下面是我的表结构,150k记录
CREATE TABLE `employees` (
`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL,
`city` varchar(255) DEFAULT NULL,
`emailid` varchar(255) DEFAULT NULL,
`join_date` date NOT NULL DEFAULT '0000-00-00',
PRIMARY KEY (`id`,`join_date`)
) ENGINE=InnoDB
我使用的是mysql版本:5.5.41
数据报告:
+------------+-----------+
| join_date | count |
+------------+-----------+
| 2015-05-01 | 100 |
| 2015-05-02 | 100 |
| 2015-05-03 | 100 |
| 2015-05-04 | 100 |
| 2015-05-05 | 100 |
| 2015-05-06 | 100 |
| 2015-05-07 | 67900 |
| 2015-05-08 | 30622 |
| 2015-05-09 | 10455 |
| 2015-05-10 | 40393 |
+------------+-----------+
当我尝试执行以下命令时
Alter Table employees PARTITION by RANGE (TO_DAYS(join_date))
( PARTITION p1 values less than (TO_DAYS('2015-05-07')));
我收到以下错误:表没有值736090的分区。即使我有600条记录低于值2015-05-07
我做错了什么。
答案 0 :(得分:3)
不确定,但我认为你应该尝试:
ALTER TABLE employees PARTITION BY RANGE (TO_DAYS(join_date)) (
PARTITION p1 values LESS THAN(TO_DAYS('2015-05-07')),
PARTITION p2 VALUES LESS THAN(MAXVALUE)
);