update

daten-manipulieren/table-manipulation.sql

@@ -1,6 +1,47 @@
 create table if not exists stores
 (
-    street      varchar(100),
+    street      varchar(100) NOT NULL,
     description text
-)
+);
 
+alter table stores
+    add column name varchar(100);
+
+alter table stores
+    drop column name;
+
+alter table stores
+    add column name varchar(100) first; # Bei MySQL gibt es kein BEFORE, es gibt nur AFTER und FIRST
+
+alter table stores
+    modify column name varchar(100);
+
+alter table stores
+    add column city varchar(100) after street;
+
+alter table stores
+    add column rent decimal(8, 2);
+
+alter table stores
+    add column num_sales int unsigned; # Unsigned (nur positive Zahlen)
+
+INSERT INTO stores (street, city, description, rent, num_sales)
+VALUES ('123 Main St', 'New York', 'Spacious 2-bedroom apartment in the heart of downtown.', 2500.00, 5),
+       ('456 Elm St', 'Los Angeles', 'Modern loft with great city views and natural light.', 3200.50, 3),
+       ('789 Pine Ave', 'Chicago', 'Cozy studio close to public transport and shopping.', 1800.75, 7),
+       ('101 Maple Rd', 'San Francisco', 'Luxury penthouse with rooftop access and premium amenities.', 5500.00, 2),
+       ('202 Oak St', 'Miami', 'Beachfront condo with private balcony and ocean views.', 4200.25, 4);
+
+create table if not exists users
+(
+    id         int primary key auto_increment,
+    email      varchar(100) not null,
+    password   varchar(100) not null,
+    created_at timestamp default current_timestamp
+);
+
+insert into users (email, password)
+values ('test@test.de', '123456');
+
+alter table users
+    add column num_books int not null default 0;