Corr. chapt. 5

corrections/chapitre_05/conf.sql

@@ -120,3 +120,143 @@ SELECT C.name, start_date, end_date,
     WHERE C.id_conference = P.id_conference 
 ) AS Speakers
 FROM Conference AS C;
+
+-- 15
+SELECT name, SUM(fees) AS total
+FROM Conference AS C
+LEFT JOIN Participation AS P ON C.id_conference = P.id_conference
+GROUP BY C.id_conference
+ORDER BY total DESC;
+
+-- 16
+SELECT T.title, SUM(IFNULL(fees,0)) AS S
+FROM Topic AS T LEFT JOIN Conference AS C ON T.title = C.title
+LEFT JOIN Participation AS P ON C.id_conference = P.id_conference
+GROUP BY T.title
+HAVING S < 20000;
+
+-- 17
+SELECT S.login, firstname, lastname, COUNT(id_conference)
+FROM Speaker AS S 
+LEFT JOIN Participation AS P ON S.login = P.login
+GROUP BY S.login;
+
+-- 18
+SELECT login, firstname, lastname
+FROM Speaker
+WHERE NOT EXISTS (
+	SELECT *
+    FROM Participation
+    WHERE Participation.login = Speaker.login
+);
+
+SELECT login, firstname, lastname
+FROM Speaker
+WHERE login NOT IN (
+	SELECT login
+    FROM Participation
+);
+
+SELECT Speaker.login, firstname, lastname
+FROM Speaker 
+LEFT JOIN Participation ON Speaker.login = Participation.login
+WHERE Participation.login IS NULL;
+
+SELECT Speaker.login, firstname, lastname
+FROM Speaker 
+LEFT JOIN Participation ON Speaker.login = Participation.login
+GROUP BY Speaker.login
+HAVING COUNT(Participation.id_conference) = 0;
+
+-- 19
+SELECT DISTINCT T.title
+FROM Topic AS T 
+INNER JOIN Conference AS C ON C.title = T.title
+INNER JOIN Participation AS P ON C.id_conference = P.id_conference
+WHERE login LIKE "stregunna14";
+
+-- 20
+SELECT S.login, firstname, lastname, fees
+FROM Speaker AS S 
+INNER JOIN Participation AS P ON S.login = P.login
+WHERE fees = (
+    SELECT MAX(fees) FROM Participation
+);
+
+-- 21
+SELECT S.login, firstname, lastname, SUM(fees) AS F
+FROM Speaker AS S 
+INNER JOIN Participation AS P ON S.login = P.login
+GROUP BY S.login
+HAVING F = (
+    SELECT MAX(S) FROM (
+        SELECT SUM(fees) AS S FROM Participation GROUP BY login
+    ) AS G
+);
+
+WITH GBY (login, firstname, lastname, sum) AS (
+    SELECT S.login, firstname, lastname, SUM(fees) AS F
+    FROM Speaker AS S 
+    INNER JOIN Participation AS P ON S.login = P.login
+    GROUP BY S.login
+)
+SELECT login, firstname, lastname, sum
+FROM GBY
+WHERE sum = (SELECT MAX(sum) FROM GBY);
+
+
+-- 22
+SELECT COUNT(DISTINCT login)
+FROM Participation 
+INNER JOIN Conference USING (id_conference)
+WHERE strftime("%Y", start_date) = "2019";
+
+
+
+
+
+-- 23
+SELECT *
+FROM Visitor
+WHERE login NOT IN (
+  SELECT Visitor.login 
+  FROM Visitor
+  INNER JOIN Registration USING (login)
+  INNER JOIN Conference USING (id_conference)
+  WHERE strftime("%Y", start_date) = "2019"
+);
+
+-- 24
+SELECT substr(A.lastname,1,2) AS SUB, A.firstname, A.lastname, B.firstname, B.lastname 
+FROM Visitor AS A 
+INNER JOIN Visitor AS B ON substr(A.lastname,1,2) = substr(B.lastname,1,2)
+WHERE A.login > B.login
+ORDER BY SUB;
+
+
+
+
+
+-- COMMANDES
+
+-- 1
+INSERT INTO Visitor VALUES ('toto21', 'Di', 'Dju');
+
+-- 2
+INSERT INTO Fidelity VALUES ('toto21', 50);
+
+-- 3
+INSERT INTO Registration 
+SELECT 'toto21', id_conference
+FROM Conference
+WHERE name = 'CurryOn';
+
+-- 4
+UPDATE Fidelity
+SET loyalty_points = loyalty_points * 2;
+
+-- 5
+INSERT INTO Fidelity
+SELECT login, 50
+FROM Visitor 
+WHERE login NOT IN (SELECT login FROM Fidelity);
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