arthur/ArtStudies
1
0
Fork 0
mirror of https://github.com/ArthurDanjou/ArtStudies.git synced 2026-01-14 13:54:06 +01:00
Code Issues Packages Projects Releases Wiki Activity

Refactor les requêtes SQL pour utiliser des jointures explicites dans les sections Q2.6, Q2.7, Q2.10 et Q2.11

Browse Source
This commit is contained in:
Arthur Danjou
2025-10-02 11:47:38 +02:00
parent 6c120acab3
commit 2022563a28
1 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
M2/SQL/scripts/TP2.sql
View File

@@ -64,14 +64,16 @@ SELECT Enom, Salaire FROM Employe WHERE Salaire < 4000;
-- Q2.6
SELECT 'Q2.6';
SELECT e.Enom, e.Prof FROM Employe e, Departement d
WHERE e.Dep = d.Dno AND d.Ville = 'Lyon';
SELECT e.Enom, e.Prof FROM Employe e
JOIN Departement d ON e.Dep = d.Dno
WHERE d.Ville = 'Lyon';
-- Q2.7
SELECT 'Q2.7';
SELECT Enom, Prof FROM Employe e, Departement d
WHERE d.Directeur = e.Eno AND d.Dnom = 'Production';
SELECT Enom, Prof FROM Employe e
JOIN Departement d ON e.Dep = d.Dno
WHERE d.Dnom = 'Production';
-- Q2.8
SELECT 'Q2.8';
@@ -87,14 +89,14 @@ SELECT * FROM Employe, Departement;
-- Q.2.10
SELECT 'Q2.10';
SELECT e.Enom, d.Dnom FROM Employe e, Departement d
WHERE e.Dep = d.Dno;
SELECT e.Enom, d.Dnom FROM Employe e JOIN Departement d ON e.Dep = d.Dno;
-- Q2.11
SELECT 'Q2.11';
SELECT e.Enom, d.Dnom, dir.Enom AS Directeur FROM Employe e, Departement d, Employe dir
WHERE e.Dep = d.Dno AND d.Directeur = dir.Eno;
SELECT e.Enom, d.Dnom, dir.Enom AS Directeur FROM Employe e
JOIN Departement d ON e.Dep = d.Dno
JOIN Employe dir ON d.Directeur = dir.Eno;
-- Q2.12
SELECT 'Q2.12';