What are the advantages and disadvantages of using joins versus subqueries in this scenario?

In this scenario, the advantages of using joins over subqueries include better performance and readability of the code. Joins allow for more efficient querying of data by combining related tables together. However, subqueries can be useful when dealing with complex filtering conditions or when joining multiple tables is not feasible. 

// Using a join to retrieve data from two related tables
$query = "SELECT users.name, orders.order_date
          FROM users
          JOIN orders ON users.id = orders.user_id
          WHERE users.id = 1";

$result = mysqli_query($conn, $query);

// Fetching and displaying the results
while ($row = mysqli_fetch_assoc($result)) {
    echo "User: " . $row['name'] . " | Order Date: " . $row['order_date'] . "<br>";
}

Keywords

joins subqueries SQL performance optimization

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