I tried to create a table with range partitioning. But it shows the following error:
A primary must include all columns in the table's partitioning location.
This is my SQL statement:
CREATE TABLE `tbl_emp_confirmation` ( `fld_id` int(11) NOT NULL AUTO_INCREMENT, `fldemp_id` varchar(100) DEFAULT NULL, `fldempname` varchar(100) DEFAULT NULL, `fldjoindate` varchar(100) DEFAULT NULL, `fldconfirmdate` Date NOT NULL, `fldresigndate` varchar(100) DEFAULT NULL, `fldstatus` varchar(50) DEFAULT NULL, `fldcon_status` varchar(100) DEFAULT NULL, UNIQUE KEY `fld_id` (`fld_id`), KEY `in_empconfirmation` (`fldemp_id`,`fldempname`,`fldjoindate`,`fldconfirmdate`) ) PARTITION BY RANGE ( Month(fldconfirmdate)) (PARTITION p_JAN VALUES LESS THAN (TO_DAYS('2011-01-01')), PARTITION p_FEB VALUES LESS THAN (TO_DAYS('2011-02-01')), PARTITION p_MAR VALUES LESS THAN (TO_DAYS('2011-03-01')), PARTITION p_APR VALUES LESS THAN (TO_DAYS('2011-04-01')), PARTITION p_MAY VALUES LESS THAN (TO_DAYS('2011-05-01')), PARTITION p_MAX VALUES LESS THAN MAXVALUE );
You are partitioning data using fldconfirmdate, which is part of your PK, but not a part of your UNIQUE KEY fld_id.
This is extracted from the MySQL manual:
In other words, every unique key on the table must use every column in the table's partitioning expression.
CREATE TABLE `tbl_emp_confirmation` ( `fld_id` int(11) NOT NULL AUTO_INCREMENT, `fldemp_id` varchar(100) DEFAULT NULL, `fldempname` varchar(100) DEFAULT NULL, `fldjoindate` varchar(100) DEFAULT NULL, `fldconfirmdate` Date NOT NULL, `fldresigndate` varchar(100) DEFAULT NULL, `fldstatus` varchar(50) DEFAULT NULL, `fldcon_status` varchar(100) DEFAULT NULL, UNIQUE KEY `fld_id` (`fld_id`, `fldconfirmdate`), KEY `in_empconfirmation` (`fldemp_id`,`fldempname`,`fldjoindate`,`fldconfirmdate`) ) PARTITION BY RANGE ( Month(fldconfirmdate)) (PARTITION p_JAN VALUES LESS THAN (TO_DAYS('2011-01-01')), PARTITION p_FEB VALUES LESS THAN (TO_DAYS('2011-02-01')), PARTITION p_MAR VALUES LESS THAN (TO_DAYS('2011-03-01')), PARTITION p_APR VALUES LESS THAN (TO_DAYS('2011-04-01')), PARTITION p_MAY VALUES LESS THAN (TO_DAYS('2011-05-01')), PARTITION p_MAX VALUES LESS THAN MAXVALUE );
