/* 2023-03-11 Allow designating an owner for each tag */
ALTER TABLE `tags` ADD `id_user_owner` INT  NULL  DEFAULT NULL  AFTER `id_asset_thumb`;

/* 2023-03-11 Try to assign tag owners automagically */
UPDATE tags AS t
SET id_user_owner = (
	SELECT id_user
	FROM users AS u
	WHERE LOWER(u.first_name) = LOWER(t.slug) OR
		LOWER(u.first_name) = LOWER(t.tag) OR
		LOWER(u.slug) = LOWER(t.slug) OR
		LOWER(u.slug) = LOWER(t.tag)
	)
WHERE t.kind = 'Person' AND
	(t.id_user_owner = 0 OR t.id_user_owner IS NULL);