我试图划分一个表,这是它的结构:Mysql的,不分区工作日期范围
CREATE TABLE IF NOT EXISTS `actions` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`uuid` varchar(36) COLLATE utf8_unicode_ci DEFAULT NULL,
`date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`username` varchar(16) COLLATE utf8_unicode_ci NOT NULL,
`event` varchar(16) COLLATE utf8_unicode_ci NOT NULL,
`obj_id` int(11) unsigned NOT NULL,
`inline` text COLLATE utf8_unicode_ci NOT NULL,
`meta` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
PRIMARY KEY (`id`,`date`),
KEY `event` (`event`),
KEY `obj_id` (`obj_id`),
KEY `username` (`username`),
KEY `date` (`date`),
KEY `user_date` (`username`,`date`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
PARTITION BY RANGE (UNIX_TIMESTAMP(date))
(PARTITION actions_0 VALUES LESS THAN (1209592800) ENGINE = InnoDB, # 2008-05-01
PARTITION actions_images_1 VALUES LESS THAN (1212271200) ENGINE = InnoDB, # 2008-06-01
[...]
PARTITION actions_67 VALUES LESS THAN (1388530800) ENGINE = InnoDB,
PARTITION actions_68 VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
现在
,这似乎是罚款时,我选择了一个特定的日期:
EXPLAIN PARTITIONS SELECT * FROM `actions` WHERE `date` = '2008-05-04 16:13:15' ;
+----+-------------+----------------+------------------
| id | select_type | table | partitions
+----+-------------+----------------+------------------
| 1 | SIMPLE | actions | actions_1
,但如果我这样做查询:
EXPLAIN PARTITIONS SELECT * FROM `actions` WHERE `date` > '2008-05-04 16:13:15' AND `date` < '2008-05-05 16:13:15';
Mysql的扫描所有actions_N表,我究竟做错了什么? 这是我第一次使用分区,但我遵循手册,我无法找到我错误的地方。
谢谢!