In what situations would creating a helper table be a better solution than using PHP to manipulate data for chart display?

Creating a helper table can be a better solution than using PHP to manipulate data for chart display when the data manipulation is complex or resource-intensive. By pre-calculating and storing the manipulated data in a helper table, you can improve performance and reduce the workload on the PHP server.

// Example of creating a helper table in PHP

// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

// Create a helper table to store pre-calculated data for chart display
$sql = "CREATE TABLE helper_table (
    id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    data_column1 INT(6),
    data_column2 INT(6),
    manipulated_data INT(6)
)";

if ($conn->query($sql) === TRUE) {
    echo "Helper table created successfully";
} else {
    echo "Error creating helper table: " . $conn->error;
}

$conn->close();