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phpmysqlduplicatesrow

PHP MySQL Copy a row within the same table... with a Primary and Unique key

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?

Solution

  • 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.