-- Query 24

SELECT
    consommation.numcons,
    consommation.libcons,
    (
        SELECT COUNT(comprend.numfacture)
        FROM comprend
        WHERE comprend.numcons = consommation.numcons
    ) AS `nb factures`
FROM consommation
HAVING `nb factures` >= 2;

/* == RESULT ==
"NUMCONS","LIBCONS","Nb factures"
100,"Café",10
101,"Café double",13
102,"Café crème",11
105,"Chocolat",5
106,"Bière pression",6
107,"Bière 25 Cl",5
108,"Bière 33 Cl",13
110,"Bière 50 Cl",3
122,"Perrier",7
124,"Orangina",8
130,"Coca Cola",6
*/