mysql partition table use to_days bug
to_days分区表 bug
CREATE TABLE `aaaaaaaaaa` (
`id` int(255) NOT NULL AUTO_INCREMENT,
`year` int(4) NOT NULL,
`month` int(2) NOT NULL,
`day` int(2) NOT NULL,
`startTime` datetime NOT NULL,
`endTime` datetime NOT NULL,
`version` varchar(12) NOT NULL DEFAULT '',
`source` varchar(12) NOT NULL DEFAULT '',
`sid` varchar(12) NOT NULL,
`valid` int(8) NOT NULL,
`error` int(8) NOT NULL,
`total` int(8) NOT NULL,
PRIMARY KEY (`id`,`startTime`,`version`,`source`,`sid`),
KEY `aaaaaaaaaa_index_startTime` (`startTime`),
KEY `aaaaaaaaaa_index_endTime` (`endTime`),
KEY `aaaaaaaaaa_muti_index` (`year`,`month`,`source`),
KEY `aaaaaaaaaa_index_source` (`source`),
KEY `month_index` (`month`),
KEY `year_index` (`year`)
) ENGINE=InnoDB AUTO_INCREMENT=1267666446 DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (to_days(startTime))
(PARTITION p20160405 VALUES LESS THAN (736425) ENGINE = InnoDB,
PARTITION p20160620 VALUES LESS THAN (736501) ENGINE = InnoDB,
PARTITION p20160706 VALUES LESS THAN (736517) ENGINE = InnoDB) */
select sid as sid,source as source,sum(valid) as valid,sum(error) as error from aaaaaaaaaa where startTime>="2016-07-08 10:00:00"
通过下面的方法可以fix
alter table aaaaaaaaaa add PARTITION (partition p_max values less than(maxvalue));
另：
CREATE TABLE `aaaaaaaaaa` (
`id` int(255) NOT NULL AUTO_INCREMENT,
`year` int(4) NOT NULL,
`month` int(2) NOT NULL,
`day` int(2) NOT NULL,
`startTime` datetime NOT NULL,
`endTime` datetime NOT NULL,
`version` varchar(12) NOT NULL DEFAULT '',
`source` varchar(12) NOT NULL DEFAULT '',
`sid` varchar(12) NOT NULL,
`valid` int(8) NOT NULL,
`error` int(8) NOT NULL,
`total` int(8) NOT NULL,
PRIMARY KEY (`id`,`startTime`,`version`,`source`,`sid`)
) ENGINE=InnoDB AUTO_INCREMENT=1267666446 DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (to_days(startTime))
(PARTITION p20160405 VALUES LESS THAN (736425) ENGINE = InnoDB,
PARTITION p20160620 VALUES LESS THAN (736501) ENGINE = InnoDB,
PARTITION p20160706 VALUES LESS THAN (736517) ENGINE = InnoDB) */
这样不会出现上面的问题
但如果把starttime列加上索引 ，就会有这个问题
CREATE TABLE `aaaaaaaaaa` (
`id` int(255) NOT NULL AUTO_INCREMENT,
`year` int(4) NOT NULL,
`month` int(2) NOT NULL,
`day` int(2) NOT NULL,
`startTime` datetime NOT NULL,
`endTime` datetime NOT NULL,
`version` varchar(12) NOT NULL DEFAULT '',
`source` varchar(12) NOT NULL DEFAULT '',
`sid` varchar(12) NOT NULL,
`valid` int(8) NOT NULL,
`error` int(8) NOT NULL,
`total` int(8) NOT NULL,
PRIMARY KEY (`id`,`startTime`,`version`,`source`,`sid`),
KEY `aaaaaaaaaa_index_startTime` (`startTime`)
) ENGINE=InnoDB AUTO_INCREMENT=1267666446 DEFAULT CHARSET=utf8
/*!50100 PARTITION BY RANGE (to_days(startTime))
(PARTITION p20160405 VALUES LESS THAN (736425) ENGINE = InnoDB,
PARTITION p20160620 VALUES LESS THAN (736501) ENGINE = InnoDB,
PARTITION p20160706 VALUES LESS THAN (736517) ENGINE = InnoDB) */
MOS没有找到相关的bug
5.1 5.6 中都没有这个问题，5.5.24中有这个问题
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