate table user;
INSERT INTO `user` (`id`, `expire`) VALUES
(1, 1234567890),
(2, 1923456780),
(3, 1449397282),
(4,1449397282+3600);    -- note this is based on this moment I am writing this about a day ahead

查询

select id,expire,seconds from
(   select id,expire,TIME_TO_SEC(TIMEDIFF(from_unixtime(expire), now())) as seconds 
    from user
) xDerived
where seconds>0 and seconds<604800; -- # of seconds in a week
+----+------------+---------+
| id | expire     | seconds |
+----+------------+---------+
|  4 | 1449400882 |    2870 |
+----+------------+---------+

所有尚未过期的事情，但会在一周之内

Answer 2

表格中的第二个值会给出否定结果，因此您会收到错误。

要在您的案例中使用否定结果，请在查询前使用

SET sql_mode = 'NO_UNSIGNED_SUBTRACTION';