Stored procedure which generates a comma delimited string of UUIDs of related records

gistfile1.sql

BEGIN
	DECLARE `uuid` CHAR(50);
	DECLARE parent CHAR(255);
	DECLARE singular CHAR(255);
	DECLARE source CHAR(255);

	SET `uuid` = (SELECT udf_uuid(guid));
	SET parent = (SELECT udf_type(guid));
	SET singular = (SELECT udf_singular(type));
	SET source = (SELECT CONCAT(type, udf_capitalize(parent), 's'));

	SET @uuids = '';
	SET @stmt = CONCAT("SELECT GROUP_CONCAT(`", singular, "`, ',') INTO @uuids FROM ", source, " WHERE `", parent, "` = '", `uuid`, "'");

	PREPARE tmp FROM @stmt;
	EXECUTE tmp;
	DEALLOCATE PREPARE tmp;

	SET @uuids = (SELECT SUBSTRING(@uuids, 1, LENGTH(@uuids) - 1));

	SELECT @uuids AS `results`;
END