Question

I have been looking for a while now but I can not find an easy solution for my problem. I would like to duplicate a record in a table, but of course, the unique primary key needs to be updated.

I have this query:

INSERT INTO invoices
    SELECT * FROM invoices AS iv WHERE iv.ID=XXXXX
    ON DUPLICATE KEY UPDATE ID = (SELECT MAX(ID)+1 FROM invoices)

the problem is that this just changes the ID of the row instead of copying the row. Does anybody know how to fix this ?

//edit: I would like to do this without typing all the field names because the field names can change over time.

Answer 1

The way that I usually go about it is using a temporary table. It’s probably not computationally efficient but it seems to work ok! Here i am duplicating record 99 in its entirety, creating record 100.

CREATE TEMPORARY TABLE tmp SELECT * FROM invoices WHERE id = 99;

UPDATE tmp SET id=100 WHERE id = 99;

INSERT INTO invoices SELECT * FROM tmp WHERE id = 100;

Hope that works ok for you!