AVG
Sintassi
AVG([DISTINCT] espr)
Spiegazione
Restituisce la media aritmetica di espr. Con l'opzione DISTINCT si ottiene la media dei valori unici di espr.
AVG() restituisce NULL se non vi sono righe.
Esempi
SELECT nome_studente, AVG(voto_esame) FROM studenti GROUP BY nome_studente;
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
