How to Reliably Test the Success of MySQL DELETE Queries?

Testing the Success of MySQL Queries for Database Modifications

To effectively test the success of a MySQL query that modifies database table data, it's crucial to go beyond verifying query preparation. The following code snippet provides a complete solution to this challenge:

if ($cmd == "deleterec") {
    $deleteQuery = "DELETE FROM AUCTIONS1 WHERE ARTICLE_NO = ?";
    if ($delRecord = $con->prepare($deleteQuery)) {
        $delRecord->bind_param("s", $pk);
        $delRecord->execute();

        // Check if any rows were affected by the query
        $affectedRows = $delRecord->affected_rows;

        // Respond accordingly based on the result
        echo ($affectedRows > 0) ? 'true' : 'false';

        $delRecord->close();
    } else {
        echo "false"; // Preparation failed
    }
}

This improved code eliminates the potential issue of relying solely on query preparation by verifying the number of affected rows through $delRecord->affected_rows. If any rows are impacted, it returns "true" to indicate success; otherwise, it returns "false."

Remember, coordinating the result handling with your JavaScript code is crucial to ensure proper feedback to the user or application.

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