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我在 mysql 5.1.6* 版本上有一个名为 edr 的表。我已经使用 alter 对表进行了分区 -

ALTER TABLE edr PARTITION BY RANGE (TO_DAYS(eventDate))
 (
   PARTITION apr25 VALUES LESS THAN (TO_DAYS('2014-04-26')),
   PARTITION apr26_30 VALUES LESS THAN (TO_DAYS('2014-05-01')),
   PARTITION may01_05 VALUES LESS THAN (TO_DAYS('2014-05-06')),
   PARTITION may06_10 VALUES LESS THAN (TO_DAYS('2014-05-11')),
   PARTITION may11_15 VALUES LESS THAN (TO_DAYS('2014-05-16')),
   PARTITION may16_20 VALUES LESS THAN (TO_DAYS('2014-05-21')),
   PARTITION may21_25 VALUES LESS THAN (TO_DAYS('2014-05-26')),
   PARTITION may26_31 VALUES LESS THAN (TO_DAYS('2014-06-01')),
   PARTITION june01_05 VALUES LESS THAN (TO_DAYS('2014-06-06')),
   PARTITION june06_10 VALUES LESS THAN (TO_DAYS('2014-06-11')),
   PARTITION june11_15 VALUES LESS THAN (TO_DAYS('2014-06-16')));

现在当我运行任何查询时,例如:

explain partitions select count(*) from edr where eventdate > '2014-05-21';

它给了我分区的输出-apr25,may21_25,may26_31,jun01_05,jun_06_10,jun11_15。在分区 apr25 中,没有此类 where 条件的记录。

请让我知道上述查询中是否有任何问题或其分区问题。

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1 回答 1

1

这是 MySQL 错误:在此处解释。尝试创建包含小于 (0) 的值的第一个分区

小于 (0) 的分区unused值;

于 2015-03-19T11:28:05.233 回答