When should you use ORDER BY clause?

The ORDER BY clause in MySQL is used to sort the result set of a query based on one or more columns. It is particularly useful when you want to organize your data in a meaningful way, making it easier to analyze and present to end-users.

You should use the ORDER BY clause when:

You want to display data in a specific order, such as ascending or descending.
You need to sort data based on user preferences or requirements.
You are generating reports that require ordered data for better readability.
You want to facilitate searching and filtering by showing the most relevant results at the top.

Example:


        <?php
        // Database connection
        $conn = new mysqli("localhost", "username", "password", "database");

        // Check connection
        if ($conn->connect_error) {
            die("Connection failed: " . $conn->connect_error);
        }

        // SQL query with ORDER BY
        $sql = "SELECT name, age FROM users ORDER BY age DESC";
        $result = $conn->query($sql);

        if ($result->num_rows > 0) {
            while($row = $result->fetch_assoc()) {
                echo "Name: " . $row["name"]. " - Age: " . $row["age"]. "<br>";
            }
        } else {
            echo "0 results";
        }
        $conn->close();
        ?>

When should you use ORDER BY clause?

Example:

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When should you use ORDER BY clause?

Example:

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