Question

I’m looking for the function that will take rows older then X days and put it in archive table…
Was thinking to make function so it will be easer to execute… something like

CREATE TABLE archive_NUMBER_OF_WEEK (...);
INSERT INTO archive_NUMBER_OF_WEEK SELECT * FROM content WHERE DATE < X days;
DELETE * FROM content WHERE DATE < X days

Will post if I manage to write it by myself 🙂

Answer 1

Ok, I finality wrote it 🙂
It took me a while but here it is:

DELIMITER $$

DROP PROCEDURE IF EXISTS `procedure`.`rotate_events_pro`$$
CREATE DEFINER=`confiq`@`%` PROCEDURE `rotate_events_pro`(p_threshold_rotate_row int,p_days_to_keep int,OUT p_message VARCHAR(200))
BEGIN
    DECLARE v_id_to_move INT;
    #lets take ID that we need to move
    #we can't use variables in LIMIT, how smart MySQL!
    SET @v_sql = CONCAT('SELECT max(id) 
        INTO @v_id_to_move
        FROM events
        WHERE event_created < DATE_ADD(CURDATE(), INTERVAL - ',p_days_to_keep,' DAY) OR 
        id < (SELECT min(id) FROM (SELECT id FROM events ORDER BY id DESC LIMIT ?) as id)');
    PREPARE stmt1 FROM @v_sql;
    SET @param1 = p_threshold_rotate_row;
    EXECUTE stmt1 USING @param1;
        DEALLOCATE PREPARE stmt1;
    #we have IDs that need to to be moved to arhive
    IF @v_id_to_move > 0 THEN
        START TRANSACTION;
            INSERT INTO archived_events SELECT * FROM events WHERE id < @v_id_to_move;
            INSERT INTO archived_eventsinfo SELECT * FROM eventsinfo WHERE event_id < @v_id_to_move;
            DELETE FROM events WHERE id < @v_id_to_move;
            DELETE FROM eventsinfo WHERE event_id < @v_id_to_move;
        COMMIT;
        SET p_message = CONCAT('moved all events that id is < ',@v_id_to_move);
    ELSE
        SET p_message = 'Nothing to move';
    END IF;
END$$

DELIMITER ;

Feel free to feedback or edit it for your own use 🙂