MySQL周分区 生成周分区辅助存储过程

按周分区的建表语句如下:

CREATE TABLE `article` (

  `Article_ID` int(11) NOT NULL AUTO_INCREMENT,

  ...

  ...

  `Extracted_Time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,

  KEY `PRIMARYKeyID` (`Article_ID`),

  KEY `AK_Time` (`Extracted_Time`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='文章表'

PARTITION BY RANGE (UNIX_TIMESTAMP(Extracted_Time))

(

  -- 第一个的分区一般是没有数据的, 因为有时候查询某个分区的数据, 会自动去查第一个分区, 为了加快查询速度, 特别设置第一个分区的时间是很久以前的 
  PARTITION P20100101 VALUES LESS THAN (UNIX_TIMESTAMP('2010-01-01 00:00:00')) ENGINE = InnoDB,

  PARTITION P20120923VALUES LESS THAN (UNIX_TIMESTAMP('2012-09-23 00:00:00')) ENGINE = InnoDB,
  PARTITION P20120930VALUES LESS THAN (UNIX_TIMESTAMP('2012-09-30 00:00:00')) ENGINE = InnoDB,
  PARTITION PMaxValueVALUES LESS THAN MAXVALUE ENGINE = InnoDB

);

如果要事先建好未来几年的分区(当然也可以以后用event自动调度存储过程来自动创建分区), 如何去生成分区的语句,
生成结果如:

PARTITION P20120923VALUES LESS THAN (UNIX_TIMESTAMP('2012-09-23 00:00:00')) ENGINE = InnoDB,
PARTITION P20120930VALUES LESS THAN (UNIX_TIMESTAMP('2012-09-30 00:00:00')) ENGINE = InnoDB

...
生成方法如下, 生成的分区语句保存在表temp_generate_partition_unix_time的字段partition_sentence中

drop table temp_generate_partition_unix_time;

create table temp_generate_partition_unix_time(

    id int auto_increment PRIMARY key,

    year_week varchar(10),

    date date,

    unix_time BIGINT,

    partition_sentence varchar(255)

);



CREATE PROCEDURE `sp_generate_partition_unixtime`(week_total_count_in int, begin_date_in varchar(10))

BEGIN

     /***********************************************

              生成周分区数据

      ***********************************************/



     truncate table temp_generate_partition_unix_time;



     set @i=1;

     loop1: WHILE @i<=week_total_count_in DO

         set @date=DATE_ADD(begin_date_in,INTERVAL (@i-1)*7 DAY);

         INSERT into temp_generate_partition_unix_time(year_week,date,unix_time,partition_sentence)

         SELECT YEARWEEK(@date),@date,UNIX_TIMESTAMP(@date),CONCAT('PARTITION P',REPLACE(@date,'-',''),' VALUES LESS THAN (UNIX_TIMESTAMP(''',@date,' 00:00:00'')) ENGINE = InnoDB,');

        set @i=@i+1;

     END WHILE loop1;

END;



call sp_generate_partition_unixtime(180,'2012-09-23');

SELECT * from temp_generate_partition_unix_time;