SELECT
	file_hash,
	item_title,
	author_key AS author_id,
	add_timestamp
FROM item_flat
WHERE
	file_hash IN (
		SELECT item_hash
		FROM item_parent
		WHERE parent_hash IN
		(
			SELECT file_hash
			FROM item_flat
			WHERE author_key = ?
		)
	) AND
	author_key != ? AND
	author_key != ?
ORDER BY add_timestamp DESC