I have a table I created, how do I make a form for a user to filter the data?

I have created a table, I now need to filter the data from that table when someone selects options from a form.

Whats a good way to do that?

Here is the html:

<form name="filter" action="<?php echo str_replace( '%7E', '~', $_SERVER['REQUEST_URI']); ?>" method="post">
    <input type="hidden" name="filter_submit" value="Y">
        <select name="your_filter" class="input">
            <option value="none">nothing selected</option>
            <option value="b">b</option>
            <option value="c">c</option>                                                    
        </select>
    <input type="submit" name="submit" class="input" value="Filter" />
    </form>

Here is the php to filter data:

function filter() {
global $wpdb;
$table_name = $wpdb->prefix . "your_table_listings";
$sql = $wpdb->get_results("SELECT * FROM $table_name");

if ($_POST['filter_submit'] == 'Y'){
        $your_filter = $_POST['your_filter'];

        if ($your_filter !== 'none'){
                    $add_sql=" yourcolumn = \"' . $your_filter . '\'';  
                    $sql = $wpdb->get_results("SELECT * FROM $table_name WHERE $add_sql");
        }
}
}

Here are some links that might help:

wpdb