feat: lab 12

2026-05-05 11:14:57 +03:00
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+
+MySQL optimization techniques exercise
+
+Дано база даних, у якій є три таблиці: Orders, Products, Activity ( Див.: https://drive.google.com/open?id=18CZPLaV2MaEeMRwURw6cqFKK9MY-wSPx&usp=drive_fs )
+Потрібно оптимізувати декілька запитів
+
+Передумови:
+##################################################
+1. Створіть, якщо не створоно базу даних Lucky_Shrub
+CREATE DATABASE IF NOT EXISTS Lucky_Shrub;
+--------------------------------------------------
+2. Оберіть базу даних Lucky_Shrub
+
+USE Lucky_Shrub;
+--------------------------------------------------
+3. Створіть таблиці бази даних, якщо не створено 3.1 таблцю Orders
+
+CREATE TABLE IF NOT EXISTS Orders (
+    OrderID INT NOT NULL PRIMARY KEY,
+    ClientID VARCHAR(10),
+    ProductID VARCHAR(10),
+    Quantity INT,
+    Cost DECIMAL(6, 2),
+    Date DATE
+);
+--------------------------------------------------
+3.2 Таблицю Products
+
+CREATE TABLE IF NOT EXISTS Products (
+    ProductID VARCHAR(10),
+    ProductName VARCHAR(100),
+    BuyPrice DECIMAL(6, 2),
+    SellPrice DECIMAL(6, 2),
+    NumberOfItems INT
+);
+--------------------------------------------------
+3.3 Таблицю Activity
+
+CREATE TABLE IF NOT EXISTS Activity (
+    ActivityID INT PRIMARY KEY,
+    Properties JSON
+);
+--------------------------------------------------
+4. Заповніть таблиці даними (за потреби оновіть) 4.1 таблцю Orders
+
+INSERT INTO
+    Orders (
+        OrderID,
+        ClientID,
+        ProductID,
+        Quantity,
+        Cost,
+        Date
+    )
+VALUES (
+        1,
+        "Cl1",
+        "P1",
+        10,
+        500,
+        "2020-09-01"
+    ),
+    (
+        2,
+        "Cl2",
+        "P2",
+        5,
+        100,
+        "2020-09-05"
+    ),
+    (
+        3,
+        "Cl3",
+        "P3",
+        20,
+        800,
+        "2020-09-03"
+    ),
+    (
+        4,
+        "Cl4",
+        "P4",
+        15,
+        150,
+        "2020-09-07"
+    ),
+    (
+        5,
+        "Cl3",
+        "P3",
+        10,
+        450,
+        "2020-09-08"
+    ),
+    (
+        6,
+        "Cl2",
+        "P2",
+        5,
+        800,
+        "2020-09-09"
+    ),
+    (
+        7,
+        "Cl1",
+        "P4",
+        22,
+        1200,
+        "2020-09-10"
+    ),
+    (
+        8,
+        "Cl3",
+        "P1",
+        15,
+        150,
+        "2020-09-10"
+    ),
+    (
+        9,
+        "Cl1",
+        "P1",
+        10,
+        500,
+        "2020-09-12"
+    ),
+    (
+        10,
+        "Cl2",
+        "P2",
+        5,
+        100,
+        "2020-09-13"
+    ),
+    (
+        11,
+        "Cl4",
+        "P5",
+        5,
+        100,
+        "2020-09-15"
+    ),
+    (
+        12,
+        "Cl1",
+        "P1",
+        10,
+        500,
+        "2022-09-01"
+    ),
+    (
+        13,
+        "Cl2",
+        "P2",
+        5,
+        100,
+        "2022-09-05"
+    ),
+    (
+        14,
+        "Cl3",
+        "P3",
+        20,
+        800,
+        "2022-09-03"
+    ),
+    (
+        15,
+        "Cl4",
+        "P4",
+        15,
+        150,
+        "2022-09-07"
+    ),
+    (
+        16,
+        "Cl3",
+        "P3",
+        10,
+        450,
+        "2022-09-08"
+    ),
+    (
+        17,
+        "Cl2",
+        "P2",
+        5,
+        800,
+        "2022-09-09"
+    ),
+    (
+        18,
+        "Cl1",
+        "P4",
+        22,
+        1200,
+        "2022-09-10"
+    ),
+    (
+        19,
+        "Cl3",
+        "P1",
+        15,
+        150,
+        "2022-09-10"
+    ),
+    (
+        20,
+        "Cl1",
+        "P1",
+        10,
+        500,
+        "2022-09-12"
+    ),
+    (
+        21,
+        "Cl2",
+        "P2",
+        5,
+        100,
+        "2022-09-13"
+    ),
+    (
+        22,
+        "Cl2",
+        "P1",
+        10,
+        500,
+        "2021-09-01"
+    ),
+    (
+        23,
+        "Cl2",
+        "P2",
+        5,
+        100,
+        "2021-09-05"
+    ),
+    (
+        24,
+        "Cl3",
+        "P3",
+        20,
+        800,
+        "2021-09-03"
+    ),
+    (
+        25,
+        "Cl4",
+        "P4",
+        15,
+        150,
+        "2021-09-07"
+    ),
+    (
+        26,
+        "Cl1",
+        "P3",
+        10,
+        450,
+        "2021-09-08"
+    ),
+    (
+        27,
+        "Cl2",
+        "P1",
+        20,
+        1000,
+        "2022-09-01"
+    ),
+    (
+        28,
+        "Cl2",
+        "P2",
+        10,
+        200,
+        "2022-09-05"
+    ),
+    (
+        29,
+        "Cl3",
+        "P3",
+        20,
+        800,
+        "2021-09-03"
+    );
+--------------------------------------------------
+4.2 таблицію Products
+
+INSERT INTO
+    Products (
+        ProductID,
+        ProductName,
+        BuyPrice,
+        SellPrice,
+        NumberOfItems
+    )
+VALUES (
+        "P1",
+        "Artificial grass bags ",
+        40,
+        50,
+        100
+    ),
+    (
+        "P2",
+        "Wood panels",
+        15,
+        20,
+        250
+    ),
+    (
+        "P6",
+        "Water fountain",
+        65,
+        80,
+        15
+    );
+
+(
+    "P3",
+    "Patio slates",
+    35,
+    40,
+    60
+),
+(
+    "P4",
+    "Sycamore trees ",
+    7,
+    10,
+    50
+),
+(
+    "P5",
+    "Trees and Shrubs",
+    35,
+    50,
+    75
+),
+--------------------------------------------------
+4.3 Таблицю Activity
+
+INSERT INTO
+    Activity (ActivityID, Properties)
+VALUES (
+        1,
+        '{ "ClientID": "Cl1", "ProductID": "P1", "Order": "True" }'
+    ),
+    (
+        2,
+        '{ "ClientID": "Cl2", "ProductID": "P4", "Order": "False" }'
+    ),
+    (
+        3,
+        '{ "ClientID": "Cl5", "ProductID": "P5", "Order": "True" }'
+    );
+--------------------------------------------------
+
+Цілі: 
+Використання загальних табличних виразів 
+Використання підготовлених запитів 
+Використання даних типу JSON