diff --git a/aharlamcev/postgresql/DMLhomework b/aharlamcev/postgresql/DMLhomework
new file mode 100644
index 0000000..b50c436
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+++ b/aharlamcev/postgresql/DMLhomework
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+select * from users
+
+insert into users (id, name, email, country, created_at)
+values (1, 'Alice', null, 'KZ', '2026-01-17');
+
+insert into users (id, name, email, country, created_at)
+values (2, 'Bob', null, 'USA', '2026-01-17');
+
+insert into users (id, name, email, country, created_at)
+values (3, 'Charlie', null, 'RU', '2026-01-17');
+
+select * from products
+
+insert into products (id, name, category, price, in_stock)
+values (1, 'Mi Band 7', 'smartwatch', 49, true)
+
+insert into products (id, name, category, price, in_stock)
+values (2, 'Surface Pro', 'tablet', 1299, true)
+
+insert into products (id, name, category, price, in_stock)
+values (3, 'Iphone 15', 'smartphone', 999, true)
+
+insert into products (id, name, category, price, in_stock)
+values (4, 'Logitech MX Master', 'mouse', 120, true) 
+
+insert into orders (id, user_id, order_date, status)
+values (1, 1, '2026-01-17', 'in delivery');
+
+insert into orders (id, user_id, order_date, status)
+values (2, 1, '2026-01-17', 'shipped');
+
+insert into orders (id, user_id, order_date, status)
+values (3, 2, '2026-01-17', 'preparing');	
+
+select * from order_items
+
+insert into order_items (order_id, product_id, quantity, price_at_purchase)
+values (1,1, 2, 49)
+
+insert into order_items (order_id, product_id, quantity, price_at_purchase)
+values (1, 2, 1, 1299)
+
+insert into order_items (order_id, product_id, quantity, price_at_purchase)
+values (2, 3, 1, 999)
+
+insert into order_items (order_id, product_id, quantity, price_at_purchase)
+values (3, 4, 2, 120)
+
+insert into order_items (order_id, product_id, quantity, price_at_purchase)
+values (3, 1, 2, 49)
+
+-- Сейчас уже понял, что можно после insert - values добавлять сразу в скобках несколько штук, но изначально делал так.
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