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Re: PARTITION BY RANGE ,problem for NULL values
Posted by: soumen chowdhury
Date: January 19, 2011 11:59PM

soumen chowdhury Wrote:
-------------------------------------------------------
> Structure of my table.
>
> CREATE TABLE `link_click` (
> `uid` char(255) NOT NULL,
> `lid` char(255) NOT NULL,
> `ip_address` char(15) NOT NULL,
> `user_agent` char(255) DEFAULT NULL,
> `open_date` timestamp NOT NULL DEFAULT
> CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
> `referrer` char(255) DEFAULT NULL,
> `environ` text,
> `country` char(255) NOT NULL,
> KEY `lid` (`lid`),
> KEY `country` (`country`),
> KEY `open_date` (`open_date`)
> ) ENGINE=MyISAM DEFAULT CHARSET=latin1 ;
>
> While tring to partition on open_date,
>
> ALTER TABLE link_click
> PARTITION BY RANGE (to_days(open_date))
> (
> PARTITION p0 VALUES LESS THAN
> (to_days('0000-00-00')),
> PARTITION p1 VALUES LESS THAN
> (to_days('2009-03-31')),
> PARTITION p2 VALUES LESS THAN
> (to_days('2009-04-30')),
> PARTITION p3 VALUES LESS THAN
> (to_days('2009-05-31')),
> PARTITION p4 VALUES LESS THAN
> (to_days('2009-06-30')),
> PARTITION p5 VALUES LESS THAN
> (to_days('2009-07-31')),
> PARTITION p6 VALUES LESS THAN
> (to_days('2009-08-31')),
> PARTITION p7 VALUES LESS THAN
> (to_days('2009-09-30')),
> PARTITION p8 VALUES LESS THAN
> (to_days('2009-10-31')),
> PARTITION p9 VALUES LESS THAN
> (to_days('2009-11-30')),
> PARTITION p10 VALUES LESS THAN
> (to_days('2009-12-31')),
> PARTITION p11 VALUES LESS THAN
> (to_days('2010-01-31')),
> PARTITION p12 VALUES LESS THAN
> (to_days('2010-02-28')),
> PARTITION p13 VALUES LESS THAN
> (to_days('2010-03-31')),
> PARTITION p14 VALUES LESS THAN
> (to_days('2010-04-30')),
> PARTITION p15 VALUES LESS THAN
> (to_days('2010-05-31')),
> PARTITION p16 VALUES LESS THAN
> (to_days('2010-06-30')),
> PARTITION p17 VALUES LESS THAN
> (to_days('2010-07-31')),
> PARTITION p18 VALUES LESS THAN
> (to_days('2010-08-31')),
> PARTITION p19 VALUES LESS THAN
> (to_days('2010-09-30')),
> PARTITION p20 VALUES LESS THAN
> (to_days('2010-10-31')),
> PARTITION p21 VALUES LESS THAN
> (to_days('2010-11-31')),
> PARTITION p22 VALUES LESS THAN
> (to_days('2010-12-31')),
> PARTITION p23 VALUES LESS THAN
> (to_days('2011-01-31')),
> PARTITION p24 VALUES LESS THAN
> (to_days('2011-02-28')),
> PARTITION p25 VALUES LESS THAN
> (to_days('2011-03-31')),
> PARTITION p26 VALUES LESS THAN
> (to_days('2011-04-30')),
> PARTITION p27 VALUES LESS THAN
> (to_days('2011-05-31')),
> PARTITION p28 VALUES LESS THAN
> (to_days('2011-06-30')),
> PARTITION p29 VALUES LESS THAN
> (to_days('2011-07-31')),
> PARTITION p30 VALUES LESS THAN
> (to_days('2011-08-31')),
> PARTITION p31 VALUES LESS THAN
> (to_days('2011-09-30')),
> PARTITION p32 VALUES LESS THAN
> (to_days('2011-10-31')),
> PARTITION p33 VALUES LESS THAN
> (to_days('2011-11-31')),
> PARTITION p34 VALUES LESS THAN
> (to_days('2011-12-31')),
> PARTITION p35 VALUES LESS THAN MAXVALUE
> );
>
> is giving error
>
> ERROR 1566 (HY000): Not allowed to use NULL value
> in VALUES LESS THAN


i am using mysql version 5.5.8

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Re: PARTITION BY RANGE ,problem for NULL values
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January 19, 2011 11:59PM


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