What are the advantages of using a separate column to mark selected rows instead of moving them to a different table in MySQL?

When dealing with selected rows in MySQL, it is often more efficient to use a separate column to mark the selected rows instead of moving them to a different table. This approach allows for easier querying and manipulation of the data without the need to perform complex joins or separate queries. By simply updating a boolean column to mark selected rows, you can easily filter and work with the data as needed. 

// Assuming we have a table called 'items' with a column named 'selected' to mark selected rows
// Update the 'selected' column to mark a row as selected
$selectedItemId = 1;
$query = "UPDATE items SET selected = 1 WHERE id = $selectedItemId";
$result = mysqli_query($connection, $query);

// Retrieve all selected rows
$query = "SELECT * FROM items WHERE selected = 1";
$result = mysqli_query($connection, $query);

// Process the selected rows
while ($row = mysqli_fetch_assoc($result)) {
    // Do something with the selected row
    echo $row['id'] . ' - ' . $row['name'] . '<br>';
}

Keywords

MySQL separate column selected rows advantages PHP

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