feat: lab 12

2026-05-05 11:14:57 +03:00
parent fa7c5620a3
commit 9884d8e5af
3 changed files with 564 additions and 0 deletions
@@ -0,0 +1,73 @@
+START TRANSACTION;
+
+INSERT INTO
+    Orders (
+        OrderID,
+        ClientID,
+        ProductID,
+        Quantity,
+        Cost,
+        Date
+    )
+VALUES (
+        32,
+        'C11',
+        'P1',
+        10,
+        500,
+        '2022-09-30'
+    );
+
+UPDATE Products
+SET
+    NumberOfItems = (NumberOfItems - 10)
+WHERE
+    ProductID = 'P1';
+
+SELECT o.OrderID, o.ClientID, o.Quantity, p.ProductID, p.NumberOfItems
+FROM Orders AS o
+    INNER JOIN Products AS p ON o.ProductID = p.ProductID
+WHERE
+    o.OrderID = 32;
+
+select * from Orders;
+
+-- ROLLBACK;
+
+SELECT * FROM Orders WHERE OrderID = 32;
+
+SELECT * FROM Products WHERE ProductID = 'P1';
+
+START TRANSACTION;
+
+INSERT INTO
+    Orders (
+        OrderID,
+        ClientID,
+        ProductID,
+        Quantity,
+        Cost,
+        Date
+    )
+VALUES (
+        30,
+        'Cl1',
+        'P1',
+        10,
+        500,
+        '2022-09-30'
+    );
+
+UPDATE Products
+SET
+    NumberOfItems = (NumberOfItems - 10)
+WHERE
+    ProductID = 'P1';
+
+SELECT o.OrderID, o.ClientID, o.Quantity, p.ProductID, p.NumberOfItems
+FROM Orders AS o
+    INNER JOIN Products AS p ON o.ProductID = p.ProductID
+WHERE
+    o.OrderID = 30;
+
+COMMIT;