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mysqlclone
Freddie
Freddie

Reputation: 741

Clone MySQL Row plus new unique ID

I am able to clone a row in my table with the following code:

$uuid = 'blahblah';    
INSERT INTO events (title, subtitle) SELECT title, subtitle FROM events WHERE uuid = '$uuid'

However, I want to generate a new unique ID for the newly cloned row. The name of this table column is "uuid" How do I insert a new unique ID during the cloning process? I have an auto index columnt of type INT but I also have a unique ID column of type VARCHAR for each row (mixed alpha numeric).

Thanks in advance.

Upvotes: 2

Views: 18069

Answers (2)

ioedu
ioedu

Reputation: 47

/*
eduardoaf.com
https://github.com/eacevedof/
*/
DELIMITER $$

DROP PROCEDURE IF EXISTS `prc_clone_row`$$

CREATE PROCEDURE `prc_clone_row`(
    sTableName VARCHAR(25)
    ,sId VARCHAR(5)
    )
BEGIN
    SET @sSQL := CONCAT('SELECT (MAX(id)+1) AS idnew FROM ',sTableName,' INTO @sIdNew');
    PREPARE sExecute FROM @sSQL;
    EXECUTE sExecute;

    IF (@sIdNew IS NOT NULL) THEN
        SET @sSQL := CONCAT('CREATE TEMPORARY TABLE tempo_table SELECT * FROM ',sTableName,' WHERE id = ',sId,'; ');
        PREPARE sExecute FROM @sSQL;
        EXECUTE sExecute; 

        SET @sSQL := CONCAT('UPDATE tempo_table SET id=',@sIdNew,' WHERE id=',sId,'; ');
        PREPARE sExecute FROM @sSQL;
        EXECUTE sExecute;        

        SET @sSQL := CONCAT('INSERT INTO ',sTableName,' SELECT * FROM tempo_table WHERE id=',@sIdNew,'; ');
        PREPARE sExecute FROM @sSQL;
        EXECUTE sExecute; 

        SET @sSQL := CONCAT('SELECT * FROM ',sTableName,' ORDER BY id DESC;');
        PREPARE sExecute FROM @sSQL;
        EXECUTE sExecute;   
    ELSE
        SELECT CONCAT('TABLE ',sTableName,' IS EMPTY!!!') AS msg;
    END IF;

END$$

DELIMITER ;

CALL prc_clone_row('app_cms_content','1');

Upvotes: 0

Freddie
Freddie

Reputation: 741

I found the answer here - PHP MySQL Copy a row within the same table... with a Primary and Unique key

Basically, select everything except the ID and as long as the primary key is set to auto increment - shouldn't be a problem.

Upvotes: 3

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