Remise de l'atelier

La migration et le rollback s'effectuent correctement

database.py

@@ -11,12 +11,12 @@ def __init__(self):
         """
             Chargez les variables d'environnement de votre fichier .env, puis complétez les lignes 15 à 19 afin de récupérer les valeurs de ces variables
         """
-
-        self.host =
-        self.port =
-        self.database =
-        self.user =
-        self.password =
+        load_dotenv()
+        self.host = os.environ.get("HOST")
+        self.port = int(os.environ.get("PORT"))
+        self.database = os.environ.get("DATABASE")
+        self.user = os.environ.get("USER")
+        self.password = os.environ.get("PASSWORD")
 
         self._open_sql_connection()
 

db_scripts/migrate_1.sql

@@ -0,0 +1,25 @@
+CREATE TABLE band (
+    bandName VARCHAR(50),
+    creation YEAR,
+    genre VARCHAR(50),
+    PRIMARY KEY (bandName)
+);
+
+INSERT INTO band (bandName, creation, genre) VALUES
+('Crazy Duo', 2015, 'rock'),
+('Luna', 2009, 'classical'),
+('Mysterio', 2019, 'pop');
+
+ALTER TABLE singer RENAME TO musician;
+ALTER TABLE musician CHANGE singerName musicianName VARCHAR(50);
+ALTER TABLE musician ADD COLUMN role VARCHAR(50);
+ALTER TABLE musician ADD COLUMN bandName VARCHAR(50);
+
+UPDATE musician m SET m.role = 'vocals' WHERE m.musicianName = 'Alina';
+UPDATE musician m SET m.bandName = 'Crazy Duo' WHERE m.musicianName = 'Alina';
+UPDATE musician m SET m.role = 'guitar' WHERE m.musicianName = 'Mysterio';
+UPDATE musician m SET m.bandName = 'Mysterio' WHERE m.musicianName = 'Mysterio';
+UPDATE musician m SET m.role = 'percussion' WHERE m.musicianName = 'Rainbow';
+UPDATE musician m SET m.bandName = 'Crazy Duo' WHERE m.musicianName = 'Rainbow';
+UPDATE musician m SET m.role = 'piano' WHERE m.musicianName = 'Luna';
+UPDATE musician m SET m.bandName = 'Luna' WHERE m.musicianName = 'Luna';

db_scripts/rollback_1.sql

@@ -0,0 +1,6 @@
+DROP TABLE band;
+
+ALTER TABLE musician RENAME TO singer;
+ALTER TABLE singer CHANGE musicianName singerName VARCHAR(50);
+ALTER TABLE singer DROP COLUMN role;
+ALTER TABLE singer DROP COLUMN bandName;