Q19 done and tested

insert.sql

@@ -363,6 +363,11 @@ INSERT INTO Projet(titre, acronyme, annee_debut, annee_fin, duree, budget_Laas,
 --                                                                  --
 ----------------------------------------------------------------------
 
+INSERT INTO Participe VALUES (
+    1,
+    5
+);
+
 ----------------------------------------------------------------------
 --                                                                  --
 --                    Preside                                       --

request.sql

@@ -136,7 +136,15 @@ GROUP BY pays
 ORDER BY nb_publi DESC LIMIT 1;
 
 
-
+-- Nathan tested
+SELECT * FROM Scientifique
+WHERE idScientifique IN (
+    SELECT idScientifique FROM (
+        SELECT idScientifique, COUNT(DISTINCT idProjet) AS nbProjets FROM Participe
+        GROUP BY idScientifique
+    ) AS Taux_Participation
+    WHERE nbProjets = 1
+);
 
 
 -- Yasmine QUESTION 19 Testé