Add transaction and commit statements to SQL scripts

sql/script_requete.sql

@@ -49,7 +49,7 @@ WITH participants_tournois AS
 	(SELECT idtournoi, COUNT(idtournoi) AS nb 
 	FROM participe 
 	JOIN tournoi USING(idtournoi) 
-		AND YEAR(T.date_deb) >= (YEAR(NOW()) - 3) 
+		WHERE YEAR(date_deb) >= (YEAR(NOW()) - 3) 
 	GROUP BY idtournoi)
 SELECT AVG(nb) AS average FROM participants_tournois;