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Help on backing up parititions
Posted by: Frwa Onto
Date: April 05, 2013 04:21AM

We have manage to come out with the script to both create and delete partitions as below. We need help on how to backup up those partition before we launch the delete script?

IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.PARTITIONS 
  WHERE TABLE_NAME = 'testPart1' AND PARTITION_NAME = 
  CONCAT(' p'
    ,   DATE_FORMAT( DATE_SUB( CURDATE(), INTERVAL 14 DAY ), '%Y%m%d' ))) THEN  
    SET @stmt := CONCAT(
        'ALTER TABLE testPart1 DROP PARTITION '
    ,   ' p'
    ,   DATE_FORMAT( DATE_SUB( CURDATE(), INTERVAL 14 DAY ), '%Y%m%d' ) 
    );
    PREPARE stmt FROM @stmt;
    EXECUTE stmt;
    DEALLOCATE PREPARE stmt;  
  END IF; 

  IF NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.PARTITIONS 
  WHERE TABLE_NAME = 'testPart1' AND PARTITION_NAME = 
  CONCAT(' p'
    ,   DATE_FORMAT( DATE_ADD( CURDATE(), INTERVAL 2 DAY ), '%Y%m%d' ))) THEN   
  SET @stmt := CONCAT(
        'ALTER TABLE testPart1 ADD PARTITION ('
    ,   'PARTITION p'
    ,   DATE_FORMAT( DATE_ADD( CURDATE(), INTERVAL 2 DAY ), '%Y%m%d' )
    ,   ' VALUES LESS THAN ('
    ,   TO_DAYS( CURDATE() ) + 2 
    ,   '))'
    );
    PREPARE stmt FROM @stmt;
    EXECUTE stmt;
    DEALLOCATE PREPARE stmt; 
  END IF;



Edited 1 time(s). Last edit at 04/05/2013 04:22AM by Frwa Onto.

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