Question

My table has two keys, one is an auto incrementing id (PRIMARY), the other is the name of the item (UNIQUE).

Is it possible to duplicate a row within this same table? I have tried:

INSERT INTO items
SELECT * FROM items WHERE id = '9198'

This gives the error Duplicate entry '9198' for key 'PRIMARY'

I have also tried:

INSERT INTO items
SELECT * FROM items WHERE id = '9198'
ON DUPLICATE KEY UPDATE id=id+1

Which gives the error Column 'id' in field list is ambiguous

And as far as the item name (UNIQUE) field goes, is there a way to append (Copy) to the item name, since this field must also be unique?

Answer 1

Select all columns explicitly, except the id column:

INSERT INTO items
(col1, col2, ..., coln)
SELECT col1, col2, ..., coln
FROM items
WHERE id = '9198'

Your next question will probably be:

Is there a way to do this without listing all the columns explicitly?

Answer: No, I don’t think so.